ATMEGA32A-AU vs ATMEGA329P-20AU Comparison
Detailed side-by-side comparison of ATMEGA32A-AU by Microchip Technology and ATMEGA329P-20AU by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATMEGA32A-AU - 8-bit AVR MCU, 32KB Flash, 16MHz, TQFP-44 | Microchip
ATMEGA32A-AU β ActiveMicrochip Technology
ATMEGA329P-20AU - 20MHz 8-bit AVR MCU 32KB Flash TQFP-64
ATMEGA329P-20AU β ActiveSpecification Comparison
| Parameter | ATMEGA32A-AU | ATMEGA329P-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.95 | $4.71 |
| Manufacturer | Microchip Technology (formerly Atmel) | β |
| Series | AVR ATmega | β |
| Core Architecture | AVR RISC 8-bit | AVR (8-bit RISC, Harvard) |
| Maximum Clock Frequency | 16 MHz | β |
| MIPS Throughput | 16 MIPS at 16 MHz | β |
| Program Memory (Flash) | 32 KB | 32 KB (16K x 16), In-System Programmable with RWW |
| SRAM | 2 KB | 2 KB (2K x 8) |
| EEPROM | 1 KB | 1 KB |
| Operating Voltage Range | 2.7 V to 5.5 V | β |
| I/O Pins | 32 programmable | β |
| ADC | 8-channel, 10-bit | 10-bit, up to 8 single-ended channels |
| Timers/Counters | Two 8-bit and one 16-bit | β |
| Communication Peripherals | USART, SPI, TWI (I2C) | 2x USART, 1x TWI (I2C), 1x SPI (also ISP) |
| Debug Interface | JTAG (IEEE 1149.1 compliant) | JTAG (IEEE 1149.1 compliant) |
| Package | 44-pin TQFP (10x10 mm, 0.8 mm pitch) | 64-pin TQFP (14x14 mm, 0.8 mm pitch) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial, -A suffix) |
| RoHS Status | Compliant (Green) | Compliant (Pb-free / Green) |
| Instruction Set | β | 131 instructions, mostly single-cycle |
| Maximum Clock Speed | β | 20 MHz |
| Throughput | β | Up to 20 MIPS at 20 MHz |
| Supply Voltage (Vcc) | β | 2.7 V to 5.5 V (10 MHz max below 4.5 V; 20 MHz requires 4.5-5.5 V) |
| General-Purpose I/O Pins | β | 54 |
| General-Purpose Working Registers | β | 32 |
| PWM Channels | β | 6 |
| Power-Save Modes | β | Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby (picoPower) |
| QTouch Support | β | Yes (peripheral touch controller via library) |