ATMEGA644-20MUR vs ATMEGA644PA-MU Comparison
Detailed side-by-side comparison of ATMEGA644-20MUR by Microchip Technology and ATMEGA644PA-MU 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
ATMEGA644-20MUR - 8-bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644-20MUR β ActiveMicrochip Technology
ATMEGA644PA-MU - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644PA-MU β ActiveSpecification Comparison
| Parameter | ATMEGA644-20MUR | ATMEGA644PA-MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.05 | $3.78 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Max Clock Frequency | 20 MHz | β |
| Program Memory (Flash) | 64KB (32K x 16) | β |
| SRAM | 4KB | 4 KB |
| EEPROM | 2KB | 2 KB |
| Supply Voltage Range | 4.5 V to 5.5 V | 2.5 V / 3.3 V / 5 V class (per distributor listing: 2.5V/3.3V/5V) |
| Data Bus Width | 8 Bit | β |
| General Purpose I/O | 32 I/O lines | β |
| Timers/Counters | 3 (with compare modes and PWM) | β |
| Communication Interfaces | USART, SPI, TWI (I2C) | β |
| ADC | 10-bit | 8-channel 10-bit ADC |
| Programming Interface | ICSP (In-Circuit Serial Programming), debugWIRE | β |
| Operating Temperature | Industrial (-40C to +85C) | β |
| Package | 44-VQFN (7x7 mm) Exposed Pad | 44-VQFN (7x7 mm), exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| RoHS Status | [DATA_NEEDED: RoHS status] | RoHS compliant (per Microchip product listing) |
| Lifecycle Stage | ACTIVE | β |
| Core Frequency | β | 20 MHz |
| Flash Memory | β | 64 KB (32K x 16) ISP Flash, read-while-write |
| GPIO Count | β | 32 |
| MIPS Throughput | β | Up to 20 MIPS at 20 MHz |
| Instructions | β | 131 instructions, most single-cycle |
| Timer/Counters | β | Three flexible timer/counters with compare modes and PWM |
| USART | β | Two programmable serial USARTs |
| Serial Interfaces | β | Two-Wire Interface (I2C-compatible), SPI |
| RTC | β | Real Time Counter with separate oscillator |
| Low Power Technology | β | picoPower |
| Data Sheet Document Number | β | DS40002070A (per Microchip ATMEGA644PA-MU data sheet) |