ATMEGA324P-20AUR vs ATMEGA644P-20AQR Comparison
Detailed side-by-side comparison of ATMEGA324P-20AUR by Microchip Technology and ATMEGA644P-20AQR 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-20AUR - 8-Bit AVR MCU 32KB 20MHz | Microchip
ATMEGA324P-20AUR ✓ ActiveMicrochip Technology
ATMEGA644P-20AQR - 8-bit AVR MCU 64KB 20MHz TQFP-44 | Microchip
ATMEGA644P-20AQR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA324P-20AUR | ATMEGA644P-20AQR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.52 | $5.95 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Program Memory Size | 32 KB ISP Flash (16K x 16) | 64 KB (32K x 16) Flash |
| EEPROM | 1 KB | — |
| SRAM | 2 KB | — |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Operating Voltage Range | 4.5 V to 5.5 V | — |
| General Purpose I/O Lines | 32 | — |
| General Purpose Working Registers | 32 | — |
| Instruction Set | 131 powerful instructions, most single-clock cycle | — |
| Package | 44-pin TQFP (10 x 10 mm, 0.80 mm pitch) | — |
| Operating Temperature Range | -40C to +85C (industrial) | — |
| ADC | 8-channel 10-bit successive approximation | — |
| USART Interfaces | 2 | — |
| Timer/Counters | Three flexible timer/counters with compare modes and PWM | — |
| Serial Interfaces | SPI master/slave, byte-oriented TWI (I2C) | — |
| Real Time Counter | Yes, with separate oscillator | — |
| Flash Endurance | 10,000 write/erase cycles | — |
| EEPROM Endurance | 100,000 write/erase cycles | — |
| Programming Interfaces | SPI, JTAG, bootloader (ISP) | — |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | Compliant | [DATA_NEEDED: RoHS compliance status] |
| Core Size | — | 8-Bit |
| Program Memory Type | — | In-System Programmable Flash |
| RAM Size | — | 4 KB (4K x 8) SRAM |
| EEPROM Size | — | 2 KB |
| Number of I/O | — | 32 |
| Package / Case | — | 44-TQFP (10 x 10 mm) |
| Oscillator Type | — | Internal |
| Peripherals | — | Dual USART, 10-bit ADC, JTAG, picoPower features |
| Instructions | — | 131 powerful instructions, most single-clock cycle |
| Supply Voltage | — | 5 V (industrial per Mouser listing); [DATA_NEEDED: exact VCC min/max range] |
| Operating Temperature | — | [DATA_NEEDED: temperature range - Mouser lists IND (industrial)] |
| Packaging | — | Tape & Reel (TR) |
| Programming Interface | — | ICSP (SPI) and JTAG |