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