ATMEGA328P-MMH vs ATMEGA328-MMHR Comparison
Detailed side-by-side comparison of ATMEGA328P-MMH by Microchip Technology and ATMEGA328-MMHR 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-MMH - 20MHz 32KB 8-Bit AVR MCU | Microchip Technology
ATMEGA328P-MMH ✓ ActiveMicrochip Technology
ATMEGA328-MMHR - 8-Bit AVR MCU 20MHz 32KB Flash | Microchip
ATMEGA328-MMHR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA328P-MMH | ATMEGA328-MMHR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Product Type | 8-bit AVR RISC microcontroller | — |
| Maximum Clock Frequency | 20 MHz | — |
| Flash Memory | 32 KB | 32 KB (16K x 16) |
| Flash Organization | 16K x 16 bits | — |
| ISP Flash Read-While-Write | Supported | — |
| SRAM | 2 KB | 2 KB |
| EEPROM | 1024 bytes | 512 B |
| 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 | 28-VQFN, 4 x 4 mm | 28-VQFN (4x4 mm) Exposed Pad |
| Package Pin Count | 28 pins | — |
| Mounting Type | Surface mount | Surface Mount |
| Operating Supply Voltage | 4.5 V to 5.5 V | — |
| Terminal Finish | NiPdAu | — |
| Green Compliance | Green | — |
| Core | — | AVR 8-bit RISC |
| Core Size | — | 8-bit |
| Speed | — | 20 MHz |
| 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) |
| Programming Interface | — | SPI ISP, debugWIRE |
| Sleep Modes | — | Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby |
| RoHS Status | — | Compliant (Green package) |