ET-MEGA2560-ADK
Contents
1. e No 6 It is LED to display the operating status of RX and TX It shows the process of transmitting receiving data between Board ET MEGA2560 ADK and computer PC through Port USB e No 7 It is LED D13 to test the operation of BootLoader and test the operation of Board that is controlled by Pin Digital 13 It runs by Logic 1 and stops running by Logic 0 e No 8 It is Switch RESET to reset the operation of Board e No 9 It is Connector AVRISP to program BootLoader into MCU e No 10 It is Connector Power e No 11 12 It is Connector Analog A 0 7 and Analog A 8 15 respectively e No 13 14 15 It is Connector Digital D 0 7 D 8 13 and D 14 21 respectively e No 16 It is Connector Digital D 22 53 ETT CO LTD 4 WWW ETT CO TH User s Manual of Board Microcontroller ET MEGA2560 ADK ETT Specification of signals of Board ET MEGA2560 ADK RESET is Logic It MCU Low sources FT232RL 3V3 LM1117 3V3 5V external External Power Swi USB Port Supply tching Regulate maximum current at this 5V comes It is 3 3V Power Suppl it can s It is connectin Power Supply Supply is Signal Th Switch R Input Reset of Signal RESET internal2. Now ETT has developed Chip AVR MCU No ATMEGA2560 and MAX3421 to make Board Arduino called ET MEGA2560 ADK it has USB Host that supports the connection between USB Device and Android Phone It has designed I O Pins including size according to the s it adds USB Host an is more convenient tandard of d improves some restrictions better Board Arduino Mega moreover for user to So it use this device ETT CO LTD WWW ETT CO TH User s Manual of Board Microcontroller ET MEGA2560 ADK ETT Specifications of Board ET MEGA2560 ADK e Use ATMEGA2560 as MCU on Board RUN by 16 MHz Frequency from Crystal Oscillator e Has 256 Kbyte 4 KByte is reserved for Bootloader 8 KByte SRAM 4 KByte EEPROM e 100 Support for developing program by C Language of Arduino according to Arduino MEGA e Use USB Bridge No FT232RL from FTDI and Over Current Protection to communicate and download Code into board without using any ext B Host MAX3421 Use On Board USI or Android ADK device Support ADK to develop program Androi from computer Programmer Device face with US ternal B Device to inter d Open Accessories development Kit it uses Google Open Accessories API with Android device tha
3. Host be developed by Google ADK Phone does not support ADK instead o USB Host Program Development ference Voltage without Reference ternal Reference Voltage in and MCU ATMEGA2560 free witho it can be modified to use with USB Host it uses Android Phone that has iE Signal Analog Reference ATMEGA2560 can be progr supplying any ext board user req Voltage user can s the range of 0 5V th the interfaces with USB Device or Android P No MAX3421 be interme Nowadays S to ut any charge to System V2 3 4 or higher on the other hand if An that ammed it can be 1 1V or ernal uires upply rough hone diate It r upport the and been t can droid it can use ADB of Microbridge It uses the format of developing program as same as general Board Arduino it has modified MAX3421 to be USB Host In this case device to interface USB HID Keyboard USB HID Mouse Android Program Development follows O develop program as It develops Accessories Accessories development Kit and Android Phone su developing sensor devices Phone These Android Phone Operating System of higher It develops Bridge emphasizes external interfaces Phone to send Arduino Analog versions API program through Library of
4. Si 12MHz FRB LOnF PE6 7 FUSI 18pF 18pF TXB0104 N N D o fh N N D PHONE USBLC6 2 2 10V 47uF 735V 1N5819 MAXIJ4 21 i i e 100uF LM2575 5U 1 1K w PHZ 053 100uF TXpP 1 Roxo TX3 RX3 15 TX2 16 RX2 8 1 8 4 e c 7 B 1 b ETT CO TH ET MEGA2560 ADK Falk I ju p 0k Se se Beggs 336uF 6U3 ATMEGA2560 0 4 rea ae Ee 16MNHz 22pF 22pF 14 219 320 CL 24 TX1 1 x4 DA 100uF 5U s MSOs SCRI Rs 4 My Ig a z Figure shows the structure of Board ET MEGA2560 ADK ETT CO LTD 3 WWW ETT CO TH User s Manual of Board Microcontroller ET MEGA2560 ADK ETT e No 1 It is Connector External Power Supply It is compatible with both AC and DC moreover there is Circuit Bridge Rectifier and Switching Regulate to reduce heat of IC Regulate when it is pulled very high current It can be used with 7 12V Input e No 2 It is Connector USB Host to inter
5. ate reserved tion UARTO It Input or Ou put RS232 Serial there are 54 tput according to some pins can be used as Port interfaces with USB FT232RL to upload Code into board moreover Bridge it can be used to transmit receive data between board and computer PC o D2 D13 It can be programmed as function 8BIT PWM in this case there are 14Pins o D14 It can be programmed as function TX3 for transmitting receiving data of UART3 o D15 It can be programmed as function RX3 to receive data of UART3 o D16 It can be programmed as function TX2 to transmit data of UART2 o D17 It can be programmed as function RX2 to receive data of UART2 o D18 It can be programmed as function RX1 to transmit data of UART1 o D19 It can be programmed as function RX1 to receive data of UARTI o D20 D21 It can be programmed as function SDA SCL of I2C Bus of I2C ETT CO LTD 5 WWW ETT CO TH User s Manual of Board Microcontroller ET MEGA2560 ADK AREF It is external supplies to MCU to choose internal Re Normally 2 56V or AVCC 5V Reference Voltage into supplying different ex this Pin AREF USB Host It it uses Chip USB between USB device creates Library connection Android Phone installed the Operating
6. is is ES ET y it runs when it controlled by 2 board and Signal DTR of from Circuit Regula g point of Board upply the maximum curren for G O inter facin te of f 500mA g with there are 2 sour If board is 500mA Poly Fuse to protect it can supply ting Configura this cas depending on se VIN It already The A0 A15 D0 D53 pins that the sett average supplied to the board through Jack VI e is DC processed of through Jack VI from Jack V It is Pin Analog it can receive Analog It is Pin TTL this and it N LM2575 5V 1A If from Port USI ces Port interfaced with USB and External 5V can Port USB tion for the maximum current o FT232RL N External S Rectifier and Filter as DC com voltage on N is voltage depends Input that upply bu 16Pin comes supply board uses Power Supply B directly from overload f 500mA from the from ere is In th t it has E 101 pletely hat has IT ADC Input as O 5VDC Digital Input Out can be used either special O Communicat OL It is ing program function DO D1 Moreover Function
7. interfaces with PB3 D50 of ATMEGA2560 e MAX3421E MOSI interfaces with PB2 D51 of ATMEGA2560 e MAX3421E SCK interfaces with PB1 D52 of ATMEGA2560 amp 11 16AM ET MEGA2560 ADK V1 6 Demo G ETT ET MEGA2560 ADK Demo pevear sla 0 ee i ETT CO LTD T WWW ETT CO TH
8. Microbridge on I O devices and Android device with Arduino with general and so on program this through ADK Google Android r improving ch as screen tha are contained in An capabilities can be used tha has been installed capabilities by ADB Android it be the communication Touch screen USB Device such as There are 2 methods to Open Open puts emphasizes on of Or droid with the Android version 2 3 4 and Debug puts tween Tt it can use An instruction or receive data such as Input ADC capabilities can be used with all that have been installed the Operating Digital I O PWM I2C Bus droid from Or as required Android System of Android version V1 5 and higher These Phone ETT CO LTD WWW ETT CO TH User s Manual of Board Microcontroller ET MEGA2560 ADK ETT The connection between MAX3421E and ATMEGA2560 of Board ET MEGA2560 ADK uses 7 Cables as follows e MAX3421E RESET interfaces with PJ2 of ATMEGA2560 e MAX3421E GPX interfaces with PJ3 of ATMEGA2560 e MAX3421E SS interfaces with PH7 of ATMEGA2560 e MAX3421E INT interfaces with PE6 of ATMEGA2560 e MAX3421E MISO
9. User s Manual of Board Microcontroller ET MEGA2560 ADK ETT ET MEGA2560 ADK synir mM ia Because Arduino that is the development project on AVR MCU as Open Source has been published it is popular and widespread shortly For Software it has been continued developing and nowadays September 2011 Program Arduino has For Hardware it In the past been improved to be version arduino 0022 has been continued improving as same as Software it only supports in developing program with small Chip MCU 28PIN such as ATMEGA8 ATMEGA8 8 ATMEGA1 68 ATMEGA328 and nowadays it can support in developing program with larger Chip MCU 100PIN such as ATMEGA1280 ATMEGA2560 respectively Recently it has developed capabilities of Arduino on AVR to connect with USB Host devices so Arduino can be modified to connect with various types of USB Device such as USB HID Keyboard or USB HID Mouse Moreover it is more interesting because this Arduino can be modified to interface with smart phones that use Operating System of Android This Operating System is Open Source from Google a large web browser of the world called Android Phone In this case user can communicate and command Board Arduino through Android Phone well This is a step of developing Arduino on AVR that makes this Arduino more interesting and outstanding
10. face with USB devices e No 3 It is Connector USB Device to communicate with uses FT232RL as USB Bridge to connect between computer PC and MCU on board Moreover it can use Power Suppl from Port USB There is 500mA Poly Fuse to protect Port USB from overload It is more special because there is circuit to check source of Power Supply it can alternate source of Power Supply between Port USB and External Power Supply automatically If board is not interfaced with External Power Supply board starts using power from Port USB instantly on the other hand if it computer PC i KR A interfaces with External Power Supply it alternate to use power from External Power Supply automatically o LED VvCC It shows operating status when it is supplying power into board o LED VEXT It shows operating status when it is supplying power from External Power Supply e No 4 It is LED VEXT to display operating status when it is supplying power from External Power Supply e No 5 It is LEC VCC to display operating status of Power Supply VCC of board When board uses Power Supply from External Power Supply it makes both of LED VEXT and LED VCC bright ON on the other hand if board uses Power Supply from Port USB only VCC is bright ON
11. t has been installed Android Operating Systems V2 3 4 or higher Support Android Deb ug Bridge ADB to develop program it uses Library of Microbridge with Android device that has been installed Android Operating Systems V1 5 or higher e Has 54Pin Digital I O as follows 16 Pin Analog Input 10BIT 16 CH ADC 14 PWM outputs 4 UART Hardware Serial Port as TTL Logic 1 Hardware TWI 12C n Hardware SPI up to 8Mbps e Size of PCB Board and position of Pin Connectors accord with Arduino MEGA so it can be used with all Board Shields that are made to support Board Arduino Mega This PCB Board Size is 5 3cm x 10 2cm e Support External Supply that is both 7 12V AC and DC It uses 1A Switching Regulate LM2575 5V to reduce heat when using very high current It can use Power Supply from Port USB if using current is not higher than 500mA In this case there is circuit to choose Power Supply automatically it disables Power Supply from USB automatically when it is connected with external Power Supply ETT CO LTD 2 WWW ETT CO TH User s Manual of Board Microcontroller ET MEGA2560 ADK Structure of Board ET MEGA2560 ADK ETT Fuse lt S FT232R xja jx lt
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