ATMEGA32A Datasheet PDF - ATMEL

8-bit AVR® Microcontroller with 32K Bytes In-System Programmable Flash

●Overview

●The ATmega32A is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC

●architecture. By executing powerful instructions in a single clock cycle, the ATmega32A achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

●Features

●• High-performance, Low-power AVR® 8-bit Microcontroller

●• Advanced RISC Architecture

●– 131 Powerful Instructions – Most Single-clock Cycle Execution

●– 32 x 8 General Purpose Working Registers

●– Fully Static Operation

●– Up to 16 MIPS Throughput at 16 MHz

●– On-chip 2-cycle Multiplier

●• High Endurance Non-volatile Memory segments

●– 32K Bytes of In-System Self-programmable Flash program memory

●– 1024 Bytes EEPROM

●– 2K Byte 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, and Capture Mode

●– Real Time Counter withSeparate 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

●– 2.7 - 5.5V for ATmega32A

●• Speed Grades

●– 0 - 16 MHz for ATmega32A

●• Power Consumption at 1 MHz, 3V, 25°C for ATmega32A

●– Active: 0.6 mA

●– Idle Mode: 0.2 mA

●– Power-down Mode: < 1 µA