ATMEGA328-MMHR vs ATMEGA328P-MMH Comparison
Detailed side-by-side comparison of ATMEGA328-MMHR by Microchip Technology and ATMEGA328P-MMH 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-MMHR - 8-Bit AVR MCU 20MHz 32KB Flash | Microchip
ATMEGA328-MMHR ✓ ActiveMicrochip Technology
ATMEGA328P-MMH - 20MHz 32KB 8-Bit AVR MCU | Microchip Technology
ATMEGA328P-MMH ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328-MMHR | ATMEGA328P-MMH |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core | AVR 8-bit RISC | — |
| Core Size | 8-bit | — |
| Speed | 20 MHz | — |
| Flash Memory | 32 KB (16K x 16) | 32 KB |
| SRAM | 2 KB | 2 KB |
| EEPROM | 512 B | 1024 bytes |
| Supply Voltage Range | 1.8 V to 5.5 V | — |
| Operating Temperature | -40C to +85C | — |
| Number of I/O | 23 | — |
| ADC Channels | 6 x 10-bit | — |
| Timers | 2 x 8-bit, 1 x 16-bit | — |
| Communication Interfaces | USART, SPI, 2-Wire (I2C) | — |
| Package | 28-VQFN (4x4 mm) Exposed Pad | 28-VQFN, 4 x 4 mm |
| Mounting Type | Surface Mount | Surface mount |
| Programming Interface | SPI ISP, debugWIRE | — |
| Sleep Modes | Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby | — |
| RoHS Status | Compliant (Green package) | — |
| Product Type | — | 8-bit AVR RISC microcontroller |
| Maximum Clock Frequency | — | 20 MHz |
| Flash Organization | — | 16K x 16 bits |
| ISP Flash Read-While-Write | — | Supported |
| General-Purpose I/O Lines | — | 23 lines |
| General-Purpose Working Registers | — | 32 registers |
| Instruction Set | — | 131 powerful AVR instructions |
| Single-Clock-Cycle Execution | — | Most instructions |
| Serial Interfaces | — | I2C, SPI, and UART/USART |
| Package Pin Count | — | 28 pins |
| Operating Supply Voltage | — | 4.5 V to 5.5 V |
| Terminal Finish | — | NiPdAu |
| Green Compliance | — | Green |