ATMEGA645A-MUR vs ATMEGA325A-MUR Comparison
Detailed side-by-side comparison of ATMEGA645A-MUR by Microchip Technology and ATMEGA325A-MUR 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
ATMEGA645A-MUR - 8-bit AVR MCU 64KB Flash 64-QFN | Microchip
ATMEGA645A-MUR ✓ ActiveMicrochip Technology
ATMEGA325A-MUR - 8-bit AVR MCU 32KB 20MHz 64-QFN | Microchip
ATMEGA325A-MUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645A-MUR | ATMEGA325A-MUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.30 | $2.19 |
| Core Architecture | AVR 8-bit RISC | — |
| Flash Memory | 64 KB (32K x 16) ISP Flash | — |
| EEPROM | 2 KB | — |
| SRAM | 4 KB | — |
| Data Bus Width | 8 bit | — |
| Maximum Clock Frequency | 16 MHz (per DigiKey listing); family rated to 20 MHz | — |
| Supply Voltage | 4.5 V to 5.5 V | — |
| General Purpose I/O | 54 I/O lines (family 54/69 depending on package) | — |
| Working Registers | 32 general purpose | — |
| Package | 64-QFN / MLF, 9x9 mm | 64-QFN (9x9 mm) with exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| Temperature Range | Industrial (-40C to +85C) | — |
| Programming | In-System Programmable (ISP) Flash, read-while-write | — |
| Debug Interface | JTAG (debugWIRE/ICSP supported via MPLAB SNAP) | — |
| RoHS Status | Green / RoHS compliant (per FindIC listing) | — |
| Packaging | Tape & Reel (R suffix) | Tape & Reel (TR) |
| Lifecycle Status | Active | Active |
| Core Processor | — | AVR |
| Core Size | — | 8-Bit |
| Speed | — | 20 MHz |
| Program Memory Type | — | FLASH |
| Program Memory Size | — | 32 KB (16K x 16) |
| EEPROM Size | — | 1 KB |
| RAM Size | — | 2 KB |
| Supply Voltage Range | — | 2.5 V, 3.3 V, 5 V operation |
| Supply Voltage (per DigChip summary) | — | 4.5 V to 5.5 V at maximum speed grade |
| Number of I/O | — | 54 |
| Connectivity | — | SPI, UART/USART |
| ADC Resolution | — | 10-bit |
| Operating Temperature | — | -40C to +85C |
| Architecture | — | Advanced RISC, 131 instructions |