ATMEGA328-AU vs ATMEGA328P-AU Comparison
Detailed side-by-side comparison of ATMEGA328-AU by Microchip Technology and ATMEGA328P-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
ATMEGA328-AU - 8-bit AVR MCU 20MHz 32KB Flash TQFP-32 | Microchip (Tape & Reel)
ATMEGA328-AU ✓ ActiveMicrochip Technology
ATMEGA328P-AU - 8-bit AVR MCU 20MHz 32KB Flash TQFP-32 | Microchip
ATMEGA328P-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328-AU | ATMEGA328P-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.65 | $1.74 |
| Core Processor | AVR 8-bit RISC | — |
| Core Size | 8-bit | — |
| Speed | 20 MHz | — |
| Flash Memory | 32 KB (16K x 16) | 32 KB (16K x 16) |
| EEPROM | 1 KB | 1 KB |
| SRAM | 2 KB | 2 KB |
| Number of I/O | 23 | — |
| ADC Resolution | 10-bit | — |
| Number of ADC Channels | 8 (TQFP-32) | — |
| Timers/Counters | 2 x 8-bit, 1 x 16-bit | — |
| Communication Interfaces | USART, SPI, TWI (I2C) | — |
| Supply Voltage Range | 2.5 V to 5.5 V | — |
| Operating Temperature | -40C to +85C | -40 C to +85 C |
| Package | 32-TQFP (7x7 mm) | TQFP-32 (7x7 mm, 0.8 mm pitch) |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (R suffix) | — |
| Programmability | In-System Programmable (ISP), read-while-write | — |
| RoHS Status | Compliant | Compliant |
| Core Architecture | — | AVR 8-bit RISC |
| CPU Speed | — | 20 MHz |
| Instruction Throughput | — | 20 MIPS |
| Operating Voltage | — | 1.8 V to 5.5 V |
| I/O Pins | — | 23 |
| Timers | — | 2 x 8-bit, 1 x 16-bit |
| PWM Channels | — | 6 |
| ADC | — | 8-channel 10-bit |
| Serial Interfaces | — | USART, SPI, I2C (TWI) |
| MSL Level | — | [DATA_NEEDED: MSL level] |