ATMEGA645A-AUR vs ATMEGA640-16AUR Comparison
Detailed side-by-side comparison of ATMEGA645A-AUR by Microchip Technology and ATMEGA640-16AUR 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
ATMEGA645A-AUR - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AUR β ActiveMicrochip Technology
ATMEGA640-16AUR - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA640-16AUR β ActiveSpecification Comparison
| Parameter | ATMEGA645A-AUR | ATMEGA640-16AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.68 | $5.90 |
| Core Architecture | 8-bit AVR RISC | β |
| Max Operating Frequency | 16 MHz | β |
| Flash Memory | 64 KB (32K x 16) ISP FLASH | 64 KB (32K x 16) |
| EEPROM | 2 KB | 4 KB |
| SRAM | 4 KB | 8 KB |
| Operating Voltage Range | 2.5 V / 3.3 V / 5 V (per datasheet family listing) | β |
| General Purpose I/O | 54 I/O lines | β |
| Working Registers | 32 x 8-bit | β |
| ADC | 10-bit, 8 channels | β |
| LCD Controller | Yes, segment driver (megaAVR LCD family) | β |
| Timers | Two 8-bit, one 16-bit | β |
| Serial Interfaces | 2 x USART, SPI, TWI (I2C compatible) | β |
| Debug / Programming | JTAG, ICSP (In-Circuit Serial Programming) | β |
| Package | 64-TQFP (14 x 14 mm) | 100-TQFP (14x14 mm) |
| Operating Temperature (Max) | 85 C | β |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (R suffix) | Tape & Reel (R suffix) |
| RoHS Status | Compliant | Compliant |
| Core | β | AVR 8-bit RISC |
| Core Size | β | 8-bit |
| Max Clock Frequency | β | 16 MHz |
| Supply Voltage Range | β | 4.5 V to 5.5 V |
| Operating Temperature | β | -40C to +85C (industrial) |
| GPIO Count | β | 86 |
| Timers/Counters | β | 6 (flexible timer/counters) |
| ADC Resolution | β | 10-bit |
| ADC Channels | β | 8/16-channel |
| USART | β | 2 (programmable serial USART) |
| SPI | β | Yes (master/slave SPI serial interface) |
| TWI (I2C) | β | Yes (byte-oriented 2-wire serial interface) |
| Watchdog Timer | β | Programmable, with separate on-chip oscillator |