ATMEGA328-AU vs ATMEGA328PB-AU Comparison
Detailed side-by-side comparison of ATMEGA328-AU by Microchip Technology and ATMEGA328PB-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
ATMEGA328PB-AU - 8-Bit AVR MCU 20MHz 32KB Flash | Microchip
ATMEGA328PB-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328-AU | ATMEGA328PB-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.65 | $1.12 |
| Core Processor | AVR 8-bit RISC | AVR |
| Core Size | 8-bit | 8-Bit |
| Speed | 20 MHz | 20 MHz |
| Flash Memory | 32 KB (16K x 16) | 32 KB (16K x 16) |
| EEPROM | 1 KB | 2 KB |
| SRAM | 2 KB | 4 KB |
| Number of I/O | 23 | — |
| ADC Resolution | 10-bit | 10-bit |
| Number of ADC Channels | 8 (TQFP-32) | 7 |
| 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 | -40C to +85C (Industrial) |
| Package | 32-TQFP (7x7 mm) | 32-TQFP (7 x 7 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (R suffix) | — |
| Programmability | In-System Programmable (ISP), read-while-write | — |
| RoHS Status | Compliant | — |
| General Purpose I/O | — | 27 |
| Connectivity | — | I2C x2, SPI x2, USART x2 |
| Technology | — | picoPower, CMOS |
| Safety Feature | — | Functional Safety (FuSa) |
| Programming | — | In-System Programmable (ISP), read-while-write |
| Instruction Throughput | — | Up to 20 MIPS at 20 MHz |