ATMEGA644A-AU vs ATMEGA64A-AN Comparison
Detailed side-by-side comparison of ATMEGA644A-AU by Microchip Technology and ATMEGA64A-AN 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
ATMEGA644A-AU - 8-bit AVR MCU 20MHz 64KB Flash | Microchip
ATMEGA644A-AU ✓ ActiveMicrochip Technology
ATMEGA64A-AN - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip
ATMEGA64A-AN ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644A-AU | ATMEGA64A-AN |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.40 | $7.02 |
| Core Architecture | 8-bit AVR enhanced RISC | — |
| Program Memory Size | 64 KB Flash (32K x 16) | 64 KB (32K x 16) Flash |
| Program Memory Type | ISP FLASH with Read-While-Write | ISP FLASH with read-while-write |
| EEPROM | 2 KB | — |
| SRAM | 4 KB | — |
| Maximum CPU Speed | 20 MHz (20 MIPS) | — |
| Supply Voltage Range | 1.8 V to 5.5 V | [DATA_NEEDED: supply voltage range] |
| General Purpose I/O | 32 lines | — |
| Working Registers | 32 general purpose registers | 32 general purpose |
| USART | 2 | 2 |
| Timer/Counters | 3 (with compare modes and PWM) | — |
| ADC | 8-channel, 10-bit | 8-channel, 10-bit |
| Serial Interfaces | TWI (2-wire, I2C-compatible), SPI | 2x USART, TWI (I2C-compatible), SPI |
| Real Time Counter | Yes (RTC) | — |
| Package | 44-TQFP (10x10 mm) | 64-TQFP (14x14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +105C |
| Device Series | ATmega644A | — |
| Core | — | AVR 8-bit RISC |
| Core Size | — | 8-bit |
| Maximum Clock Frequency | — | 16 MHz |
| EEPROM Size | — | 2 KB |
| SRAM Size | — | 4 KB |
| Number of I/Os | — | 53 |
| Timers/Counters | — | 4 flexible timer/counters with compare modes and PWM |
| Real-Time Counter | — | Yes |
| RoHS Status | — | Compliant (Green per FindIC listing) |
| Programming Method | — | In-System Programming (ISP) |