ATMEGA324A-MU vs ATMEGA644PA-MU Comparison
Detailed side-by-side comparison of ATMEGA324A-MU by Microchip Technology and ATMEGA644PA-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
ATMEGA324A-MU - 8-bit AVR MCU 32KB Flash 20MHz | Microchip
ATMEGA324A-MU ✓ ActiveMicrochip Technology
ATMEGA644PA-MU - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644PA-MU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA324A-MU | ATMEGA644PA-MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.90 | $3.78 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Flash Memory | 32 KB ISP Flash (read-while-write) | 64 KB (32K x 16) ISP Flash, read-while-write |
| EEPROM | 1 KB | 2 KB |
| SRAM | 2 KB | 4 KB |
| Maximum Clock Frequency | 20 MHz | — |
| General Purpose I/O Lines | 32 | — |
| Working Registers | 32 general purpose | — |
| Supply Voltage Class | 2.5 V / 3.3 V / 5 V systems | — |
| Package | 44-VFQFN Exposed Pad | 44-VQFN (7x7 mm), exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| Temperature Range | Industrial (-40C to +85C) | — |
| Instructions | 131 powerful instructions, most single-cycle | 131 instructions, most single-cycle |
| Throughput | Up to ~1 MIPS per MHz | — |
| Real Time Counter | Yes | — |
| Lifecycle Status | Active | — |
| Packaging | Tape & Reel | — |
| RoHS Status | [DATA_NEEDED: RoHS status] | RoHS compliant (per Microchip product listing) |
| Supply Voltage Range (Vcc min-max) | [DATA_NEEDED: full Vcc min-max range] | — |
| Core Frequency | — | 20 MHz |
| GPIO Count | — | 32 |
| MIPS Throughput | — | Up to 20 MIPS at 20 MHz |
| Timer/Counters | — | Three flexible timer/counters with compare modes and PWM |
| USART | — | Two programmable serial USARTs |
| Serial Interfaces | — | Two-Wire Interface (I2C-compatible), SPI |
| ADC | — | 8-channel 10-bit ADC |
| RTC | — | Real Time Counter with separate oscillator |
| Low Power Technology | — | picoPower |
| Supply Voltage Range | — | 2.5 V / 3.3 V / 5 V class (per distributor listing: 2.5V/3.3V/5V) |
| Data Sheet Document Number | — | DS40002070A (per Microchip ATMEGA644PA-MU data sheet) |