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