ATMEGA649A-MU

The ATMEGA649A-MU is a high-performance, low-power 8-bit AVR microcontroller from Microchip Technology. It features an advanced RISC architecture with 130 instructions, most of which execute in a single clock cycle, achieving up to 16 MIPS throughput at 16 MHz. The device includes 64 KB of in-system self-programmable Flash memory, 4 KB of internal SRAM, and 2 KB of EEPROM with high endurance (10,000 write/erase cycles for Flash, 100,000 for EEPROM).

This microcontroller offers a rich set of peripherals including two 8-bit and one 16-bit timer/counters, a 4-channel PWM, an 8-channel 10-bit ADC, an on-chip analog comparator, and a 4x25 segment LCD driver. It also supports multiple serial communication interfaces such as SPI, UART/USART, and USI. The device includes a JTAG interface for boundary-scan and on-chip debug, as well as programmable brown-out detection and a watchdog timer.

The ATMEGA649A-MU is supplied in a 64-VFQFN exposed pad package (64-QFN, 9x9 mm) and operates over a voltage range of 1.8V to 5.5V and a temperature range of -40°C to +85°C. It supports five sleep modes for power-sensitive applications and includes Atmel QTouch capacitive touch sensing support for up to 64 channels.