ATMEGA328P-AUR vs ATMEGA328PB-AUR Comparison
Detailed side-by-side comparison of ATMEGA328P-AUR by Microchip Technology and ATMEGA328PB-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
ATMEGA328P-AUR - 8-bit AVR MCU, 32KB Flash, 20MHz, TQFP-32 | Microchip
ATMEGA328P-AUR ✓ ActiveMicrochip Technology
ATMEGA328PB-AUR - 8-Bit AVR MCU 32KB Flash 20MHz TQFP-32 | Microchip
ATMEGA328PB-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328P-AUR | ATMEGA328PB-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.18 | $1.31 |
| Core Architecture | AVR 8-bit RISC | 8-bit AVR RISC |
| Program Memory (Flash) | 32 KB | — |
| SRAM | 2 KB | 4 KB |
| EEPROM | 1 KB | 2 KB |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Supply Voltage Range | 1.8 V to 5.5 V | — |
| Operating Temperature Range | -40 C to +85 C (Industrial) | — |
| I/O Pins | 23 programmable | — |
| ADC | 10-bit, up to 8 channels | 10-bit ADC |
| PWM Channels | 6 | — |
| Timers | 2 x 8-bit, 1 x 16-bit | 2 x 8-bit and 2 x 16-bit timer/counters |
| Communication Interfaces | USART, SPI, I2C (TWI) | 2 x SPI, 2 x TWI (I2C), USART |
| Package | 32-pin TQFP, 7x7 mm, 0.8 mm pitch | 32-TQFP (7x7 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Instruction Set | 131 instructions, mostly single-cycle | — |
| Working Registers | 32 x 8-bit | 32 x 8-bit |
| Watchdog Timer | Yes, with separate on-chip oscillator | — |
| Brown-out Detection | Yes | — |
| Power-Saving Modes | 6 software-selectable | — |
| MSL Level | 3 (168 hours) | — |
| RoHS Status | Compliant | [DATA_NEEDED: RoHS Compliance Status] |
| Throughput | 20 MIPS at 20 MHz | Up to 1 MIPS per MHz (single-cycle instructions) |
| Flash Program Memory | — | 32 KB (16K x 16) |
| General Purpose I/O | — | 27 I/O lines |
| Packaging | — | Tape & Reel (AUR suffix) |
| Temperature Grade | — | Industrial (per Mouser listing) |
| Operating Supply Voltage | — | [DATA_NEEDED: Operating Supply Voltage Range] |
| Special Features | — | picoPower technology, Functional Safety (FuSa) |