Data Sheet - Digilent Inc.
Contents
1. Reference Manual VX DIGILENT BEYOND THEORY Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 19 of 27 Universal Development Board Reference Manual 69 17 J10 1 RAO RAO TMS 70 38 J10 6 RA1 RA1 TCK 71 60 J10 3 RA4 RA4 TDI 72 61 J10 8 RA5 RA5 TDO 73 91 J10 5 RA6 RA6 74 92 J10 10 RA7 RA7 75 26 J10 7 RB6 RB6 AN6 76 27 J10 12 RB7 RB7 AN7 77 20 J10 9 RB5 RB5 AN5 78 13 J10 14 MCLR MCLR 79 34 J10 11 RB10 RB10 PMPA13 80 35 J10 16 RB11 RB11 PMPA12 81 41 J10 13 RB12 RB12 PMPA11 82 42 J10 18 RB13 RB13 PMPA10 83 43 J10 15 RB14 RB14 PMPA1 84 44 J10 20 RB15 RB15 PMPAO 85 6 J10 17 RC1 RC1 86 7 VJ10 22 RC2 RC2 87 8 J10 19 RC3 RC3 88 9 J10 24 RC4 RC4 89 73 J10 21 RC13 RC13 90 74 J10 26 RC14 RC14 91 N C 92 N C 93 72 J10 25 RDO RDO 94 76 J10 28 RDI RD1 95 77 J10 27 RD2 RD2 96 78 J10 30 RD3 RD3 PMPBE 97 81 J10 29 RD4 RD4 PMPWR 98 82 J10 32 RD5 RD5 PMPRD 99 83 J10 31 RD6 RD6 100 84 J10 34 RD7 RD7 101 68 J10 33 RD8 RD8 102 69 J10 36 RDI RD9 103 70 J10 35 RD10 RD10 PMPCS2 104 71 J10 38 RD11 RD11 PMPCS1 105 790 J10 37 RD12 RD12 Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners 7N BEYOND THEORY JA 10 JA 7 JA 9 JA 8 Page 20 of 27 Universal Development Board Reference Manual A BEYOND THEORY Copyright D2. 1 1 USB Power To power the board with from the USB use a USB 2 0 A to Mini B cable to connect the PC to the UDB via connector J23 The Jumper at J21 power select must be placed in the USB position and the power switch SW1 must be in the ON position When the board is powered the LED at LD8 will be illuminated 1 2 External Power Supply To power the board using an external power supply connected to J20 EXT Supply 5VDC the jumper at J21 Power Select must be placed on the EXT position In order for the board to be powered the switch at SW1 must be in the ON position when the board is powered the LED at LD8 will illuminate If SW1 is in the OFF position the UDB is not powered A fail to power can also occur if the jumper at J21 is in the USB position Connector J20 is a two pin header using 100mil spaced 0 25mil square posts An MTE style connector or clip leads can be used to supply power to this header The proper polarity is marked on the board A Shotkey diode D5 is provided for reverse polarity protection 1 3 Power Supply Circuit Description All on board circuits operate at 3 3V The primary regulated power bus VCC3V3 is powered by a voltage regulator circuit made up of IC9 a Microchip MCP1703 LDO voltage regulator and the associated input and output capacitors C32 C33 and C34 This regulator is rated for a maximum dropout of 625mV To ensure that the regulator output is the proper 3 3V the minimum voltage applied to the input
3. LCD display and OLED graphics displays h bridge and open drain FET modules for controlling motors and solenoids and communications modules such as WiFi and BlueTooth interface modules The Pmod modules can plug directly into the Pmod connector or can be connected via six pin or twelve pin cables Two six pin peripheral modules can be connected to a single 12 pin connector via a twelve pin to dual six pin splitter cable Pmod peripheral modules are powered by the UDB via the interface s power and ground pins There are two 12 pin Pmod connectors on the UDB labeled JA and JB Each Pmod connector provides eight I O signal pins two power pins and two ground pins The signals are arranged so that the connector provides either a single 12 pin interface or two stacked 6 pin interfaces on each Pmod connector The pin numbering that Digilent uses on the 12 pin Pmod connectors is non standard The upper row of pins are numbered 1 6 right to left when viewed from the end of the connector and the lower row of pins are numbered 7 12 right to left This is in keeping with the convention that the upper and lower rows of pins can be considered to be two six pin connectors stacked When viewed from the end of the connector pin 1 is the upper right pin and pin 7 is immediately below it closer to the PCB VCC GND 8 amp 8 signals Figure 2 PMOD connectors Front view The Pmod connectors are wired to locations on the PIM bus They can be accessed dir
4. PIM Bus The PICtail Plus connectors are connected to the PIM Socket what is called the PIM bus There are hard wired connections between the pins of the PIM Socket and the on board PIC32 microcontroller and the pins of the PiCtail Plus connectors It is not necessary to use jumper wires to make connections between PIMs or the on board PIC32 microcontroller and PICtail Plus modules connected to the PICtail connectors The connections between the PIM connector and the PICtail connectors are the same as on a Microchip Explorer 16 board Access to the signals on the PIM bus can be accomplished using the pin header connectors labeled PIM Headers on the board These headers J9 J10 and J11 provide access to all microcontroller signals going between the PIM Socket and the PICtail connectors Connectors J9 and J10 are 40 pin headers and J11 is a 16 pin header These are standard 100mil spaced pin header connectors compatible with MTE style connectors These connectors can be used to monitor the signals between the microcontroller and the peripheral for debugging purposes when using a PIM or the on board PIC32MX360 microcontroller They can also be used to establish connections to the PICtail Plus signals when using a microcontroller in one of the DIP sockets In this case MTE jumper wires would be used to make the connections between the DIP bus and the PIM bus Refer to Appendix A PICtail Plus PIM Bus Connections for a tabl
5. of the regulator should be 4V Allowing for the forward drop across the reverse polarity protection diode D5 in the input circuit the minimum external supply voltage should be 4 4V In addition to the main voltage regulator a second regulator is used to provide power to the USB serial converter circuit This regulator is made up of IC11 a Microchip TC1014 LDO voltage regulator and the associated input and output capacitors C28 and C29 and bypass capacitor C30 This regulator is always powered from the USB connector J23 and therefore power is only supplied to the USB serial converter when J23 is connected to a live USB port 1 4 9V0O Power Supply for PIM PIiCtail Plus Bus Some Microchip PICtail Plus modules require a 9V power supply to power some of their functions There is no 9V power supply on the UDB board If a PiCtail Plus module is being used that requires the 9V power supply an external regulated 9V supply can be attached at J5 to provide this voltage Jumper J5 is an unloaded two pin header in the upper right corner of the board Note the polarity marking on the board as it is not internally protected from reverse polarity Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 5 of 27 Universal Development Board Reference Manual VA BEYOND THEORY 2 USB to UART Serial Converter The MCP2200 is a USB to UART serial converter which ena
6. owners Page 8 of 27 Universal Development Board Reference Manual VA BEYOND THEORY The determination of which PIC devices are compatible with the UDB board and which socket to use is based on the operating voltage range of the microcontroller and the layout of the power ground and MCLR pins on the device The UDB operates the microcontroller at 3 3V and therefore only devices that operate at 3 3V may be used Microchip has several conventions for the placement of the power ground and MCLR pins on their microcontrollers The following describes the way that the sockets are configured The socket at IC2 is designed to accommodate PIC12 PIC16 devices of up to 20 pins On this socket VDD is on pin 1 VSS is on pin 20 and MCLR is on pin 4 Any PIC device that matches this pin assignment will be usable Note that for smaller pin count devices VSS will be on the highest numbered pin e g pin 8 on an 8 pin device The following are some of the devices usable in this socket PIC12F609 PIC12F615 PIC12F617 PIC12F1822 PIC12F1823 PIC16F631 PIC16F677 PIC16F685 PIC16F687 PIC16F689 PIC16F690 The socket at IC4 is designed to accommodate 28 pin PIC16 PIC18 devices This socket is wired with MCLR on pin 1 VSS on pins 8 and 19 and VDD on pin 20 The following are some of the devices usable in this socket PIC16F882 PIC16F883 PIC16F886 PIC16F1933 PIC16F1936 PIC16F1938 PIC18F24J10 PIC18F25J10 PIC18F23K20 PIC18F24K20 PIC18F25K20 PIC18F26
7. 1300 Henley Court D i G f L E N T Pullman WA 99163 509 334 6306 BEYOND THEORY www digilentinc com Universal Development Board Reference Manual Revised January 15 2014 This manual applies to the UDB rev E Table of Contents Table Of CONTENTS aro senc aes sa ptetechsaerecs En A E E Eaa E RSi 1 IOV CE VICW is E E E E 3 1 Power Supply oecon inaa AE E E E EE ONAN E ON E AE EAE 5 Lr U BPOW e A E T EE EA 5 12 External POWER SUD OI senieerereseini eneren nin ir EE ENN ENEAN rE 5 1 3 Power Supply Circuit Description eessseseessseesrresrresrrrsrrrsreesrresrersrerereesreseresreeseeesreeseeeseee 5 1 4 9VO Power Supply for PIM PICtail Plus BUS cccccccccccceeseesecececsssesseeeeseeeeesssueueeeeeeeeess 5 2 USB to UART Serial CONVErter ccscsecscsccscsccscsccecsccccsccccscsccsceccscnccccncescscescscesescncoess 6 UIUC sors cscs aces scenes sees ce tec E 6 3 1 On Board PICS2MX360 ccccccssecccssscccessecccenececeececseeceeseseceseeceseuecessuseesseeceseecessgeeees 7 4 PiCtail Plus Card Edge Expansion Connectors cccsceccccscsccccccscsceccccscnceccccccscececcecces 7 Ae PRIVEO ese ercc as crc E E E E E terse esueretan coer sat tenons E EE EE ene 8 Bi DUP SOCK CUS oricare nan E E A E EEEE E 8 5 1 DIP Bus Program Signal JUMPeTfS esesssesnsesesssessrrssrrssrrssrrsrresrrrsrressressrrsrersrersreesrresrrreeeee 9 32 DIPBO CIOCIU Toran E EEG 9 39 DIP BU FEIC rene E E E E E EE A re eee 10 5AL1 8 amp Pin D
8. 6 pin right angle make header suitable for direct connection of a PICkit 2 or PICkit 3 programming tool Microchip have adapters available for connection of other development tools such as the ICD3 or the ReallCE to this connector part AC164110 6 2 Tag connector The Tag connector J14 is a relatively new programming tool connection standard developed by Microchip It is made up of a land and hole pattern on the board A special header snaps onto the board at this location to make the necessary signal connections Refer to the Microchip web site and Microchip documentation to find the appropriate Tag connector adapter to use with the programming tool being used 6 3 Programming Signals The programming signals used by the ICSP interface are reset MCLR program clock PGC and program data PGD These signals are permanently wired to the PIM socket and to the on board PIC32 microcontroller When using either of these devices no jumper setting is required except that a shorting block must be installed on the PIC32 Enable jumper JP2 when using the on board PIC32MX360 microcontroller or removed when using a PIM Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 11 of 27 Universal Development Board Reference Manual When using any of the DIP sockets it is necessary to jumper the board to select the socket being used Programming j
9. DIP sockets are provided 20 14 8 PIN 8 bit PIC 28 PIN 8 bit PIC and 28 pin PIC24 dsPIC33 PIC32MxX This board also has discrete I O elements and 2 Pmod connectors for further device evaluation or product development capability Expansion connectors are provided that are compatible with the Microchip PICtail Plus line of expansion modules In addition to the PIM connector and DIP sockets a PIC32MX360 microcontroller is also provided for use without the need for additional PIM or DIP socketed processors The Universal Development Board is designed to be compatible with the Microchip Explorer 16 development board The layout of the PIM connector and PICtail Plus bus connections are physically and electrically compatible with the Explorer 16 and many Microchip demonstration programs for the Explorer 16 will work with the UDB e Microchip PIC32MX360 microcontroller e PICTail Bus PIM connector e ICSP Header e 20 14 8 Pin 8 Bit PIC e 28 Pin 8 Bit PIC e 28 Pin PIC24 dsPIC33 PIC32MX e Two Pmod Connectors e Three Push Buttons e Two Analog POTs e Eight user LEDs e USB Serial Convertor e Power from header or USB Convertor e 3 3V operating voltage e 8 MHz Oscillator e Serial EEPROM Universal Development Board Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 3 of 27 Universal Development Board Reference Manual AV BEYOND THEO
10. IP Package crecieron onani E a EAEE EE na 10 542 JAPMDPPiCKki 24 lt n ee T eee ae ener aT 10 Dass PPD IP PC ae Cs oseo E E A a 10 Copyright Digilent Inc All rights reserved DOC 6021 502 000 Other product and company names mentioned may be trademarks of their respective owners Page 1 of 27 Universal Development Board Reference Manual VA BEYOND THEORY lg ZO TAD WAC A Cag atetrce ease can E raucous raeeeneh su scnorsieienastesadenaeceae ete 11 6 In Circuit Serial Programing ICSP ccscsccsccssssceccsccsceccsccsceccsccsceccscescescececcesscescusens 11 OL FCS PCOS COM arree st avextguhuneeant ven recuneanerckebeueraaerenss 11 62 TE CONC CUI savas cae dacs centcscutucosscntenssecnsesecaabaes sees cuemssectsactnsasevessobeas terse ceyseeerseaeeasenness 11 6 3 Programming SignalS ssesessesessscessscecescesescecesoecessecesoscesescessececesoesescecesoesesoesssoesses 11 6 3 1 IC2 Program Jumper SettingsS nsensnnsessessnssrsessessessessessrssrseeseesessessessesressesseseesee 12 6 3 2 IC3 Program Jumper SettingsS nsensnssessessessessssessessessessessesseseesessessessessessessessesse 12 63 5 1C3 6S5 ProgramdJumper Settings sessirsnireissisrerne srs n in n 13 63 4 1C4ProgramJumper Settings cicivrcsarcarcessancevccraieemenevcaiercnassivenmneabessarsaesancabresseeneteuas 13 Z Oscillator CUNO asics ates escent cna T EET 13 TA AM FFCOUCNCY Oscillator siesta seca cues enasscesanncusasvsodbenaenecuestesaes
11. K20 The PIC24J10 and PIC25J10 microcontroller families have an internal voltage regulator for the core operating voltage that requires an external bypass capacitor For these devices a 10uF capacitor must be connected to pin 6 on the microcontroller The UDB board provides this capacitor and jumper JP6 is used to place it in or out of circuit When using a microcontroller in this family or possibly others that have this same requirement install a shorting block onto JP6 These microcontrollers will operate erratically or not at all if this jumper is not installed When using other microcontroller families the shorting block on JP6 should be removed If this shorting block is not removed the 10uF capacitor will load down the I O pin significantly slowing down its operation and possibly stressing the output driver due to excessive current flow when the pin is switching The socket at IC3 is designed to accommodate PIC24 dsPIC33 and PIC32 devices in 28 pin DIP packages The following are examples of PIC devices usable in this socket PIC24FJxxxGA002 family PIC24FJxxxGA102 family PIC24FJxxxGBO004 family dsPIC33FJxxxMC202 family dsPIC33FJxxxMC302 family dsPIC33FJxxxMC802 family dsPIC33FJxxxGP202 family dsPIC33FJxxxGP302 family dsPICFJxxxGP802 family dsPIC33FJO6GS102 dsPICFJO6GS202 dsPICFJ16GS402 dsPICFJ16GS502 any PIC32MX1xx or PIC32MX2xx device 5 1 DIP Bus Program Signal Jumpers Various jumpers must be set appropriately to configure t
12. LR pin The MCLR signal from the programming tool will be connected to the MCLR pin of the on board PIC32 device whenever the shorting block is installed on jumper JP2 If this programming voltage is applied to the board while the shorting block is installed on JP2 the on board PIC32 device will be destroyed This situation can occur in unexpected ways For example the Microchip MPLAB or MPLAB X development environment will automatically cause the programming voltage to be applied when loading a project with a device selected where it is required Thus it is possible to destroy the on board PIC32 device merely by opening a project in the MPLAB development environment As a safety precaution do not leave the shorting block installed on JP2 unless actively using the on board PIC32 device and only when a project known to be safe has been loaded into the IDE 4 PiCtail Plus Card Edge Expansion Connectors The UDB has a PICtail Plus interface that provides the board with basic functionality while still being easily extendable to new technologies as they become available The PICtail Plus interface is compatible with the PiCtail Plus line of expansion modules available from Microchip The PICtail Plus interface is on the right side of the board and labeled PICtail Plus on the board It is made up of card edge socket J12 and edge connector land pattern J13 It is physically and electrically compatible with PiCtail Plus expansi
13. PIM socket and the on board PIC32 microcontroller This makes the oscillator output available as an external clock source for either the microcontroller on a PIM or the on board PIC32MX360 The CLKIN signal can be routed to the appropriate DIP socket by installing a shorting block in the appropriate position on clock select jumper JP7 The CLKIN signal is also available on pin 3 of header J7 Pin3 of J7 can be used to monitor the clock signal for troubleshooting purposes or using a jumper wire the clock signal can be routed to other positions on the board Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 13 of 27 Universal Development Board Reference Manual VA BEYOND THEORY 7 2 Low Frequency Oscillator An unloaded footprint is provided for a 32 768KHzlow frequency oscillator If desired an oscillator such as an Abracon ASVK 32 768ZEC can be loaded at IC1 This is a 3 3V CMOS crystal oscillator in a 7 0x5 0mm package It will provide a low frequency time source that can be used either as a low frequency processor clock or as a time source for a real time clock calendar RTCC peripheral in one of the microcontrollers The IC1 footprint is on the bottom of the board in the lower left corner underneath the area where the user LEDs are located The output of the low frequency oscillator labeled CLK32K appears on pin 14 of header connector J3 along with th
14. RY 1 J21 Power Select Jumper Potentiometer 2 Power Switch 17 PIC 32 Microcontroller MX360 3 Reset Button 18 PIM Header 4 In Circuit Serial Program Connector 19 User I O Buttons 5 SPI EPROM Enable 20 User I O LEDs 6 Programming Jumpers 21 GND Reference 7 PIC32 Current 22 PiCtail Plus Connector 8 USB Serial Converter 23 PIM header 9 USB UART Reset 24 DIP header 10 PIC 32 Enable 25 Programming Jumpers 11 I2C Connector 26 10 14 8 8 Bit PIC 12 GND Reference 27 28 Pin Pic 24 dsPIC33 PIC32 13 PIM Socket 28 28 Pin 8 BIT PIC 14 Pmod Connector 29 DIP current measurment 15 PIM current measurement jumper Si reade E a Soan hane mendanda betr demai oi eir tepee Page 4 of 27 Universal Development Board Reference Manual 4 DIGILENT BEYOND THEORY 1 Power Supply The UDB can be powered in one of two ways either by a bench supply or a wall wart type power supply attached to the power header J20 or from the USB connector J23 associated with the USB serial convertor The UDB is intended to be operated from a regulated 5V power source however with certain restrictions a different supply voltage can be used The absolute maximum voltage that should be applied to the power header is 6V If an external power source other than a regulated 5V supply is used the voltage on the VCC5VO bus will be the voltage of the external supply and the test points on the board labeled 5V will actually be at the voltage of the external supply
15. bles USB connectivity in applications that have a UART interface The serial signals USB RXD USB TXD USB CTS and USB RTS are available at connector J22 to the right of USB connector J23 The signal names are labeled on the board Jumper wires can be used to connect the serial interface signals to locations on either the DIP bus or the PIM bus to allow access to the serial interface from a microcontroller in the PIM socket any of the DIP sockets or the on board PIC32MX360 In order to use the MCP2200 USB serial converter it is necessary for the appropriate drivers to be installed on the host computer The necessary drivers as well as a configuration utility and other support software can be downloaded from the MCP2200 product page on the Microchip web site Jumper JP10 labeled UART USB RESET on the board can be used to hold the MCP2200 in reset Placing a shorting block on JP10 will cause the MCP2200 to be held in reset This can be useful when using a USB port to power the board and the serial interface isn t being used Normally when the USB cable is connected to a PC the MCP2200 will be enumerated on the USB bus and the host computer will expect the MCP2200 driver to be loaded Use of this jumper allows the board to be USB powered without the need for the MCP2200 driver to be installed The MCP2200 also has 256 bytes of integrated user EEPROM There are two LEDs connected to the USB to UART serial converter LD12 which turns on during a tran
16. e showing the correspondences between pin numbers and signal assignments for the PICtail Bus the PIM Bus and the PIM Headers 5 DIP Sockets The UDB has 3 DIP sockets at locations IC2 IC3 and IC4 These sockets are for 20 14 8 pin 8 Bit PIC 28 pin PIC24 dsPIC33 PIC32 and 28 pin 8 Bit PIC devices respectively The board is labeled to reflect this next to each socket The labeling for IC3 doesn t mention PIC32 but the board is fully compatible with PIC32MX devices in DIP packages Generally only one of these sockets should be used at a time as all three DIP sockets are wired in parallel and having multiple devices installed simultaneously will cause conflicts between the I O pins on the various devices The pins from the three DIP sockets are wired in parallel and make up the DIP bus This bus is wired to the DIP Bus header and jumper wires can be used to jumper signals from the DIP bus header to other locations on the board such as the user I O buttons LEDs or to off board devices Although the IC2 socket is a 20 pin socket smaller pin count DIP devices may be used When installing a smaller pin count device such as an 8 pin DIP device into the 20 pin DIP socket load the device such that pin 1 on the microcontroller is inserted into pin 1 on the socket i e the devices are loaded at the upper end of the socket Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective
17. e user I O devices on the board A jumper wire can be used to route this any suitable location on the board To use the low frequency oscillator as a clock input source Remove the oscillator from IC6 use a jumper wire to connect J3 pin 14 CLK32K to J7 pin 3 CLKIN select the appropriate socket using JP7 This applies the 32KHz oscillator output to the external clock input pin on the PIC microcontroller in the selected DIP socket 8 FC Interface The Inter Integrated Circuit IC Interface provides a medium speed 100K or 400K bps synchronous serial communications bus The I C interface provides master and slave operation using either 7 bit or 10 bit device addressing Each device is given a unique address and the protocol provides the ability to address packets to a specific device or to broadcast packets to all devices on the bus Refer to the Microchip for the particular microcontroller used for detailed information on configuring and using the I C interface The UDB provides one I C daisy chain connector J4 This connector is a standard 2x4 pin header connector with 0 100 spaced pins It provides access to the IC signals SCL and SDA plus VCC3V3 and ground The VCC3V3 can be used to power external IC devices This connector provides two positions for connecting to the I C bus By using two wire or four wire MTE cables available separately from Digilent a daisy chain of multiple I C capable devices can be created The I7C bus use
18. ectly from either the microcontroller on a PIM module or the on board PIC32MX360 To use the Pmod connectors from a microcontroller in one of the DIP sockets it is necessary to use jumper wires to make the signal connections from the DIP bus header to the PIM bus headers Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 15 of 27 Universal Development Board Reference Manual DIGILENT j BEYOND THEORY The following tables give the signal locations on the PIM bus headers to which the Pmod connector pins are wired 9 1 Pmod Connector JA PIM Bus Pin Signal JA 1 J9 21 RG9 JA 2 J9 27 RG8 JA 3 J9 23 RG7 JA 4 J9 24 RG6 JA 5 JA 6 JA 7 J10 20 RB15 JA 8 J10 32 RD5 JA 9 J10 29 RD4 JA 10 J10 15 RB14 JA 11 JA 12 9 2 Pmod Connector JB RG9 PMPA2 SS2 RG8 PMPA3 SDO2 RG7 PMPA4 SDI2 RG6 PMPAS SCK2 GND VCC3V3 RB15 PMPAO RD5 PMPRD RD4 PMPWR RB14 PMPA1 GND VCC3V3 PIM Bus Pin Signal JB 1 J10 39 REO JB 2 J11 2 RE1 JB 3 J11 1 RE2 JB 4 J11 4 RE3 JB 5 JB 6 JB 7 J11 3 RE4 JB 8 J11 6 RES JB 9 J11 5 RE6 JB 10 J11 8 REZ JB 11 JB 12 10 Serial EEPROM REO PMPDO RE1 PMPD1 RE2 PMPD2 RE3 PMPD3 GND VCC3V3 RE4 PMPD4 RES5 PMPD5 RE6 PMPD6 RE7 PMPD7 GND VCC3V3 A 25LC256 256K 32K x 8 serial EEPROM IC7 is included for nonvolatile firmware storage It is also used to demonstrate the SPI bus operation Note t
19. er I O devices These devices are not pre wired to any microcontroller pin position and jumper wires are used to attach them to the desired microcontroller pin for the device being used The connection points for these on board I O devices appear on connector J3 Connector J3 also provides access to the VCC3V3 bus and the GND bus for connection to external circuits 11 1 Analog Input Potentiometer There are two 10kQ potentiometers located at R33 and R35 on the UDB These pots are connected to the PIM headers at J3 The Header at J3 marks the pin for POT1 and POT2 on the board The maximum value of the potentiometers is reached by rotating to the left position When the POT is rotated to the right lower values are reached until minimum at the far right position A 1K ohm resistor is provided in series with the wiper of each potentiometer to protect against hard shorts to VCC3V3 or GND when the wipers are at either end of their rotation Refer to Appendix B User I O Devices for a table showing the layout of header J3 11 2 Switches Three push button switches BTNO BTN1 and BTN3 are provided These buttons are active high The output pins are pulled to ground through 20K ohm when the button is not pressed and are pulled to VCC3V3 through 10K ohm when the button is pressed The BNTO BNT1 and BTN3 positions are labeled on the board at connector J3 11 3 LEDs There are eight user I O LEDs on the UDB The LEDs are located at LDO through LD7 w
20. ge DIP Pin DIP Bus Connector DIP Bus Connector DIP Pin _ 1 DPB P1 DPB P28 8 2 DPB P2 DPB P27 7 3 DPB P3 DPB P26 6 4 DPB P4 DPB P25 5 5 1 2 14 Pin DIP Package fae ee 1 DPB P1 DPB P28 2 DPB P2 DPB P27 13 3 DPB P3 DPB P26 12 4 DPB P4 DPB P25 11 5 DPB P5 DPB P24 10 6 DPB P6 DPB P23 9 7 DPB P7 DPB P22 8 5 1 3 16 Pin DIP Package Ce a a 1 DPB P1 DPB P28 2 DPB P2 DPB P27 15 3 DPB P3 DPB P26 14 4 DPB P4 DPB P25 13 Sacer eA ee ace ee may be trademarks of their respective owners Page 10 of 27 Universal Development Board Reference Manual 5 DPB P5 DPB P24 12 6 DPB P6 DPB P23 11 7 DPB P7 DPB P22 10 8 DPB P8 DPB P21 9 5 1 4 20 Pin DIP Package DIP Pin DIP Bus Connector DIP Bus Connector DIP Pin 1 DPB P1 DPB P28 20 2 DPB P2 DPB P27 19 3 DPB P3 DPB P26 18 4 DPB P4 DPB P25 17 5 DPB P5 DPB P24 16 6 DPB P6 DPB P23 15 7 DPB P7 DPB P22 14 8 DPB P8 amp DPB P21 13 9 DPB P9 DPB P20 12 10 DPB P10 DPB P19 11 6 In Circuit Serial Programing ICSP A separate Microchip development tool capable of programming the microcontroller being used is required to make use of the UDB Suitable tools include the PICkit 2 PICkit 3 ICD3 and various other programming tools available from Microchip and some third parties The UDB board provides two connectors for attachment of the programming tool to the board These are the ICSP connector J8 and the Tag connector J14 6 1 ICSP Connector The ICSP connector J8 is a
21. he device programming signals depending on which DIP socket is being used Refer to section 6 3 below for information describing the jumper settings required 5 2 DIP Bus Clock Jumper The various PIC microcontrollers that can be used in the DIP sockets all have multiple options for the clock source for the main processor clock In many cases an internal oscillator can be used and it is not necessary to set any jumpers when using the internal oscillator The UDB board provides an external oscillator that can be selected as a clock source when an external oscillator is desired No explicit provision is made for use of an external crystal or resonator to make use of that clock option The UDB board provides an 8 pin DIP socket for an external oscillator Refer to section 9 below for more information about this oscillator Jumper JP7 is used to select the external clock source for the DIP socket being used JP7 is located near the 20 14 8 pin DIP socket IC2 and the DIP bus header Place the shorting block in the IC2 position to use the external Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 9 of 27 Universal Development Board Reference Manual DIGILENT BEYOND THEORY clock source with DIP socket IC2 or in the IC3 IC4 position to use the external clock source with either of those sockets Remove the shorting block from JP7 when using the internal
22. hich are connected to the PIM headers of J3 Each LED pin on PIM header J3 is marked on the PCB The pins are set to low to light each LED and high to turn each LED off Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 17 of 27 Universal Development Board Reference Manual ANP I LN BEYOND THEORY Appendix A PiCtail Plus PIM Bus Connections The following table sorted by PICtail Plus connector pin shows the connections between the PICtail connectors the PIM socket the on board PIC32MX360 and the PIM headers PICtail PIM PIC32 Pin PIM Header Standard Usage 1 23 J9 1 RB2 RB2 SS1 AN2 SPI1 SS 2 52 J9 2 RF2 RF2 U1RX UART1 RXD 3 55 J9 3 RF6 RF6 SCK1 SPI1 SCK 4 51 J9 4 RF3 RF3 U1TX UART1 TXD 5 54 J9 5 RF7 RF7 SDI1 SP11 SDI 6 57 J9 6 RG2 RG2 SCL1 I2C1 SCL 7 53 J9 7 RF8 amp RF8 SDO1 SPI1 SDO 8 56 J9 8 RG3 RG3 SDA1 I2C1 SDA 9 GND 10 GND 11 25 J9 9 RBO RBO 12 24 J9 10 RB1 RB1 13 22 J9 11 RB3 RB3 AN3 14 21 J9 12 RB4 RB4 AN4 15 GND 16 GND 17 19 J9 13 REY RE9 INT2 18 18 J9 14 RE8 RE8 INT1 19 47 J9 15 RD14 RD14 U1CTS 20 48 J9 16 RD15 RD15 U1RTS 21 VCC3V3 22 VCC3V3 23 VCC5VO 24 VCC5VO 25 VCC9VO 26 VCC9VO 27 90 J9 17 RGO RGO 28 87 J9 18 RFO RFO 29 89 J9 19 RG1 RG1 30 88 J9 20 RF1 RF1 31 N C Coie pre due amd Sorban nami men loned may berademanleoitheneepeevoawners Page 18 of 27 Universal Development Board
23. his EEPROM is only present on Rev E and later boards This EEPROM is connected to the SPI 2 position on the PIM bus It is connected to the signals RG6 PMPA5 SCK2 RG7 PMPA4 SDI2 and RG8 PMPA3 SDO2 The chip select CS of the EEPROM is accessed via signal RD12 on the PIM bus Jumper JP1 labeled SPI EEPROM Enable is used to enable disable the EEPROM Remove the shorting block on JP1 to disable the EEPROM When the shorting block is removed the EEPROM is held disabled and its other signals will be tristated When the shorting block is installed on JP1 the CS pin is connected to PIM bus signal RD12 and the EEPROM can be enabled by driving RD12 low Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 16 of 27 Universal Development Board Reference Manual DIGILENT The SPI EEPROM is wired directly to the PIM bus To use it from a DIP device in one of the DIP sockets it is necessary to use jumper wires from the DIP bus header to the PIM bus header to connect the appropriate DIP microcontroller pins to the above noted signals on the PIM bus When doing this ensure that there is no PIM installed in the PIM socket and that the on board PIC32MX360 is disabled by removing the shorting block from the PIC32 Enable jumper 11 User I O Devices The USB features two potentiometers three push button switches and eight discrete LEDs to provide on board O us
24. igilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 21 of 27 Universal Development Board Reference Manual DIGILENT j BEYOND THEORY Appendix B PICtail Plus PIM Bus Connections The following table sorted by PICtail Plus connector pin shows the connections between the PICtail connectors the PIM socket the on board PIC32MX360 and the PIM headers PICtail 65 1 J9 37 RG15 RG15 114 3 J11 6 RES RES PMPD5 JB 8 115 4 J11 5 RE6 RE6 PMPD6 JB 9 116 5 J11 8 REZ RE7 PMPD7 JB 10 85 6 J10 17 RC1 RC1 86 7 J10 22 RC2 RC2 87 8 J10 19 RC3 RC3 88 9 J10 24 RC4 RC4 35 10 J9 23 RG6 RG6 PMPAS SCK2 SPI2 SCK JA 4 37 11 J9 25 RG7 RG7 PMPA4 SDI2 JA 3 39 12 J9 27 RG8 RG8 PMPA3 SDO2 JA 2 78 13 J10 14 MCLR MCLR 33 14 J9 21 RG9 RG9 PMPA2 SS2 SPI2 SS JA 1 69 17 J10 1 RAO RAO TMS 18 18 J9 14 RE8 RE8 INT1 17 19 J9 13 RED RE9 INT2 77 20 J10 9 RB5 RB5 AN5 14 21 J9 12 RB4 RB4 AN4 13 22 J9 11 RB3 RB3 AN3 1 23 J9 1 RB2 RB2 SS1 AN2 SPI1 SS 12 24 J9 10 RB1 RB1 11 25 J9 9 RBO RBO 75 26 J10 7 RB6 RB6 AN6 a eA ee a ee may be trademarks of their respective owners Page 22 of 27 Universal Development Board Reference Manual VX DIGILENT BEYOND THEORY Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 23 of 27 Universal Development Board Refere
25. lock is removed from JP2 This will cause the on board PIC32MX360 to be held in reset If the shorting block is not removed the signals from the on board PIC32MX360 will interfere with signals from the processor in the PIM causing erratic operation and possibly damaging one or both processors The combination of the on board PIC32MX360 and the ability to use PIM processor allows the UDB to support most 3V 16 bit and 32 bit PIC and dsPIC microcontrollers When using PIM modules with the UDB board refer to the Microchip information sheet for the PIM being used for any necessary information about how the microcontroller signals are connected to the PIM Socket pin positions Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 6 of 27 Universal Development Board Reference Manual VA BEYOND THEORY Many Microchip PIMs are not wired straight through and it is necessary to refer to the Microchip PIM information sheet to understand how they are wired 3 1 On Board PIC32MX360 The UDB has a PIC32MX360F512L microcontroller soldered onto the board This microcontroller is wired to the PiCtail Plus bus in the same manner as would be the case for a PIM plugged into the PIM Socket This allows the UDB board to be used for PIC32 application development without requiring the use of PIM or DIP socketed microcontrollers Jumper JP11 labeled PIC32 Current on the boa
26. m the PIC32 Enable jumper JP2 The programming signals MCLR PGD and PGC are available on pins 1 2 and 4 respectively of header J7 labeled PROG on the board The pins on J7 can be used to monitor the programming signals for troubleshooting purposes or using jumper wires it is possible to route the signals to other places on the board 6 3 1 IC2 Program Jumper Settings The following diagram illustrates the setting for the program jumpers when using PIC12 16 devices in DIP socket IC2 J6 J7 JP8 a a ic OO IQQ c3 S QQ l c3_es Q3 OO QQ c4 e PROG JUMPERS D 6 3 2 IC3 Program Jumper Settings The following diagram illustrates the settings for the program jumpers when using dsPIC33 PIC32 and most PIC24 devices in DIP socket IC3 J6 J7 JP8 OO QQ c2 Ol E ae c p OO JOO c2_es 3 OO QQ ic4 a PROG JUMPERS Sacer eA ee ace ee may be trademarks of their respective owners Page 12 of 27 Universal Development Board Reference Manual DIGILENT j BEYOND THEORY 6 3 3 IC3_GS Program Jumper Settings The following diagram illustrates the settings for the program jumpers when using PIC24 GS family devices in DIP socket IC3 J6 J7 JP8 OO OO c2 Os OO IQQ c3 i i E ics_cs OO QQ c4 r PROG JUMPERS D 6 3 4 IC4 Program Jumper Settings The following diagram illustrates the settings for the prog
27. nce Manual VX DIGILENT BEYOND THE Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 24 of 27 Universal Development Board Reference Manual DIGILENT BEYOND THEORY Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 25 of 27 Universal Development Board Reference Manual A BEYOND THEORY Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 26 of 27 Universal Development Board Reference Manual VAT asa BEYOND THEORY Appendix C User I O Devices This table describes the connections to the user I O devices appearing on connector J3 I O Device I O Device 1 2 LDO LD1 LD2 3 4 LD3 LD4 5 6 LD5 LD6 7 8 LD7 POT1 9 10 POT2 BTNO 11 12 BTN1 BTN2 13 14 CLK32K VCC3V3 15 16 GND Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 27 of 27
28. on modules available from Microchip Most PICtail modules will plug vertically into socket J12 but some expansion boards are designed to be coplanar with the microcontroller board and will attach to the card edge land pattern at J13 Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 7 of 27 Universal Development Board Reference Manual WAV ae BEYOND THEORY The PICtail Plus bus is based on a 120 pin connection divided into three sections of 30pins 30pins and 56pins The two 30 pin connections have parallel functionality Each 30 pin section provides connections to all of the serial communications peripherals as well as I O port This functionality provides enough signals to develop many different expansion interfaces In addition to the microcontroller signals the PICtail Plus bus has pins defined for three power supply voltages and ground The pins labeled as 3V3 are powered from the main 3 3V power supply on the UDB board The pins labeled as 5VO are powered directly from the power supply source selected by the power select jumper J21 These pins will only be at 5 0V if the power supply used to power the board is a regulated 5V supply or USB The pins labeled as 9VO are powered from a power supply attached to header J5 in the upper right corner of the board Header J5 is used to bring in an externally regulated 9V power supply to those pins 4 1
29. oscillator option with the DIP device 5 3 DIP Bus Header The three DIP sockets are connected in parallel and wired to the DIP bus header connector J6 Connector J6 is used to access the I O signals for the microcontroller being used in one of the DIP sockets Jumper wires can be used to connect DIP microcontroller signals from the DIP bus connector either to on board I O via connector J3 to PIM bus locations via connectors J9 J10 or J11 allowing access to the PICtail connectors and thus PICtail Plus modules or to off board devices The assignment of DIP socket pins to header pins on the DIP bus connector follows the convention for pin numbering on DIP sockets i e pin 1 is on the upper left corner to the header and the pin numbering proceeds counter clockwise around the pins of the header Connector J6 is a 28 pin 2x14 header connector It is wired straight through for the 28 pin DIP sockets When using the 20 14 8 pin DIP socket or smaller DIP packages e g 8 pin 14 pin etc in any of the sockets take care to identify the correct pins to find the microcontroller signals on the DIP bus connector To aid in identifying which pins will be active when using smaller pin count DIP devices vertical bars are marked on silk screen of the board to identify the pins in use for each package size Refer to the following tables for the correspondence between DIP package pins and connector pins on the DIP bus connector 5 1 1 8 Pin DIP Packa
30. ram jumpers when using PIC16 PIC18 devices in DIP socket IC4 J6 J7 JP8 OO IQQ c2 Old OO QQ c3 I OOI IOO Ic3_Gs O E ie c m PROG JUMPERS D 7 Oscillator Options The UDB board has provision for two oscillators an 8 pin DIP socket IC6 for a socketed high frequency oscillator and an unload footprint IC1 for a surface mounted 32 768KKHz low frequency oscillator 7 1 High Frequency Oscillator Oscillator socket IC6 labeled CLKIN on the board is used to provide a high frequency clock source for the processor clock for use with any of the DIP sockets the PIM socket or the on board PIC32MX360 As shipped from the factory IC6 is loaded with an Epson SG8002 programmable CMOS oscillator The oscillator shipped with the board will be programmed to operate at 8MMHz The SG8002 is a one time programmable device that can be programmed for any frequency in the range 1MHz to 120MHz If an oscillator frequency other than 8MHz is desired an SG8002 programmed to the desired frequency can be obtained and installed in the IC6 socket An SG8002 programmed to the desired operating frequency can be obtained from a number of electronics distributors such as Digikey or Mouser The SG8002 is available in both 5V and 3 3V versions Ensure that a 3 3V device is obtained when purchasing a new oscillator The output of the IC6 oscillator called CLKIN in the schematic is hard wired to the OSC1 CLKI RC12 position on the
31. rasasacevasenedeondecacuesedseneeessea 13 F2 LOW Freguency OS ila O ir erinan Ta EEEE 14 BPC RCT ACC E E E E E 14 9 PMOL Nte ACO e E E S 15 g1 PMO COMME CEO JA eeir a E EEE E NERES 16 g2 POTC COME TO IB AAN EAT nae 16 10 Serna EEPROM oci E E 16 11 User 170 Devices ssosoe0s0s0sosososososcsosososssssosososcsosssososssososososssososososososssssososososssossssse 17 11 1 Analog Input Potentiometer eseseseresesererererererererersrererererersserersrererererereserersserereses 17 11 2 SLE NS e E E E E SS EE PEA ENE EE E A 17 11 3 LED E E E E 17 Appendix A PICtail Plus PIM Bus Connections cs ccsscssscssscssccsscnscccsccsscnssccsesescscsesesess 18 Appendix B PICtail Plus PIM Bus Connections ssossossssossossossssossossossosossossossosessossossose 22 Appendix C User I O Devices sssssscssccssscsscssccnsccescnsccnsecescsccesecescsccusesescusccesesescusssusenens 27 AER E E once may be trademarks of their respective owners Page 2 of 27 Universal Development Board Reference Manual VAT asa BEYOND THEORY Overview The Universal Development Board UDB is a microcontroller development board intended to use with a wide variety of PIC microcontrollers from Microchip It was designed to support most 3 3V PIC microcontrollers in 8 bit 16 bit or 32 bit varieties It will accommodate a wide range of Microchip PIM processor modules as well as DIP packaged parts with pin counts from 8 pin to 28 pin Three
32. rd can be used to measure the power supply current being consumed by the on board PIC32 microcontroller To measure the on board PIC32 operating current remove the shorting block from JP11 and insert an ammeter in series between the two pins of JP11 When not measuring power supply current consumption of the on board PIC32 microcontroller ensure that the shorting block is installed on JP11 The on board PIC32 microcontroller will not receive power if the shorting block is not installed on JP11 When not using the on board PIC32 and using a PIM modules instead it may still be necessary to have the shorting block installed on JP11 Leaving the on board PIC32 microcontroller unpowered may load the pins of the PIM down and cause erratic operation of the processor on the PIM module Note The PIC32 Current measurement jumper JP11 only exists on Revision E and later UDB boards The jumper at JP2 is used to enable or disable the on board PIC32MX360 microcontroller When using the on board PIC32 microcontroller ensure that no PIM is installed on the PIC Socket and insert a shorting block onto JP2 This enables the on board PIC32 for operation WARNING Most Microchip programming tools such as the PICkit 3 are capable of generating the high programming voltages necessary for programming some PIC microcontrollers This programming voltage can be as high as 13V for some devices When programming these devices the programming voltage is applied to the MC
33. s open collector drivers to allow multiple devices to drive the bus signals Devices on the bus actively drive the signals low The high state on the I C signals is achieved by pull up resistors when no device is driving the lines low One device on the I C bus must provide the pull up resistors The UDB provides 2 2K ohm pull up resistors Generally only one set of pull up resistors is used on the bus Jumpers JP3 and JP4 can be used to disable the on board pull up resistors if a different value is needed or some other device on the bus is providing the pull ups The on board pull up resistors are enabled by install shorting blocks on JP3 and JP3 Removing the shorting blocks disables the pull up resistors Copyright Digilent Inc All rights reserved Other product and company names mentioned may be trademarks of their respective owners Page 14 of 27 Universal Development Board Reference Manual DIGILENT BEYOND THEORY Gee OO OO OOOO OO OO O a 2 N Y G M Pull ups Pull ups Enabled Disabled Figure 1 Jumper Settings for 12C Pull ups 9 Pmod Interface The UDB board provides two Pmod connectors for use with Pmod peripheral modules Pmods are a line of small peripheral interface modules available from Digilent The range of available Pmod peripheral modules include various connectors sensors such as accelerometers and gyroscopes a wide variety of A D and D A converters input output devices such as buttons switches LEDs
34. smit process and LD13 which turns on during a receive process Refer to the Microchip data sheet for the MCP2200 for more detailed information about the operation of the USB serial converter circuit 3 PIM Module The UDB was designed with the ability to use detachable PIM processor modules It will work with 16 bit PIC24 and dsPIC33 PIMs as well as 32 bit PIC32 PIMs compatible with the Microchip Explorer 16 development board PIM processor modules are installed onto the pattern of vertical pins at the location labeled PIM Socket on the board PIMs are visually indexed for proper orientation The PIM is always installed with the notched corner mark to the upper left When installing or removing a PIM module use care to ensure that the pins of the PIM connector socket properly seat into the socket on the PIM and take care to not bend the pins of the PIM socket pattern on the board Jumper JP9 labeled PIM Current on the board can be used to measure the power supply current being consumed by the PIM module To measure PIM current remove the shorting block from JP9 and attach an ammeter in series between the two pins of JP9 When using a PIM module and not measuring current consumption of the PIM ensure that the shorting block is installed on JP9 The PIM will not receive power if the shorting block is not installed The jumper at JP2 is used to enable or disable the on board PIC32MX360 microcontroller When using a PIM ensure that the shorting b
35. umpers J15 and J16 labeled PROG JUMPERS on the board are used to route the programming signals PGC and PGD to the appropriate DIP socket These jumpers are on the left side of the board near the ICSP connector Place shorting blocks in the appropriate position of J15 and J16 for the DIP socket being used When using a DIP device in the IC2 socket place the shorting blocks in the IC2 position Similarly when using the IC4 socket place the shorting blocks in the IC4 position Note that there are two positions for socket IC3 This is because there are two different programming signal pin assignment conventions used for PIC24 devices For PIC24 GS family devices place the shorting blocks in the IC3_GS position For all other PIC24 devices as well as dsPIC33 and PIC32 devices place the shorting blocks in the IC3 position It is necessary for shorting blocks to be placed in the same position on both J15 and J16 Programming jumper JP8 is used to route the MCLR signal to the appropriate pin depending on the socket being used Jumper JP8 is in the vicinity of the DIP bus header and the 20 14 8 pin socket IC2 This is a two position jumper Place the shorting block in the IC2 position when using the IC2 socket and place the shorting block in the IC3 4 position when using either of those sockets When using either a PIM on the PIM Socket or a DIP device in any of the DIP sockets the on board PIC32MX360 should be disabled by removing the shorting block fro
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