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ATMEGA32A-AU

8-bit AVR MCU, 32KB Flash, 2KB SRAM, 1KB EE, 16MHz, 32 I/O, JTAG, TQFP-44

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Manufacturer Part：

ATMEGA32A-AU

Package：

TQFP-44 (10 x 10 x 1.0mm)

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Description

Product Overview

The ATMEGA32A-AU from Microchip Technology is a high-performance, low-power 8-bit AVR RISC microcontroller with 32KB ISP Flash, 1KB EEPROM, and 2KB SRAM in a TQFP-44 package. Operating at up to 16MHz with 2.7V to 5.5V supply, it features 32 I/O pins, JTAG interface, 8-channel 10-bit ADC, and multiple communication interfaces.

Key Specifications

Flash Memory 32KB
SRAM 2KB
EEPROM 1KB
Clock Speed Up to 16MHz
I/O Pins 32
ADC 8-channel 10-bit
Communication USART, SPI, TWI (I2C)
Timers 2x 8-bit, 1x 16-bit
Supply Voltage 2.7V to 5.5V
Package TQFP-44 (10 x 10mm)
Operating Temperature -40°C to +85°C

Features

  • 131 powerful instructions, most single-clock cycle
  • 32 x 8 general purpose working registers
  • Up to 16 MIPS throughput at 16MHz
  • On-chip 2-cycle multiplier
  • JTAG interface for debug and programming
  • 4 PWM channels
  • 8-channel 10-bit ADC with differential input
  • Programmable watchdog timer
  • 6 software selectable power saving modes
  • QTouch library support

Applications

  • Industrial control systems
  • Motor control applications
  • Consumer electronics
  • Home automation
  • Embedded networking

The ATMEGA32A-AU from Microchip Technology is a low-power CMOS 8-bit AVR RISC-based microcontroller featuring 32KB of in-system programmable Flash, 1KB EEPROM, and 2KB SRAM. With 32 programmable I/O lines, JTAG interface for on-chip debugging and programming, 8-channel 10-bit ADC with optional differential input, four PWM channels, and multiple communication interfaces (USART, TWI, SPI), it provides a versatile solution for a wide range of embedded control applications.

The ATMEGA32A is based on the AVR enhanced RISC architecture with 131 instructions, most executing in a single clock cycle. The 32 general-purpose registers are directly connected to the ALU, allowing two independent registers to be accessed in one instruction cycle. The Harvard architecture separates program memory (Flash) from data memory (SRAM). The JTAG interface enables boundary-scan testing and on-chip debugging. Six sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) allow fine-grained power management for battery-operated applications.

Pin Name Type Function
1-8 PA0-PA7 I/O Port A: ADC / digital I/O
9-16 PB0-PB7 I/O Port B: SPI / Timer / ADC / XTAL
17-24 PC0-PC7 I/O Port C: JTAG / TWI digital I/O
25-32 PD0-PD7 I/O Port D: USART / INT / Timer
33 RESET Input Active-low reset
34 VCC Power Digital supply
35 GND Power Ground
36 AVCC Power ADC supply
37 AREF Reference ADC reference
  • Industrial process controllers with JTAG debug
  • Motor drive and servo control systems
  • Consumer appliance control boards
  • Home automation thermostats and sensors
  • Embedded networking bridge devices
Manufacturer Part Number Package Notes
Microchip ATMEGA64A-AU TQFP-64 64KB Flash upgrade
Microchip ATMEGA32A-MU QFN-44 Same specs, QFN package
Microchip ATMEGA324P-20AU TQFP-44 32KB Flash, picoPower
ST STM32F103C8T6 LQFP-48 ARM Cortex-M3 alternative
Renesas R5F563NBDDFP TQFP-64 RL78 32KB Flash alternative
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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