ATMEGA324PA-MCHR vs ATMEGA324PB-MN Comparison
Detailed side-by-side comparison of ATMEGA324PA-MCHR by Microchip Technology and ATMEGA324PB-MN 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
ATMEGA324PA-MCHR - 8-bit AVR MCU 32KB Flash 20MHz | Microchip
ATMEGA324PA-MCHR ✓ ActiveMicrochip Technology
ATMEGA324PB-MN - 8-bit AVR MCU 20MHz 32KB Flash | Microchip
ATMEGA324PB-MN ✓ ActiveSpecification Comparison
| Parameter | ATMEGA324PA-MCHR | ATMEGA324PB-MN |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Processor | AVR | AVR |
| Core Size | 8-Bit | 8-Bit |
| Speed | 20 MHz | 20 MHz |
| Flash Memory Size | 32 KB (16K x 16) | — |
| EEPROM Size | 1 KB | — |
| SRAM Size | 2 KB | — |
| Number of I/O | 32 | — |
| General Purpose Registers | 32 | — |
| Supply Voltage | 2.5 V / 3.3 V / 5 V | — |
| Instructions | 131 instructions, most single-cycle execution | — |
| MIPS per MHz | Up to 1 MIPS/MHz | — |
| Package | 44-QFN (5x5 mm) with exposed pad | 44-VQFN (7x7 mm) Exposed Pad |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | [DATA_NEEDED: operating temperature range] |
| Programming | ICSP in-system programmable Flash with read-while-write | — |
| Low Power Technology | picoPower | — |
| Debug / Scan | JTAG (on-chip debug and boundary scan) | — |
| Life Cycle Stage | ACTIVE | — |
| Flash Memory | — | 32 KB (16K x 16) |
| EEPROM | — | 1 KB |
| SRAM | — | 2 KB |
| GPIO Count | — | 39 |
| Timer/Counters | — | 5 |
| Supply Voltage Range | — | 1.8 V to 5.5 V |
| USART Peripherals | — | Multiple USARTs (PB variant adds 2 vs PA) |
| Touch Controller | — | QTouch PTC, 32 self-cap / 256 mutual-cap buttons |
| Connectivity | — | SPI, I2C (TWI), USART |
| Functional Safety | — | FuSa capable |
| Technology | — | picoPower low-power technology |