ATMEGA328PB-MU vs ATMEGA328-MU Comparison
Detailed side-by-side comparison of ATMEGA328PB-MU by Microchip Technology and ATMEGA328-MU 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
ATMEGA328PB-MU - 8-Bit AVR MCU 20MHz 32KB Flash | Microchip
ATMEGA328PB-MU ✓ ActiveMicrochip Technology
ATMEGA328-MU - 8-bit AVR MCU 32KB Flash 20MHz | Microchip
ATMEGA328-MU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328PB-MU | ATMEGA328-MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.19 | $2.20 |
| Core Architecture | AVR 8-bit RISC | AVR 8-bit RISC |
| Core Size | 8-Bit | — |
| Maximum Clock Frequency | 20 MHz | — |
| Program Memory Size | 32 KB (16K x 16) FLASH | — |
| SRAM Size | 2 KB | — |
| EEPROM Size | 1 KB | — |
| Performance | Approx. 1 MIPS per MHz | — |
| I/O Count | 27 GPIO (incl. PORTE [3:0] on QFN) | — |
| Package | 32-VFQFN (5x5 mm) | 32-pin VQFN (5x5 mm) with EP |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) | — |
| Supply Voltage | [DATA_NEEDED: VCC range] | 1.8 V to 5.5 V |
| ADC Resolution | 10-bit | — |
| Timers | 2 x 8-bit, 1 x 16-bit | 2 x 8-bit + 1 x 16-bit |
| Communication Interfaces | USART, 2 x SPI, 2 x I2C (TWI) | 1x USART, 1x SPI, 1x I2C (TWI) |
| Low Power Technology | picoPower, multiple sleep modes | — |
| Programming | ISP, debugWIRING, self-programming boot loader | — |
| Safety Qualification | Functional Safety (FuSa) supported per DigiKey | — |
| RoHS Status | Compliant (GREEN package per FindIC) | — |
| Flash Program Memory | — | 32 KB (16K x 16) |
| SRAM | — | 2 KB |
| EEPROM | — | 1 KB |
| Maximum CPU Speed | — | 20 MHz (20 MIPS) |
| Operating Temperature (Industrial) | — | -40C to +85C |
| I/O Pins | — | 23 general-purpose |
| ADC | — | 10-bit, 8 channels, up to 15 kSPS |
| On-chip Debug | — | debugWIRE |
| Instruction Set | — | 131 instructions, mostly single-cycle |
| Power-down Mode Current | — | < 1 uA (typical, datasheet) |
| MSL Level | — | MSL3 (per JEDEC J-STD-020, typical for VQFN) |