ATMEGA644-20PU DIP

Microcontroller based on the AVR RISC architecture.

Max CPU operating frequency: 20MHz

Flash: 64kB

RAM: 4kB

EEPROM: 2kB

Features

* JTAG (IEEE std. 1149.1 compliant) Interface

- Boundary-scan Capabilities According to the JTAG Standard

- Extensive On-chip Debug Support

- Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface

* Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes

* One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode

* Real Time Counter with Separate Oscillator

* Six PWM Channels

* 8-channel, 10-bit ADC

* Byte-oriented Two-wire Serial Interface

* One Programmable Serial USART

* Master/Slave SPI Serial Interface

* Programmable Watchdog Timer with Separate On-chip Oscillator

* On-chip Analog Comparator

* Interrupt and Wake-up on Pin Change

* Power-on Reset and Programmable Brown-out Detection

* Internal Calibrated RC Oscillator

* External and Internal Interrupt Sources

* Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby

* 32 Programmable I/O Lines

* Speed Grades: 0 - 10 MHz @ 2.7V - 5.5V, 0 - 20 MHz @ 4.5V - 5.5V

* Temperature Range: Industrial (-40° to +85°C)