ATMEGA324P-20AU 8-bit ATMega AVR® microcontroller, 32 KB, 20 MHz, TQFP-44

ATmega164P/V/324P/V/644P/V , megaAVR®

Features - High-performance, Low-power AVR® 8-bit Microcontroller - Advanced RISC Architecture - 131 Powerful Instructions - Most Single-clock Cycle Execution - 32 × 8 General Purpose Working Registers - Fully Static Operation - Up to 20 MIPS Throughput at 20 MHz - On-chip 2-cycle Multiplier - High Endurance Non-volatile Memory segments - 16K/32K/64K Bytes of In-System Self-programmable Flash program memory - 512B/1K/2K Bytes EEPROM - 1K/2K/4K Bytes Internal SRAM - Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM - Data retention: 20 years at 85?C/100 years at 25?C(1) - 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 - 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 Prescalers and Compare Modes - One 16-bit Timer/Counter with Separate Prescaler, Compare Mode + 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 (ATmega164P/324P/644P) - 44-pad DRQFN (ATmega164P) - Operating Voltages - 1.8V - 5.5V for ATmega164PV/324PV/644PV - 2.7V - 5.5V for ATmega164P/324P/644P - Speed Grades - ATmega164PV/324PV/644PV: 0 - 4 MHz @ 1.8V - 5.5V, 0 - 10 MHz @ 2.7V - 5.5V - ATmega164P/324P/644P: 0 - 10 MHz @ 2.7V - 5.5V, 0 - 20 MHz @ 4.5V - 5.5V - Power Consumption at 1 MHz, 1.8V, 25°C for ATmega164PV/324PV/644PV - Active: 0.4 mA - Power-down Mode: 0.1 µA - Power-save Mode: 0.6 µA (Including 32 kHz RTC)