ATMEGA644P-20MQR vs ATMEGA644P-20MQ Comparison
Detailed side-by-side comparison of ATMEGA644P-20MQR by Microchip Technology and ATMEGA644P-20MQ 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-20MQ - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644P-20MQ NrndSpecification Comparison
| Parameter | ATMEGA644P-20MQR | ATMEGA644P-20MQ |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Nrnd | Nrnd |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.30 | $2.48 |
| Core Processor | AVR 8-bit RISC | β |
| Core Size | 8-bit | β |
| Speed (Max Clock) | 20 MHz | β |
| Flash Program Memory | 64 KB (32K x 16) | 64 KB (32K x 16) |
| SRAM | 4 KB (4K x 8) | 4 KB (4,096 bytes) |
| EEPROM | 2 KB | 2 KB (2,048 bytes) |
| Number of I/O | 32 | 32 |
| Supply Voltage (VCC) | 4.5 V to 5.5 V (at 20 MHz) | β |
| Oscillator Type | Internal | Internal |
| USART Count | 2 (P variant dual USART) | β |
| Timers | Two 8-bit, one 16-bit | β |
| ADC | 8-channel, 10-bit | β |
| Communication Interfaces | USART x2, SPI, TWI (I2C) | β |
| Debug Interface | JTAG (on-chip debug, boundary scan) | β |
| Instruction Set | 131 instructions, mostly single-cycle | β |
| Low Power Technology | picoPower | β |
| Operating Temperature | -40C to +105C (extended, M grade) | β |
| Package / Case | 44-VQFN (7x7 mm) exposed pad (MLF) | β |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) |
| RoHS / Green Status | GREEN, RoHS compliant | β |
| Core Architecture | β | AVR 8-bit RISC |
| CPU Speed | β | 20 MHz |
| Throughput | β | Up to 20 MIPS (1 MIPS per MHz) |
| Operating Voltage | β | 5 V |
| Digital Communication Peripherals | β | 2 UART |
| Instructions | β | 131 powerful instructions, most single-cycle |
| Package | β | 44-VQFN (7x7 mm) with exposed pad |
| Temperature Grade | β | Industrial, extended temperature |
| Technology Feature | β | picoPower low-power, green/RoHS |
| Programming | β | ICSP via 2 I/O pins + reset, MPLAB SNAP compatible |
| Lifecycle | β | Mature; NRND - replaced by ATmega644PA |