ATMEGA644A-AUR vs ATMEGA1284-AUR Comparison
Detailed side-by-side comparison of ATMEGA644A-AUR by Microchip Technology and ATMEGA1284-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
ATMEGA1284-AUR - 8-Bit AVR MCU 128KB Flash 20MHz | Microchip
ATMEGA1284-AUR β ActiveSpecification Comparison
| Parameter | ATMEGA644A-AUR | ATMEGA1284-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.75 | $4.61 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Max Clock Frequency | 20 MHz | β |
| Flash Memory | 64 KB (32K x 16), In-System Programmable, Read-While-Write | β |
| SRAM | 4 KB | 16 KB |
| EEPROM | 2 KB | 4 KB |
| I/O Lines | 32 general purpose | β |
| USART | 2 programmable serial USARTs | β |
| Timer/Counters | 3 with compare modes and PWM | 3 flexible timer/counters with compare modes and PWM |
| ADC | 8-channel, 10-bit, optional differential input | 8-channel, 10-bit successive approximation |
| Serial Interfaces | 2-wire (TWI/I2C), SPI, 2x USART | β |
| Real Time Counter | Yes (RTC) | β |
| Package | 44-TQFP (10x10 mm) | 44-pin TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | Industrial temperature range | -40C to +85C |
| Supply Voltage | [DATA_NEEDED: supply voltage range] | β |
| RoHS Status | Compliant | Compliant |
| Life Cycle Stage | ACTIVE | β |
| Program Memory Size | β | 128 KB ISP Flash (64K x 16) |
| Maximum Clock Frequency | β | 20 MHz |
| Throughput | β | Up to 20 MIPS at 20 MHz |
| Supply Voltage Range | β | 1.8 V to 5.5 V |
| Operating Voltage (Full 20 MHz) | β | 2.7 V to 5.5 V |
| General Purpose I/O Lines | β | 32 |
| General Purpose Working Registers | β | 32 |
| Instruction Set | β | 131 powerful instructions, most single-clock cycle |
| USART Interfaces | β | 2 |
| Packaging | β | Tape & Reel |
| Lifecycle Stage | β | Active |