Waveshare OpenM128 Standard AVR Development Board

Waveshare OpenM128 Standard AVR Development Board

AVR development board designed for ATMEL mega AVR, features the ATmega128 MCU, and integrates various standard interfaces, pretty easy for peripheral expansions.

User Manual / Datasheet / Example Codes Etc.

Package Includes 

• OpenM128 development board x 1
• 4-pin wire x 2
• 2-pin wire x 2
• USB power cable x 1

What's On Board

1. ATmega128A-AU:the high performance AVR MCU which features:

• Core: AVR 8-bit RISC
• Operating Frequency: 16MHz Max
• Operating Voltage: 2.7-5.5V
• Package: TQFP64
• I/Os: 53
• Memories: 128kB Flash, 4kB SRAM, 4kB EEPROM
• Communication Interfaces: 1 x SPI, 1 x TWI (I2C), 2 x USART, 8 x PWM, 8 x ADC
• Debugging/Programming: JTAG/ISP

2. AMS1117-3.3: 3.3V voltage regulator

3. Power switch

4. Power indicator

5. LEDs: convenient for indicating I/O status and/or program running state

6. User keys: for I/O input test and/or program control

7. Joystick: five positions

8. Reset button

9. Crystal oscillator: 7.3728M & 32.768K

10. Adjustable resistor: for LCD12864 contrast adjustment

11. 16 I/Os interface: for connecting accessory boards which using I/O control, such as FT245 USB FIFO, 8 SEG LED, etc.

12. 8 I/Os interface | 8-bit AD interface

• for connecting accessory boards which using I/O control, such as 8 Push Buttons, Motor, etc.
• there's also 8-bit AD interface can be used for AD testing

13. 6 I/Os interface | USART0+AC+PWM3 interface

• for connecting USART peripherals, such as RS232, RS485, USB TO UART, etc.
• for connecting accessory boards which using PWM interface, also supports analog comparison through AC interface

14. SPI+PWM0+T/C interface

• for connecting SPI peripherals, such as DataFlash (AT45DBxx), SD card, MP3, etc.the SPI interface includes additional I/O pins (PWM, T/C as regular I/O) which can be used as controlling pins
• for connecting accessory boards which using PWM interface, also supports frequency calculation through T/C interface

15. I2C+PWM0/1 interface

• for connecting I2C peripherals, such as I/O expander (PCF8574), EEPROM (AT24Cxx), etc.the I2C interface includes additional I/O pins (PWM as regular I/O) which can be used as controlling pins
• for connecting accessory boards which using PWM interface

16. USART1 interface: for connecting USART peripherals, such as RS232, RS485, USB TO UART, etc.

17. 1-WIRE interface: for connecting 1-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration          number (DS2401), etc.

18. PS/2 interface: for connecting PS/2 keyboard and/or mouse

19. Graphic multi-color LCD interface: for connecting 2.2 inch multi-color touch screen LCD which using SPI control

20. Graphic dot matrix LCD interface: for connecting dot matrix LCD, such as LCD12864 (3.3V blue backlight)

21. 5V DC jack

22. Custom crystal socket

23. VCC power input/output: usually used for power supply output, and/or common ground with other application board

24. MCU pins connector: all the MCU pins are accessible on expansion connectors for further expansion

24. ISP6 interface: for programming

26. ISP10 interface: for programming

27. JTAG interface: for programming/debugging

28. LEDs jumper

• User keys jumper
• Joystick jumper

29. PS/2 jumper

30. LCD selection jumper