ATmega164A/PA/324A/PA/644A/PA/1284/P megaAVR Data Sheet Introduction The ATmega164A/PA/324A/PA/644A/PA/1284/P is a low power, CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. The ATmega164A/PA/324A/PA/644A/PA/1284/P is a 40/49-pins device ranging from 16 KB to 128 KB Flash, with 1 KB to 16 KB SRAM, 512 Bytes to 4 KB EEPROM. By executing instructions in a single clock cycle, the devices achieve CPU throughput approaching one million instruc- tions per second (MIPS) per megahertz, allowing the system designer to optimize power consumption ver- sus processing speed. Features High-performance, low-power 8-bit AVR Microcontroller Advanced RISC architecture 131 powerful Instructions most single-clock cycle execution 32 8 general purpose working registers Fully static operation Up to 20MIPS throughput at 20MHz On-chip 2-cycle multiplier High endurance non-volatile memory segments 16/32/64/128KBytes of In-System Self-programmable Flash program memory 512/1K/2K/4KBytes EEPROM 1/2/4/16KBytes 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 QTouch Library Support Capacitive touch buttons, sliders and wheels QTouch and QMatrix acquisition 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 2020 Microchip Technology Inc. Data Sheet Complete DS40002070B-page 1ATmega164A/PA/324A/PA/644A/PA/1284/P Peripheral Features Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes One/two 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 Byte-oriented Two-wire Serial Interface Two 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, 44-pad VQFN/QFN/MLF 44-pad DRQFN 49-ball VFBGA Operating Voltages 1.8 - 5.5V Speed Grades 0 - 4MHz 1.8 - 5.5V 0 - 10MHz 2.7 - 5.5V 0 - 20MHz 4.5 - 5.5V Power Consumption at 1MHz, 1.8V, 25 C Active: 0.4mA Power-down Mode: 0.1A Power-save Mode: 0.6A (Including 32kHz RTC) Note: 1. See Data retention on page 17 for details. 2020 Microchip Technology Inc. Data Sheet Complete DS40002070B-page 2