ATMEGA644A-AU vs ATMEGA32A-AN Comparison
Detailed side-by-side comparison of ATMEGA644A-AU by Microchip Technology and ATMEGA32A-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
ATMEGA32A-AN - 8-bit AVR MCU, 32KB Flash, 16MHz, 44-TQFP | Microchip
ATMEGA32A-AN ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644A-AU | ATMEGA32A-AN |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.40 | $3.40 |
| Core Architecture | 8-bit AVR enhanced RISC | 8-bit AVR enhanced RISC |
| Program Memory Size | 64 KB Flash (32K x 16) | — |
| Program Memory Type | ISP FLASH with Read-While-Write | — |
| EEPROM | 2 KB | 1 KB |
| SRAM | 4 KB | 2 KB |
| Maximum CPU Speed | 20 MHz (20 MIPS) | — |
| Supply Voltage Range | 1.8 V to 5.5 V | — |
| General Purpose I/O | 32 lines | — |
| Working Registers | 32 general purpose registers | — |
| USART | 2 | — |
| Timer/Counters | 3 (with compare modes and PWM) | Two 8-bit + one 16-bit |
| ADC | 8-channel, 10-bit | 8-channel, 10-bit |
| Serial Interfaces | TWI (2-wire, I2C-compatible), SPI | — |
| Real Time Counter | Yes (RTC) | — |
| Package | 44-TQFP (10x10 mm) | 44-pin TQFP, 10x10 mm, 0.8 mm pitch |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) | — |
| Device Series | ATmega644A | — |
| Program Memory (Flash) | — | 32 KB |
| Maximum CPU Clock | — | 16 MHz |
| Supply Voltage (Vcc) | — | 4.5 V to 5.5 V |
| I/O Pins | — | 32 |
| Communication Interfaces | — | USART, SPI, TWI (I2C) |
| Debug Interface | — | JTAG (IEEE 1149.1 compliant OCD) |
| Brown-Out Detector | — | Yes, programmable threshold |
| Watchdog Timer | — | Yes, with internal oscillator |
| Operating Temperature Range | — | -40 C to +105 C (industrial) |
| MSL Level | — | MSL3 (per JEDEC J-STD-020) |
| RoHS Status | — | Compliant |
| Lead-Free | — | Yes |
| AEC-Q100 Automotive | — | Not qualified |