ATMEGA328PB-MU vs ATMEGA48PB-MU Comparison
Detailed side-by-side comparison of ATMEGA328PB-MU by Microchip Technology and ATMEGA48PB-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
ATMEGA48PB-MU - 8-bit AVR MCU 4KB Flash 20MHz QFN-32 | Microchip
ATMEGA48PB-MU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328PB-MU | ATMEGA48PB-MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $1.19 | $0.94 |
| 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-VFQFN (5x5 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) | -40 C to +85 C |
| Supply Voltage | [DATA_NEEDED: VCC range] | — |
| ADC Resolution | 10-bit | 10-bit, 8 channels |
| Timers | 2 x 8-bit, 1 x 16-bit | — |
| Communication Interfaces | USART, 2 x SPI, 2 x I2C (TWI) | USART, SPI, Two-Wire Interface (I2C-compatible) |
| Low Power Technology | picoPower, multiple sleep modes | picoPower |
| Programming | ISP, debugWIRING, self-programming boot loader | — |
| Safety Qualification | Functional Safety (FuSa) supported per DigiKey | — |
| RoHS Status | Compliant (GREEN package per FindIC) | Compliant (green package) |
| Program Memory (Flash) | — | 4 KB (2K x 16) |
| EEPROM | — | 256 B |
| SRAM | — | 512 B |
| Maximum CPU Frequency | — | 20 MHz |
| Supply Voltage Range | — | 1.8 V to 5.5 V |
| General Purpose I/O | — | 27 lines |
| Timers/Counters | — | 3 (with compare modes) |
| Working Registers | — | 32 x 8-bit |
| In-System Programming | — | Yes (ISP, read-while-write) |
| Functional Safety Support | — | Yes (FuSa class per DigiKey listing) |