ATMEGA324P-20AU vs ATMEGA644P-20AU Comparison
Detailed side-by-side comparison of ATMEGA324P-20AU by Microchip Technology and ATMEGA644P-20AU 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
ATMEGA324P-20AU - 8-bit AVR MCU 20MHz 32KB Flash | Microchip
ATMEGA324P-20AU ✓ ActiveMicrochip Technology
ATMEGA644P-20AU - 8-Bit AVR MCU 20MHz 64KB Flash TQFP-44 | Microchip
ATMEGA644P-20AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA324P-20AU | ATMEGA644P-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.24 | $3.95 |
| Core Architecture | 8-bit AVR RISC | — |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Flash Memory | 32 KB (16K x 16) ISP | — |
| EEPROM | 1 KB | — |
| SRAM | 2 KB | — |
| Supply Voltage | 4.5 V to 5.5 V (20 MHz rating) | — |
| Number of I/O Lines | 32 | — |
| USARTs | 2 | — |
| Timers | 3 timer/counters with compare modes and PWM | — |
| ADC | 8-channel, 10-bit | — |
| Serial Interfaces | 2x USART, SPI, Two-Wire (I2C-compatible) | — |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | -40C to +85C (industrial) |
| Programming | In-System Programmable (ISP), read-while-write | In-System Programmable (ISP) via SPI |
| Low Power Technology | picoPower | — |
| Working Registers | 32 general purpose | — |
| Moisture Sensitivity Level | [DATA_NEEDED: MSL level] | — |
| Core | — | AVR 8-bit RISC |
| Core Size | — | 8-Bit |
| Program Memory Size | — | 64 KB (32K x 16) FLASH |
| Data RAM Size | — | 4 KB SRAM |
| EEPROM Size | — | 2 KB |
| Supply Voltage Range | — | 4.5 V to 5.5 V (20 MHz grade) |
| Number of USARTs | — | 2 |
| ADC Resolution | — | 10-bit |
| Peripherals | — | SPI, TWI (I2C), PWM timers, WDT, BOD |
| I/O Count | — | 32 |
| Throughput | — | Up to 20 MIPS at 20 MHz (approx. 1 MIPS/MHz) |
| RoHS Status | — | Compliant (green package) |