The ATMEGA32A is a low power, CMOS 8-bit microcontrollers based on the AVR® enhanced RISC architecture. The ATMEGA32A is a 40/44-pins device with 32 KB Flash, 2 KB SRAM and 1 KB EEPROM. By executing 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 consumption versus processing speed. Features:- • High-performance, Low-power Atmel AVR 8-bit Microcontroller • Advanced RISC Architecture - 131 powerful instructions – most single clock cycle execution - 32 × 8 General Purpose Working Registers Peripheral Control Registers - Fully Static Operation - Up to 16MIPS Throughput at 16MHz - On-chip 2-cycle Multiplier • High Endurance Non-volatile Memory segments - 32K bytes of in-system self-programmable flash program memory - 1024Bytes EEPROM - 2Kbytes 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 prescaler and compare mode – 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 – Programmable serial USART – Master/Slave SPI Serial Interface – Programmable Watchdog Timer with On-chip Oscillator – On-chip Analog Comparator – Byte Oriented 2-wire Serial Interface • 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 voltage – 2.7V - 5.5V • Speed Grades – 0 - 16MHz • Power Consumption at 1MHz, 3V, 25°C ̶  Active: 0.6mA ̶  Idle Mode: 0.2mA – Power-down Mode: < 1µA Specification:- Parameters Values Program Memory Type Flash Program Memory Size (KB) 32 CPU Speed (MIPS/DMIPS) 16 SRAM (B) 2,048 Data EEPROM/HEF (bytes) 1024 Digital Communication Peripherals 1-UART, 2-SPI, 1-I2C Capture/Compare/PWM Peripherals 1 Input Capture, 1 CCP, 6PWM Timers 2 x 8-bit, 4 x 16-bit Number of Comparators 1 Temperature Range (°C) -40 to 85 Operating Voltage Range (V) 2.7 to 5.5 Pin Count 44 Related Document:- ATMEGA32A SMD Data Sheet
