ATmega32A megaAVR Data Sheet Introduction The ATmega32A is a low power, CMOS 8-bit microcontrollers based on the AVR enhanced RISC archi- tecture. The ATmega32A is a 40/44-pins device with 32 KB Flash, 2 KB SRAM and 1 KB EEPROM. By exe- cuting instructions in a single clock cycle, the devices achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing the system designer to optimize power consump- tion versus processing speed. 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 16MIPS Throughput at 16MHz On-chip 2-cycle Multiplier High Endurance Non-volatile Memory segments 32Kbytes of In-System Self-programmable Flash program memory 1024Bytes EEPROM 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 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 QTouch Library Support Capacitive touch buttons, sliders and wheels QTouch and QMatrix acquisition Up to 64 sense channels 2018 Microchip Technology Inc. Data Sheet Complete DS40002072A-page 1ATmega32A Peripheral Features 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 Four PWM Channels 8-channel, 10-bit ADC 8 Single-ended Channels 7 Differential Channels in TQFP Package Only 2 Differential Channels with Programmable Gain at 1x, 10x, or 200x Byte-oriented Two-wire Serial Interface Programmable Serial USART Master/Slave SPI Serial Interface Programmable Watchdog Timer with Separate On-chip Oscillator On-chip Analog Comparator 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 Operating Voltages 2.7V - 5.5V Speed Grades 0 - 16MHz Power Consumption at 1MHz, 3V, 25C Active: 0.6mA Idle Mode: 0.2mA Power-down Mode: < 1A 2018 Microchip Technology Inc. Data Sheet Complete DS40002072A-page 2