Part # ATmega644 datasheet

Part Manufacturer: Atmel

Atmel

Part Description: ATmega644


Part Details:

Features· High-performance, Low-power AVR® 8-bit Microcontroller· Advanced RISC Architecture ­ 131 Powerful Instructions ­ Most Single-clock Cycle Execution­ 32 x 8 General Purpose Working Registers­ Fully Static Operation­ Up to 20 MIPS Throughput at 20 MHz · High Endurance Non-volatile Memory segments ­ 64K Bytes of In-System Self-programmable Flash program memory­ 2K Bytes EEPROM­ 4K Bytes Internal SRAM 8-bit ­ Write/Erase cyles: 10,000 Flash/100,000 EEPROM(1)(3)­ Data retention: 20 years at 85°C/100 years at 25°C(2)(3) Microcontroller ­ Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program with 64K Bytes True Read-While-Write Operation ­ Programming Lock for Software Security In-System · JTAG (IEEE std. 1149.1 Compliant) Interface ­ Boundary-scan Capabilities According to the JTAG Standard­ Extensive On-chip Debug Support Programmable ­ Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface · Peripheral Features Flash ­ 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 ATmega644/V ­ Six PWM Channels­ 8-channel, 10-bit ADC Differential mode with selectable gain at 1x, 10x or 200x ­ Byte-oriented Two-wire Serial Interface Preliminary ­ 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 · Special Microcontroller Features ­ 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 · I/O and Packages ­ 32 Programmable I/O Lines­ 40-pin PDIP, 44-lead TQFP, and 44-pad QFN/MLF · Speed Grades ­ ATmega644V: 0 - 4MHz @ 1.8 - 5.5V, 0 - 10MHz @ 2.7 - 5.5V­ ATmega644: 0 - 10MHz @ 2.7 - 5.5V, 0 - 20MHz @ 4.5 - 5.5V · Power Consumption at 1 MHz, 3V, 25°C ­ Active: 240 µA @ 1.8V, 1MHz­ Power-down Mode: 0.1 µA @ 1.8V Notes: 1. Worst case temperature. Guaranteed after last write cycle.2. Failure rate less than 1 ppm.3. Characterized through accelerated tests. 2593M­AVR­08/07 1. Pin Configurations Figure 1-1. Pinout ATmega644 PDIP (PCINT8/XCK0/T0) PB0 PA0 (ADC0/PCINT0) (PCINT9/CLKO/T1) PB1 PA1 (ADC1/PCINT1) (PCINT10/INT2/AIN0) PB2 PA2 (ADC2/PCINT2) (PCINT11/OC0A/AIN1) PB3 PA3 (ADC3/PCINT3) (PCINT12/OC0B/SS) PB4


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ATmega644.pdf Datasheet