8-bit AVR Microcontrollers ATmega644P/V DATASHEET COMPLETE Introduction The Atmel picoPower ATmega644P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega644P achieves throughputs close to 1MIPS per MHz. This empowers system designer to optimize the device for power consumption versus processing speed. Feature High Performance, Low Power Atmel AVR 8-Bit Microcontroller Family 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 20MHz On-chip 2-cycle Multiplier High Endurance Non-volatile Memory Segments 64KBytes of In-System Self-Programmable Flash Program Memory 2KBytes EEPROM 4KBytes Internal SRAM Write/Erase Cycles: 10,000 Flash/100,000 EEPROM (1) Data Retention: 20 Years at 85C/100 Years at 25C Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation Programming Lock for Software Security Atmel QTouch Library Support Capacitive Touch Buttons, Sliders and Wheels QTouch and QMatrix acquisition Atmel-42744B-ATmega644P/V Datasheet Complete-08/2016 Up to 64 Sense Channels 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 Peripheral Features Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode 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 Differential Mode with Selectable Gain at 1, 10 or 200 2 One Byte-oriented 2-wire Serial Interface (Philips I C compatible) Two Programmable Serial USART One 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 44-pad VQFN/QFN Operating Voltage: 1.8 - 5.5V for ATmega644PV 2.7 - 5.5V for ATmega644P Speed Grades ATmega644PV: 0 - 4MHz 1.8V - 5.5V 0 - 10MHz 2.7V - 5.5V ATmega644P: 0 - 10MHz 2.7V - 5.5V 0 - 20MHz 4.5 - 5.5V Power Consumption at 1MHz, 1.8V, 25C Active Mode: 0.4mA Power-down Mode: 0.1A Power-save Mode: 0.6A (Including 32kHz RTC) Atmel ATmega644P/V DATASHEET 2 Atmel-42744B-ATmega644P/V Datasheet Complete-08/2016