The ATMEGA128 Module (F128B) is a compact, pluggable, and versatile development module based on the ATMEGA128A microcontroller, preprogrammed with an Arduino-compatible bootloader. Designed for ease of use and rapid prototyping, this module is ideal for breadboard applications, embedded system projects, and educational use.

All I/O ports and power pins are conveniently routed to standard 2.54 mm pitch headers, allowing quick and reliable connections. The onboard CH340 USB-to-Serial TTL converter enables direct programming and serial communication via USB, eliminating the need for external programmers. Additional features such as onboard LEDs, reset circuitry, and filtered analog power make this module a reliable choice for both digital and analog applications.

Key Features

• Based on ATMEGA128A microcontroller

• Arduino bootloader preloaded

• All I/O ports accessible via 2.54 mm pin headers

• Multiple power and special-function pins:

  • 5× GND, 2× VCC, AVCC, AREF, PEN, RESET

• LC-filtered AVCC for stable analog circuit operation

• 16 MHz crystal oscillator

• Onboard CH340 USB-to-TTL converter for programming and serial communication

• USB Type-B micro connector

• Green SMD LED for power indication

• Red SMD LEDs for TX and RX activity

• Reset push button

• Supports 10-pin IDC and 6-pin ISP programming headers

Specifications