ATMEGA644A-AUR vs ATMEGA644-20AU Comparison
Detailed side-by-side comparison of ATMEGA644A-AUR by Microchip Technology and ATMEGA644-20AU 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
ATMEGA644-20AU - 8-Bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644-20AU NrndSpecification Comparison
| Parameter | ATMEGA644A-AUR | ATMEGA644-20AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Nrnd |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.75 | $4.96 |
| 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 | 4 KB |
| EEPROM | 2 KB | 2 KB |
| I/O Lines | 32 general purpose | β |
| USART | 2 programmable serial USARTs | β |
| Timer/Counters | 3 with compare modes and PWM | 2 x 8-bit, 1 x 16-bit with compare and PWM modes |
| 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-TQFP (10x10 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | Industrial temperature range | β |
| Supply Voltage | [DATA_NEEDED: supply voltage range] | β |
| RoHS Status | Compliant | Compliant |
| Life Cycle Stage | ACTIVE | β |
| Program Memory | β | 64 KB In-System Programmable Flash (32K x 16) |
| Maximum Clock Frequency | β | 20 MHz |
| Throughput | β | Up to 20 MIPS at 20 MHz |
| Operating Voltage Range | β | 2.7 V to 5.5 V |
| General Purpose I/O Pins | β | 32 |
| General Purpose Working Registers | β | 32 |
| USART Interfaces | β | 2 |
| Two-Wire Serial Interface | β | 1 (byte-oriented, I2C compatible) |
| SPI Interface | β | 1 (master/slave) |
| Operating Temperature Range | β | -40C to +85C |
| Debug Interface | β | JTAG (IEEE 1149.1) with on-chip debug |
| Sleep Modes | β | 6 (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) |