AVR Butterfly User Guide describes the features and usage of AVR Butterfly evaluation kit.
The AVR Butterfly Evaluation Kit is a compact development board that showcases the features of Atmel's ATmega169 microcontroller. It includes an LCD display, joystick, piezo element, temperature and light sensors, a 4 Mbit DataFlash, and various communication interfaces such as UART, SPI, USI and JTAG.
The manual covers how to operate the pre‑programmed demo application, use the joystick and menu system, program the device via bootloader or JTAG, connect to a PC, and troubleshoot common issues. Technical specifications, support information, schematics and a bill of materials are also provided.
| Physical dimensions | 45 × 67 × 14 mm |
|---|---|
| Weight | 28 g |
| Operating temperature range | 0 °C – 50 °C |
| External power supply voltage | 3.1 V – 4.5 V |
| Temperature measurement accuracy | ±1 °C |
| Voltage reading accuracy | ±0.1 V |
The LCD automatically turns off after 30 minutes of inactivity by default.
The kit provides UART, SPI, USI, JTAG, and an RS‑232 level‑converter for PC communication.