Waveshare OpenM128 ATmega128 AVR MCU Package B

Artikelnummer: WS0301B

HAN: OpenM128 Package B

Kategorie: AVR

109,47 €

inkl. 19% USt.,

knapper Lagerbestand

Lieferzeit: 8 bis 10 Tage



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

ATmega128 development board

OpenM128 is an AVR development board that features a ATmega128 device as the microcontroller. It supports further expansion with various optional accessory boards for specific application. The modular and open design makes it the ideal for starting application development with AVR microcontroller.

What's On Board

ATmega128 development board on board resource
  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
  25. ISP6 interface: for programming
  26. ISP10 interface: for programming
  27. JTAG interface: for programming/debugging
  28. LEDs jumper
  29. User keys jumper
  30. Joystick jumper
  31. PS/2 jumper
  32. LCD selection jumper
    • short the jumper to use dot matrix LCD
    • open the jumper to use multi-color LCD
  33. VCC selection jumper
  34. Crystal selection jumper

For jumper 28-31:

  • short the jumper to connect to I/Os used in example code;
  • open the jumper to connect to other custom pins via jumper wires.

Note: The OpenM128 does NOT integrate any debugging function, a debugger is required.

Debugging/Programming Interfaces

The figures below show the header pinouts of JTAG, ISP10, ISP6 interface

Figure 1. 10-pin JTAG header pinout
10-pin JTAG header pinout
Figure 2. 10-pin ISP header pinout
10-pin ISP header pinout
Figure 3. 6-pin ISP header pinout
6-pin ISP header pinout

Development Resources

The User Guide CD includes development resources listed as follow:

  • Related Software (AVR Studio4, etc.)
  • Demo Code (GCC AVR examples)
  • Schematic (PDF)
  • AVR Development Documentations (Datasheets etc.)

Package Contains

The "Standard Package" and "Accessory Boards Package" below are included.

Standard Package

  1. OpenM128 development board x 1
  2. 4-pin wire x 2
  3. 2-pin wire x 2
  4. USB power cable x 1
  5. User guide CD x 1

Accessory Boards Package

  1. PL2303 USB UART Board (mini) x 1
  2. 2.2inch 320x240 Touch LCD (A) x 1
  3. AD Keypad (for testing embedded ADC) x 1
  4. FT245 USB FIFO Board (mini) (16 I/Os) x 1
  5. AT45DBXX DataFlash Board (SPI) x 1
  6. PCF8563 RTC Board (I2C) x 1
  7. NRF24L01 RF Board (B) (SPI) 2pcs x 1
  8. DS18B20 (ONE WIRE) x 1
  9. LCD12864 (3.3V Blue Backlight) (SPI) x 1
  10. 8 SEG LED Board (16 I/Os) x 1
  11. 8 Push Buttons (8 I/Os) x 1
  12. USB type A plug to mini-B plug cable x 1

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