ATMEGA644PA-MU vs ATMEGA644P-20MQ Comparison
Detailed side-by-side comparison of ATMEGA644PA-MU 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
ATMEGA644PA-MU - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644PA-MU ✓ ActiveMicrochip Technology
ATMEGA644P-20MQ - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644P-20MQ NrndSpecification Comparison
| Parameter | ATMEGA644PA-MU | ATMEGA644P-20MQ |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | NRND |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.78 | $2.48 |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Core Frequency | 20 MHz | — |
| Flash Memory | 64 KB (32K x 16) ISP Flash, read-while-write | — |
| EEPROM | 2 KB | 2 KB (2,048 bytes) |
| SRAM | 4 KB | 4 KB (4,096 bytes) |
| GPIO Count | 32 | — |
| MIPS Throughput | Up to 20 MIPS at 20 MHz | — |
| Instructions | 131 instructions, most single-cycle | 131 powerful instructions, most single-cycle |
| Timer/Counters | Three flexible timer/counters with compare modes and PWM | — |
| USART | Two programmable serial USARTs | — |
| Serial Interfaces | Two-Wire Interface (I2C-compatible), SPI | — |
| ADC | 8-channel 10-bit ADC | — |
| RTC | Real Time Counter with separate oscillator | — |
| Low Power Technology | picoPower | — |
| Supply Voltage Range | 2.5 V / 3.3 V / 5 V class (per distributor listing: 2.5V/3.3V/5V) | — |
| Package | 44-VQFN (7x7 mm), exposed pad | 44-VQFN (7x7 mm) with exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | RoHS compliant (per Microchip product listing) | — |
| Data Sheet Document Number | DS40002070A (per Microchip ATMEGA644PA-MU data sheet) | — |
| CPU Speed | — | 20 MHz |
| Throughput | — | Up to 20 MIPS (1 MIPS per MHz) |
| Flash Program Memory | — | 64 KB (32K x 16) |
| Operating Voltage | — | 5 V |
| Number of I/O | — | 32 |
| Digital Communication Peripherals | — | 2 UART |
| Oscillator Type | — | Internal |
| Temperature Grade | — | Industrial, extended temperature |
| Packaging | — | Tape & Reel (TR) |
| Technology Feature | — | picoPower low-power, green/RoHS |
| Programming | — | ICSP via 2 I/O pins + reset, MPLAB SNAP compatible |
| Lifecycle | — | Mature; NRND - replaced by ATmega644PA |