Microchip Technology ATMEGA32A-AU
| Parameters | |
|---|---|
| Series | AVR® ATmega |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 44-TQFP |
| Mfr | Microchip Technology |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Supplier Device Package | 44-TQFP (10x10) |
| Speed | 16MHz |
| Oscillator Type | Internal |
| Core Processor | AVR |
| RAM Size | 2K x 8 |
| Number of I/O | 32 |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V |
| EEPROM Size | 1K x 8 |
| Program Memory Type | FLASH |
| Connectivity | I²C, SPI, UART/USART |
| Core Size | 8-Bit |
| Program Memory Size | 32KB (16K x 16) |
| Data Converters | A/D 8x10b |
| Package | Tray |
| Product Status | Active |
| Base Product Number | ATMEGA32 |
| REACH Status | REACH Unaffected |
| Other Names | ATMEGA32AAU |
| Standard Package | 160 |
| ECCN | EAR99 |
| HTSUS | 8542.31.0001 |
ATMEGA32A-AU 8-bit AVR microcontroller, 16MHz 32KB Flash MCU
The ATMEGA32A-AU is a high-performance 8-bit AVR microcontroller from Microchip Technology, designed for embedded control applications requiring robust processing, versatile peripherals, and low power consumption. Featuring 32KB of in-system programmable Flash memory, 2KB SRAM, and 1KB EEPROM, this MCU operates at 16MHz with 16 MIPS throughput, delivering efficient execution for industrial automation, consumer electronics, and IoT edge devices. Its 32-pin TQFP package provides 32 programmable I/O lines with 20mA drive capability, supporting direct interfacing with sensors, displays, and actuators, while integrated 10-bit ADC (8-channel), 4 PWM channels, and USART/SPI/I²C interfaces enable comprehensive system control.
The ATMEGA32A-AU excels in power-sensitive designs, offering six sleep modes with current draw as low as 1μA in power-down mode, ideal for battery-operated devices. Its hardware multiplier accelerates arithmetic operations, while brown-out detection and watchdog timer enhance system reliability. Operating at 2.7V–5.5V, it accommodates 3.3V and 5V logic without level-shifting. Microchip's AVR Studio and Atmel START tools streamline firmware development, making it a preferred choice for motor control, HMI panels, and smart sensors.
Alternative Models & Key Features:
● ATMEGA328P-AU: 28-pin variant with 32KB Flash, widely used in Arduino-compatible designs.
● ATMEGA64A-AU: 64KB Flash upgrade with identical peripherals and pinout for larger applications.
● ATTINY841-SSU: Smaller 14-pin AVR with 8KB Flash for cost-sensitive projects.
● STM8S105C6T6: STMicro 8-bit alternative with 32KB Flash and CAN support.
● PIC18F45K22-I/PT: Microchip 8-bit competitor with enhanced XLP low-power technology.
