Artic Consultants Limited
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1. Artic Consultants Limited MCP250xx Development System Artic Consultants MCP250xx Development System C 2007 Artic Consultants Ltd User Manual Version Release General Release MCP250xx Development System User Manual 1 of 25 Project MCP250xx Development System Date N A Time N A Location Contents Contents Revision History MCP250xx Dev Sys Overview Overview Installation MCP250xx Hardware 1 0 Hardware Overview 1 1 Main Programmer Board Details MCP250xx Software 1 0 Software Overview 2 0 Software Detail Programmer Operation Overview Reading Target MCP250xx Configuration Configuration Operation Overview Revision History Issue Date Author Comment 1 14 03 07 S Allwood First Issue MCP250xx Development System User Manual 2 of 25 NNN A A BR WW WN DY MCP250xx Dev Sys Overview Overview The MPC250xx Development System allows a user to quickly and accurately configure and Program the Microchip MCP250xx CAN expanders Configuration amp Programming is carried out in a simple GUI interface where each aspect of the MCP250xx configuration is detailed The MCP250xx Development System will also read and write Microchips own dvs file format which ensures full forward and backward capability with existing MCP250xx configuration files Installation MCP250xx Development System will not operate without the USB2. Configuration Comment Prototype config for project XXy A Use ASCII Format This setting allows the user to enter ASCII data into the user ID bytes of the MCP250xx B User HEX Format This setting allows the user to enter HEX value data into the user ID bytes of the MCP250xx C Configuration Comment This setting allows the user to provide a comment about this MCP250xx configuration E g V1 2 Config Date 12 5 06 Project Dash W L Driver MCP250xx Development System User Manual 25 of 25
3. This feature allows a pre programmed MCP250xx configuration to be read from the device MCP 250xx Development System Save Read Config Data Do you wish to save this Config Data Once the configuration has been read an option to save the configuration to file will be available Also the Write Config option will be available Writing Target MCP250xx Configuration MCP250xx parts are OTP one time programmable So before writing data to the target MCP250xx always ensure that the configuration you will be writing is correct errors cannot be corrected after the write process has taken place This message will always be shown if a Write to target memory has been requested MCP250xx Development System User Manual 10 of 25 MCP 250xx Development System AN Confirm MCP250xx Write Click WRITE to write data to MCP250xx part Click CANCEL to cancel write request Clicking the CANCEL button will cancel the write request and return back to the programmer main screen Clicking the WRITE button will start the write process to the target MCP250xx EPROM memory Write MCP250xx After the write process the target MCP250xx EPROM memory is validated MCP250xx Validation Low Voltage Yalidation Standard Voltage Validation High Voltage Validation Validation Check MCP250xx Development System User Manual 11 of 25 Configuration Operation Overview MCP250xx configuration is view easy to accomplish via the GU
4. mode to be enabled for PGIO pins configured as digital input MCP250xx Development System User Manual 21 of 25 ADC Settings This section allows the user to configure the ADC section of the MCP250XX parts NB Only the MCP25050 amp MCP25055 parts contain an ADC module File Configure View Options Help MCP Type OSC Type CAN Engine CAN ID Scheduled Tx Options GPIO Settings ADC Settings pwm Settings User ID ADC Module Main Contra v Enable ADC Converter ANAO OFF ANAL ON ANAZ OFF ANAS OFF ANA3 Threshold Detect OFF Trigger NJA a Threshold Level 563 m 2 751 ref Selection Y ref GPS 5 Vref Selection reF GP4 0 ANA2 Threshold Detect ON Trigger Low To High a Threshold Level 529 ADC Aquisition Time 8 x 64 Tosc ADC Conversion Rate Fosc 32 Auto Conversion Time 1 32 ANAL Threshold o Trigger Low To High Detect ON a Threshold Level 767 iw 3 748 V 0 032 msec 500 Khz 2 048 msec ANAO Threshold Detect ON Trigger Low To High a Threshold Level 1006 m 4 9164 E E E Programmer A ADC Module Main Control This section allows the user to configure the default mode for the ADC B Vref Selection This section allows the user to input the Vref voltage value that will be used C Vref Section This section allows the user to input the Vref voltage value that
5. will be used D ADC Acquisition Time This setting allows the user to select how long the ADC module spends reading a value before ADC conversion takes place E Auto Conversion Rate This section allows the user to selects the speed of the ADC conversion F Auto Conversion Time This setting allows the user to select the time the ADC module waits before carrying out an auto conversion G ANA3 Threshold This section details how the direction and level of signal to cause a threshold detection CAN frame to be sent MCP250xx Development System User Manual 22 of 25 H ANA2 Threshold This section details how the direction and level of signal to cause a threshold detection CAN frame to be sent 1 ANA1 Threshold This section details how the direction and level of signal to cause a threshold detection CAN frame to be sent J ANAO Threshold This section details how the direction and level of signal to cause a threshold detection CAN frame to be sent MCP250xx Development System User Manual 23 of 25 PWM Settings This section allows the user to set up the PWM outputs of the MCP250xx part MCP Type OSC Type CAN Engine CAN ID Scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID PWM1 Settings PWM Parameters PWM Output Status ON PWM Period 16 Timer Pre Scaler a Period 0 248 msecs Freq 4 0322 Khz Duty Period 0 036 msecs PWM Duty Cycle Duty Cycle 14 5 Vat ct K P
6. 250xx part can enter sleep mode E PUSLP This option sets the operational mode of the CAN engine after a Wake up event has occurred F CMREQ This option must always be enabled during a self configuration event MCP250xx Development System User Manual 20 of 25 GPIO Settings This section sets up the I O configuration that will be used by the MCP250xx part after a successful self configuration MCP Type OSC Type CAN Engine CAN ID Scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID AR GPIO Pin Function Generate CAN Frame On Change oft Oeioo Digital 1 P Input OLow To High I P Change Ocon O Digital O P Output P Data OE LOU High To Low I P Change Oroz O Analog 1P Input epPio3 PWM O P Output Ocrio4 Ocrios Ocoee Oco Enable Weak Pull Up Resistors on Digital Inputs A GPIO This section allows the user to select the I O pin that requires configuration B GPIO Pin Function This section allows the user to select the type of I O that will be used on this pin Not all 1 O pins has the same functionality C Generate CAN Frame On Change This section allows the user to configure which I O pins will crate a CAN frame on input status change or ADC threshold detected D Default Output Value This section allows the user to set the default I O state when the GPIO pin is configured as Digital Output E Enable Weak Pull Ups This setting allows the Weak Pullups
7. I Configuration screen Each main area of MCP250xx configuration is split and grouped together into related areas There are 10 main sections in the MCP250xx configuration page MCP Type OSC Type CAN Engine CAN ID Scheduled TX Options GPIO Settings ADC Settings PWM Settings User ID O O O O O O Q oO O oO MCP250xx Development System User Manual 12 of 25 MCP Type This section allows the user to select the type of MCP250xx part that will use the configuration P250 pura File Configure View Options Help ee MCP Type OSC Type CAN Engine CAN ID Scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID vdd PSU Enter vdd Value MCP Type Selection MCP25050 2 Wire CAN MCP25055 1 Wire CAN MCP25020 2 Wire CAN MCP25025 1 Wire CAN Programmer A Vdd PSU This section allows the user to enter the Vdd voltage that the MCP250xx part will use This value allows the other configuration screens to calculate real world values e g threshold values etc B MCP Type Selection This section selects the type of MCP250xx part that will use this configuration Depending on the type of MCP250xx part selected certain sections of the configuration screens will be disabled MCP250xx Development System User Manual 13 of 25 OSC Type This section allows the user to select the type of oscillator that will be used with the MCP250xx part and
8. WM2 Settings PWM Default Output PWM Output Status ON V Enable PWM Output Default values 1 Timer Pre Scaler Period 0 01 msecs Freq 100 Khz lt Duty Period 0 0011 Duty Cycle 11 2 lt PPR A PWM1 Timer Pre Scaler This setting configures the default pre scaler value B Period This setting is used to program the default PWM frequency required C Duty Cycle This setting is used to program the default Duty Cycle used by the PWM generator D PWM1 Timer Pre Scaler This setting configures the default pre scaler value E Period This setting is used to program the default PWM frequency required F Duty Cycle This setting is used to program the default Duty Cycle used by the PWM generator G Enable PWM Default Values This enables the PWM output to revert to the programmed default PWM settings if the event of an error condition etc MCP250xx Development System User Manual 24 of 25 User ID This section allows the user to set the user ID bytes of the MCP250xx These bytes do not alter the operation of the MCP only allow the user to include Serial Number and hardware Number etc information These bytes can be read via CAN MCP Type OSC Type CAN Engine CAN ID Scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID ji Use ASCII Format MCP User Id ASCII Format 1234567 ABCD1234 Use HEX Format MCP User Id HEX Format HEX ID Code
9. allows the user to detail the speed of the oscillator This speed value will be other configuration sections to show real world values and times that have been selected File Configure View Options Help MCP Type OSC Type CAN Engine CAN ID Scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID Oscillator Configuration OLP Low Power Crystal OXT Crystal Resonator na HS High Speed Crystal Resonator BR Oscillator Frequency Mhz 16 Mhz Example 20 20Mhz Programmer A Oscillator Configuration This section selects the type of crystal resonator circuit that will be used with the MCP250xx part B Fosc Oscillator Frequency This section allows the user to enter the oscillator speed in Mhz MCP250xx Development System User Manual 14 of 25 CAN Engine This section allows the user to configure the CAN Engine It features a Auto Calc Baud rate generator so the basic required baud rate can be calculated very quickly Other settings allow the user to change the baud rate Tq settings etc MCP250xx Configuratio File Configure View Options Help MCP Type OSC Type CAN Engine CaN ID Scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID Auto Cale Baud Rate Solutions 2 Wake Up Filter Enable MCP Osc Freq 16Mhz Baud Rate Prescaler TQ 2x4x 1 Fosc J E Find Solutions Baud Rate Solutions Propargat
10. driver software first being installed Please install the software before continuing to use the MCP250xx Development System Responsibilities of Operation of MCP250xx Hardware amp Software Connecting MCP250xx hardware to an existing CAN bus may cause errors and in operation Serious Injuries and Damage to systems other people equipment and the user may result if the MCP250xx hardware is not operated in a responsible manor MCP250xx Development System User Manual 3 of 25 MCP250xx Hardware 1 0 Hardware Overview This board contains the main control system and production quality programmer This board has been designed to allow a number of System Modules to be connected and controlled via the main control system Main Programmer Board 1 1 Main Programmer Board Details A USB2 0 Connector This connects the MCP250xx hardware to the PC system running the MCP250xx Development System Software B DC PSU Socket This is the PSU socket Connect the supplied PSU to this socket Connecting any other PSU to this socket could result in damage to the MCP250xx development system hardware The MCP250xx requires a PSU connection with the following specifications o 18v dc MCP250xx Development System User Manual 4 of 25 o 250mA o Centre Pin Positive C System Module connectors These connectors 6 are reserved to allow suitable System Modules to be connected to the MCP250xx Development Sy
11. ed ID 29 Bit ID O Extended ID 29 Bit ID Extended ID 29 Bit ID Frame ID 100 Frame ID 101 Frame ID 102 Dh MASK Applies to RXIDO and RXID1 Standard ID 11 Bit 1D O Extended ID 29 Bit ID ID Hex 7FF 11111111 111 Z Enable Command Ack Msg RXIDO READ REGISTER REQUEST using RTR or NoneRTR IRM Standard ID 11 Bit ID O Extended ID 29 Bit ID ID Hex 200 01000000 Use RTR for IRM Messages Eke 1D1 WRITE REGISTER REQUEST Standard ID 11 Bit ID Extended ID 29 Bit ID ID Hex 01000010 Programmer A TXIDO This sets the ID used for TX Buffer 0 This buffer is used to send Bus On and scheduled transmissions The user can select Standard or Extended Frame type and enter the ID used in HEX format B TXID1 This sets the ID used for TX Buffer 1 This buffer is used to send Command Ack Receive Overflow and Error Condition transmissions The user can select Standard or Extended Frame type and enter the ID used in HEX format C TXID2 This sets the ID used for Digital I P edge detection and Analog input edge detection transmissions The user can select Standard or Extended Frame type and enter the ID used in HEX format D RX Mask This setting allows the user to limit the scope of the MCP when receiving CAN frames Usually this value should be set to all 1s to ensure the MCP only responds to the required RXO and RX1 ID va
12. grammer Screen Configure View Options Help rare ens ee i 3 Main Programmer Feature Description A File Menu This menu allows the user the following options New Creates a new default MCP250xx configuration The MCP25020 MCP25025 MCP25050 amp MCP25055 default parameters are supported O Open Allows a user to reload a previously saved MCP250xx configuration file Two file formats are supported Save Allows a user to save the current MCP250xx configuration settings Two file formats are supported Save As Allows a user to save the current MCP250xx configuration settings The user needs to supply a valid file name Two file formats are supported Default File Types This option allows the user to set the default file type The Artic MCP250xx Development System supports two file types Type 1 Artic Development System ads Type 2 Microchip Development System dvs This option is disabled if the Artic Development System hardware has not been detected Exit Causes the application to close Configure MCP250xx Development System User Manual 8 of 25 Communications Port This setting allows the user to select the communications port that will use to communicate with the MCP250xx Development System Hardware C View Config Registers Shows the values of the configuration registers in Hex and Binary formats I O Visual Shows the I O settings of the MCP250xx D Options Vdd amp Vpp Calibrati
13. h of the CAN bus media E g a short and lightly loaded CAN bus should use a small PropSeg value While a long CAN bus should use a large PropSeg value G Phase Buffer 1 Segment This together with Phase Buffer 2 Segment sets the sample point used by the CAN engine H Phase Buffer 2 Segment This together with Phase Buffer 1 Segment sets the sample point used by the CAN engine I SIW TQ This section sets the size of the re sync window J Results This shows the current selected calculated baud rate and the error against the required baud rate MCP250xx Development System User Manual 16 of 25 CAN ID This section allows the TX and Rx buffers to be defined and how the MCP250xx part responds to CAN messages Using actual ID s rather than setting SID amp EID bytes means that the user can quickly set the ID s used by the MCP250xx without the need to resort to binary to hex conversions etc P250xx Co Bu File Configure View Options Help MCP Type OSC Type CAN Engine CANID scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID Bh TXIDO TXID1 TXID2 When Transmitted When Transmitted When Transmitted 1 Bus On 1 Command Ack 1 Dig I P Edge Detection 2 Scheduled Transmission 2 Receive Overflow 2 Ana I P Threshold Detection 3 Error Condition ID Type ID Type ID Type Standard ID 11 Bit ID Standard ID 11 Bit ID Standard ID 11 Bit ID O Extend
14. ion Time Segment 1 TotTq 16 55 1Tq PS 5Tq P51 5Tq P52 5Tq PreScale 4 PROP SEG STQ v AE BTLMODE ample Type Phase Buffer 1 Segment OPS1 or IPT 1x PHI SEG STQ cnr3 Ox Phase Buffer 2 Segment Nominal Bit Time Parameters H AH PH2 SEG 5TQ v Nominal Bit Time SIWTQ Sample Point 68 All SIW 4TQ v SYNC PROP PHI PH2 Totallqa seq SEG SEG SEG Results 16Tq 11 Siq STq 5Tq 4Tq Actual Baud Rate 125K Baud Rate Error 0 SIW Programmer A Auto Calc Baud Rate This section allows the user to enter the required baud rate and auto calculate the CAN engine settings needed All the solutions are shown in a drop down list and allows the user to select the best fit for the hardware CAN bus application B BTLMODE This section allows the user to have Phase Seg2 linked to Phase Seg1 or to be freely programmable C Sample Type This setting selects the number of samples taken when reading the bus level D Wake Up Filter Enable This selects an additional filter to be applied to the Rx input of the CAN engine and stops the MCP250xx waking up due to noise E Baud Rate Prescaler This sets the BRP setting A large value results in slower baud rates being generated F Propagation Time Segment MCP250xx Development System User Manual 15 of 25 This sets the Tq used for the Propagation time This setting should reflect the actual time taken by the signal to travel the lengt
15. lues E RXIDO MCP250xx Development System User Manual 17 of 25 This setting allows the user to set the base CAN ID that the MCP250xx will respond to when data is requested from the MCP250xx It also allows the user to select the type of messaging used for the IRM messages F RXID1 This setting allows the user to set the base CAN ID that the MCP250xx will respond to when data is written to the MCP250xx MCP250xx Development System User Manual 18 of 25 Scheduled TX This section allows the user to set the type and speed of the scheduled TX from the MCP250xx part MCP250xx Config File Configure View Options Help MCP Type OSC Type CAN Engine CAN ID Scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID Scheduled Transmission V Enable Scheduled Transmissions Mitransmit AJD and GPIO Data Base Frequency 1x 4096 Tose x Scheduled Transmission Multiplier 8 x Base Frequency v Scheduled Transmission Time 2 048 msecs Programmer A Enable Scheduled Transmissions This enables or disables the scheduled transmission from the MCP250xx part B Transmit A D and GPIO Data This setting allows the A D and GPIO data be to added or removed from the scheduled transmission C Base Frequency This setting selects the scheduled transmission pre scaler timer value D Scheduled Transmission Multiplier This setting selects the scheduled transmi
16. on Allows the user to calibrate the Vdd amp Vpp values of the programmer hardware The actual values are shown in the About Screen E Help Artic Consultants on the web This item opens a web browser and navigates to the Artic Consultants Ltd web site About MCP250xx Development System This shows hardware amp software version numbers Programmer Calibration status and ICE Status F Read Config This button will cause a read from the target MCP250xx EPROM memory G Write Config This button will cause a write to the target MCP250xx EPROM memory H Status This area of the screen shows details of the current Development System operation l Configuration This button opens the GUI MCP250xx configuration screen J ICE This button opens the GUI In Circuit Emulator screen MCP250xx Development System User Manual 9 of 25 Programmer Operation Overview The programmer provides a way to read and write MCP250xx configuration files to the OTP memory of a target MCP250xx part Production Quality Programmer The programmer is a Production Quality programmer Where the MCP250xx part is written using an accurate 5v applied to Vdd The target MCP250xx part is validated at the limits of valid Vdd operation 2 7v dc and 5 5v dc This ensures that the configuration data is correctly programmed and the MCP250xx part can be used with all valid Vdd voltage settings Reading Target MCP250xx Configuration Read MCP250xx
17. rmation is correctly programmer The verify process uses a Vdd of 5 5v 5 0v and 2 7v to ensure the information is correctly programmed into the MCP250xx PASS Green Indicates if the target MCP250xx part has been correctly programmed and verified correctly This indicator will remain lit until a fresh program cycle is started FAIL Red Indicates that the target MCP250xx part failed to program and verify correctly This indicator will remain lit until a fresh program cycle is started MCP250xx Development System User Manual 6 of 25 MCP250xx Software 1 0 Software Overview The MCP250xx Application software provides a GUI environment to develop MCP250xx configurations The software will read and write previously developed configuration files of Microchips own dvs format This gives the Artic MCP250xx Development System full forward and backward compatibility The supplied software is designed to run on the following platforms All supported platforms operate in a similar manor o Microsoft Windows XP o Mac OS X o Linux OS 2 0 Software Detail 2 1 Application Start Artic Consultants MCP250xx Development System C 2007 Artic Consultants Ltd This image will be shown for five seconds while the application is starting Once the application has fully initialised the splash screen is removed and the Main Programmer Screen is displayed MCP250xx Development System User Manual 7 of 25 2 2 2 Main Pro
18. ssion post scaler timer value E Scheduled Transmission Time This shows the calculated scheduled transmission period MCP250xx Development System User Manual 19 of 25 Options This section allows the user to configure the various options contained within the MCP250xx part These options mainly deal with setting up the required interaction of the MCP250xx and the CAN bus MCP250xx guratio File Configure View Options Help MCP Type OSC Type CAN Engine CAN ID Scheduled Tx Options GPIO Settings ADC Settings PWM Settings User ID PUNRM Enter NORMAL Mode after Self Configuration LISTEN ONLY Mode after SelF Configuration NORMAL Mode after Self Configuration ERREN Error Recovery From Bus Off LISTEN ONLY Mode Recovery O NORMAL Mode Recovery z TXONEN Tx on Error Condition REC or TEC B Z Enable Tx On Error Count gt Thresholds B SLPEN Sleep Mode Enable 7 Enable Sleep Mode on Idle Bus PUSLP Sleep Mode during LISTEN ONLY Mode Power Up Enable Sleep during LISTEN ONLY Mode CMREQ Operation Mode Programmer A PUNRM This option sets the CAN engine operation mode that will immediately run following a successful self configuration B ERREN This option sets how the MCP handles a recovery from error event C TXONEN This option enables the TX on Error Count gt Threshold CAN frame D SLPEN This option sets how the MCP
19. stem hardware No not connect anything to these connectors or damage to the MCP250xx hardware may result D Programmer Zip Socket This ZIF socket is provided to allow a quick connect release of MCP250xx parts during a programming session E MCP250xx ICSP Header This simple pin header allows the programmer to be used in an ICSP mode where a conventional ICSP connector cannot be used ICSP Pin Header Connections C2007 ARTIC CONSULTANTS LTD F RJ45 ICSP MCP250xx ICSP Socket This socket allows the programmer to be used in an ICSP mode The use of the industry standard RJ45 connector makes this ICSP connection compatible with other ICSP programmers ICD2 etc RJ45 Socket Pin Detail Pint Vpp Pin2 Vdd Pin3 Gnd Pin4 Data Pin5 Clock Pin6 N C MCP250xx Development System User Manual 5 of 25 G Status Led s These Led s allow the status of the Programmer to be understood The Led s detail the following functionality PWR Green Indicates that the Main board is powered and is operating correctly This LED will flash slowly 1Hz in a problem with the programming voltage calibration has occurred RD Green Indicates when the programmer is reading information from the target MCP250xx part WR Yellow Indicates when the programmer is writing information to the target MCP250xx part 2 Main Control Window VAR Yellow Indicates when the programmer is verifying the programmed info
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