ATMEGA329A-AU vs ATMEGA329PA-AUR Comparison
Detailed side-by-side comparison of ATMEGA329A-AU by Microchip Technology and ATMEGA329PA-AUR 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
ATMEGA329A-AU - 32KB AVR MCU, 20MHz, TQFP-64 | Microchip
ATMEGA329A-AU ✓ ActiveMicrochip Technology
ATMEGA329PA-AUR - 8-bit AVR MCU, 32KB Flash, 20MHz, 64-TQFP | Microchip
ATMEGA329PA-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA329A-AU | ATMEGA329PA-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.31 | $5.94 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC (Harvard) |
| Flash Memory | 32 KB ISP Flash (16K x 16) with read-while-write | — |
| SRAM | 2 KB | 2 KB |
| EEPROM | 1 KB | 1 KB |
| Maximum Clock Frequency | 20 MHz | — |
| General Purpose I/O | 54 lines | — |
| Working Registers | 32 general purpose | — |
| LCD Controller | On-chip LCD controller with internal contrast control | Up to 4x25 segments (integrated) |
| Debug/Programming Interface | JTAG (boundary-scan, on-chip debug, ISP programming) | — |
| Timers | Three flexible timers | — |
| Package | 64-TQFP (14x14 mm) | 64-pin TQFP (14x14 mm, 0.8 mm pitch) |
| Mounting Type | Surface Mount | Surface Mount |
| Temperature Grade | Industrial | — |
| RoHS Status | Green (compliant) | Compliant |
| Supply Voltage Range | 2.5 V to 5.5 V (per ATmega329A family; see datasheet) | — |
| Product Family | AVR ATmega | — |
| Family | — | ATmega (picoPower) |
| Program Memory (Flash) | — | 32 KB |
| Maximum CPU Speed | — | 20 MHz |
| Supply Voltage | — | 2.7 V to 5.5 V (4.5 V to 5.5 V at 20 MHz) |
| General-Purpose I/O | — | 54 |
| Timers/Counters | — | Two 8-bit + One 16-bit |
| ADC | — | 8-channel, 10-bit |
| Serial Interfaces | — | USART, SPI, TWI (I2C) |
| Operating Temperature | — | -40C to +85C (Industrial) |
| Programming Interface | — | JTAG / debugWIRE / ISP |
| MSL Level | — | 3 (168 hours) |