ATMEGA644A-AUR vs ATMEGA644PA-AUR Comparison
Detailed side-by-side comparison of ATMEGA644A-AUR by Microchip Technology and ATMEGA644PA-AUR 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
ATMEGA644A-AUR - 8-bit AVR MCU 64KB Flash 20MHz TQFP-44 | Microchip
ATMEGA644A-AUR β ActiveMicrochip Technology
ATMEGA644PA-AUR - 8-Bit AVR MCU 64KB Flash 20MHz TQFP-44 | Microchip
ATMEGA644PA-AUR β ActiveSpecification Comparison
| Parameter | ATMEGA644A-AUR | ATMEGA644PA-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.75 | $1.78 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC (Harvard) |
| Max Clock Frequency | 20 MHz | β |
| Flash Memory | 64 KB (32K x 16), In-System Programmable, Read-While-Write | β |
| SRAM | 4 KB | 4 KB |
| EEPROM | 2 KB | 2 KB |
| I/O Lines | 32 general purpose | β |
| USART | 2 programmable serial USARTs | 2 |
| Timer/Counters | 3 with compare modes and PWM | β |
| ADC | 8-channel, 10-bit, optional differential input | 8-channel 10-bit |
| Serial Interfaces | 2-wire (TWI/I2C), SPI, 2x USART | TWI (I2C-compatible), SPI |
| Real Time Counter | Yes (RTC) | β |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10 x 10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | Industrial temperature range | β |
| Supply Voltage | [DATA_NEEDED: supply voltage range] | 2.5 V / 3.3 V / 5 V operation |
| RoHS Status | Compliant | Compliant (GREEN) |
| Life Cycle Stage | ACTIVE | β |
| Flash Memory (ISP) | β | 64 KB (32K x 16) with read-while-write |
| Maximum Clock Frequency | β | 20 MHz |
| Maximum Throughput | β | 20 MIPS (1 MIPS per MHz) |
| Instructions | β | 131 instructions, mostly single-clock cycle |
| Hardware Multiplier | β | On-chip 2-cycle multiplier |
| General Purpose I/O | β | 32 lines |
| Working Registers | β | 32 general purpose |
| Timers/Counters | β | 3 flexible timer/counters with compare modes and PWM |
| Real-Time Counter | β | Yes |
| Low Power Technology | β | picoPower |
| Packaging | β | Tape & Reel (T/R) |