This product is a high-performance, low-power AVR® 8-bit microcontroller
The ATmega644/V is a low‑power 8‑bit AVR microcontroller with up to 64 KB of in‑system programmable Flash, 2 KB EEPROM, 4 KB SRAM and 32 programmable I/O lines. It offers a rich peripheral set including multiple timers, PWM channels, an 8‑channel 10‑bit ADC, USARTs, SPI, I²C, JTAG and various power‑saving modes.
The document provides a block diagram, pin configurations for PDIP, TQFP and QFN/MLF packages, a register summary, and revision notes. Contact and support information for Atmel is listed at the end of the manual.
| Flash program memory | 64 KB |
|---|---|
| EEPROM | 2 KB |
| SRAM | 4 KB |
| Programmable I/O lines | 32 |
| PWM channels | 6 |
| ADC channels | 8‑channel, 10‑bit |
| Speed grade (ATmega644V) | 0‑4 MHz @ 1.8‑5.5 V, 0‑10 MHz @ 2.7‑5.5 V |
The device includes 64 KB of in‑system self‑programmable Flash memory.
It provides 32 programmable I/O lines.
It has an 8‑channel, 10‑bit analog‑to‑digital converter.