STK200 compatible ICSP 5x2 pin connector for in-circuit programming with AVR-PG1B or AVR-PG2B
RS232 Tx, Rx interface with MAX232 IC on socket
10MHz crystal on socket (user can replace with any value)
reset IC ZM33064
reset button
general purpose push button
status LED connected to PB7 via removable jumper
DIL20 microcontroller socket
selectable +3.3V / +5V power supply voltage regulator
extension pin headers for each uC pin
four mounting holes 3.3 mm (0.13")
FR-4, 1.5 mm (0,062"), green soldermask, white silkscreen component print
dimensions 100x80 mm (3.9x3.15")