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