ATMEGA645-16AU

The ATMEGA645-16AU is a high-performance, low-power 8-bit AVR microcontroller from Microchip Technology. It is built around an advanced RISC architecture with 130 powerful instructions, most of which execute in a single clock cycle, and 32 x 8 general-purpose working registers. The device can achieve up to 16 MIPS of throughput at a 16MHz clock frequency.

The microcontroller provides 64KB of in-system self-programmable Flash memory, 4KB of internal SRAM, and 2KB of EEPROM. It offers 10,000 write/erase cycles for Flash and 100,000 cycles for EEPROM, along with data retention of 20 years at 85°C and 100 years at 25°C.

Peripheral features include two 8-bit timer/counters, one 16-bit timer/counter, four PWM channels, an 8-channel 10-bit ADC, a programmable serial USART, a master/slave SPI interface, a Universal Serial Interface with start condition detector, a programmable watchdog timer, and an on-chip analog comparator. The device also supports capacitive touch sensing through the Atmel QTouch library and provides a JTAG interface for boundary scan and debug.

The ATMEGA645-16AU operates with a supply voltage from 2.7V to 5.5V and is specified for an industrial temperature range of -40°C to +85°C. It is housed in a 64-TQFP (14x14mm) surface-mount package and has 53 programmable I/O lines in this configuration.