Atmel ATmega128 development board.

Plugging this board into a usbtiny or usbasp connected to a RPi may crash the Pi due to inrush current. It is sensible to utilise a programmer which can disable (or not supply) target power and power this board using its AC input.

avrdude -c usbtiny -p m128

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e9702 (probably m128)

avrdude: safemode: Fuses OK (E:FF, H:09, L:CF)

avrdude done.  Thank you.

Male socket

    1       2 GND
    3       4 5V
KEY 5       6 
    7 GND   8 
    9      10 GND

Female plug

   2 GND    1 TCK
   4 5V     3 TDO
   6 RESET  5 TMS KEY
   8 NC     7 5V
  10 GND    9 TDI

DB9 socket

5 3 3 2 1
 9 8 7 6

1 NC
2 TXD
3 RXD
4 NC
5 GND
6 NC
7 NC
8 NC
9 NC

Product page

User manual

Fuse calculator

ATmega128 datasheet