The STK128+ is a complete, cost-effective development board for the ATmega128. It is designed to give designers a quick start to develop code on ATmega128 MCU and makes them develope prototype device easily.
The ATmega128 chip is mounted on a device board, which can be separated from the mother board. Hence, easily changing MCU is supported. The ATmega128 chip is in TQFP64 package and will randomly be ATmega128-16AU or ATmega128L-8AU or ATmega128A-AU.
The STK128+ Standard package comes with an ATmega128 device board, while the STK128+ Premium package comes with the standard package, an additional spare ATmega128 device board, and an Experiment Fittings Pack.
Powered from external 5V power supply
Jumper for configuring voltage level to be applied, 5V/3.3V
ATmega128 (TQFP64), MCU, mounted on the device board
AMS1117-3.3, on board regulator
MAX3232, True RS232 Transceivers
Two RS232 connector for UART0 and UART1, DB9 standard
Guaranteed to operate under 3V level supply thanks to the MAX3232
UART0 and UART1 jumpers, short the jumper to connect UART to AVR MCU, open the jumper to vacate the I/O ports.
6-pin / 10-pin ISP port
Human to Machine Interface
RESET button, used to reset the MCU
Power indicator LED
8 surface mounted LEDs, can be used as I/O status indicator
8 Push-buttons, for analog input
Crystal configurable, there is a jumper for selecting on board 7.3728M crystal or external crystal mounted via the socket
All the MCU pins are accessible on expansion connectors for further expansion
All the pins are marked on the board. These marks describe the function of each pin