ATMEGA644P-20AU vs ATMEGA644P-20AQR Comparison
Detailed side-by-side comparison of ATMEGA644P-20AU 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
ATMEGA644P-20AU - 8-Bit AVR MCU 20MHz 64KB Flash TQFP-44 | Microchip
ATMEGA644P-20AU ✓ ActiveMicrochip Technology
ATMEGA644P-20AQR - 8-bit AVR MCU 64KB 20MHz TQFP-44 | Microchip
ATMEGA644P-20AQR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA644P-20AU | ATMEGA644P-20AQR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.95 | $5.95 |
| Core | AVR 8-bit RISC | — |
| Core Size | 8-Bit | 8-Bit |
| Maximum Clock Frequency | 20 MHz | 20 MHz |
| Program Memory Size | 64 KB (32K x 16) FLASH | 64 KB (32K x 16) Flash |
| Data RAM Size | 4 KB SRAM | — |
| EEPROM Size | 2 KB | 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 | Dual USART, 10-bit ADC, JTAG, picoPower features |
| I/O Count | 32 | — |
| Package | 44-TQFP (10x10 mm) | — |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | [DATA_NEEDED: temperature range - Mouser lists IND (industrial)] |
| Throughput | Up to 20 MIPS at 20 MHz (approx. 1 MIPS/MHz) | — |
| Programming | In-System Programmable (ISP) via SPI | — |
| RoHS Status | Compliant (green package) | [DATA_NEEDED: RoHS compliance status] |
| Core Architecture | — | AVR 8-bit RISC |
| Program Memory Type | — | In-System Programmable Flash |
| RAM Size | — | 4 KB (4K x 8) SRAM |
| Number of I/O | — | 32 |
| Package / Case | — | 44-TQFP (10 x 10 mm) |
| Oscillator Type | — | Internal |
| Instructions | — | 131 powerful instructions, most single-clock cycle |
| Supply Voltage | — | 5 V (industrial per Mouser listing); [DATA_NEEDED: exact VCC min/max range] |
| Packaging | — | Tape & Reel (TR) |
| Programming Interface | — | ICSP (SPI) and JTAG |