ATmega48A/PA/88A/PA/168A/PA/328/P megaAVR Data Sheet Introduction The ATmega48A/PA/88A/PA/168A/PA/328/P is a low power, CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing instructions in a single clock cycle, the devices achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing the sys- tem designer to optimize power consumption versus processing speed. Features High Performance, Low Power 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 4/8/16/32KBytes of In-System Self-Programmable Flash program memory 256/512/512/1KBytes EEPROM 512/1K/1K/2KBytes 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 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 2020 Microchip Technology Inc. Data Sheet Complete DS40002061B-page 1ATmega48A/PA/88A/PA/168A/PA/328/P Real Time Counter with Separate Oscillator Six PWM Channels 8-channel 10-bit ADC in TQFP and VQFN package Temperature Measurement 6-channel 10-bit ADC in SPDIP Package Temperature Measurement Programmable Serial USART Master/Slave SPI Serial Interface 2 Byte-oriented 2-wire Serial Interface (Philips I C compatible) 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 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 23 Programmable I/O Lines 28-pin SPDIP, 32-lead TQFP, 28-pad VQFN and 32-pad VQFN Operating Voltage: 1.8 - 5.5V Temperature Range: -40C to 85C Speed Grade: 0 - 4MHz 1.8 - 5.5V, 0 - 10MHz 2.7 - 5.5.V, 0 - 20MHz 4.5 - 5.5V Power Consumption at 1MHz, 1.8V, 25C Active Mode: 0.2mA Power-down Mode: 0.1A Power-save Mode: 0.75A (Including 32kHz RTC) Note: 1. See Data Retention on page 17 for details. 2020 Microchip Technology Inc. Data Sheet Complete DS40002061B-page 2