ATMEGA640-16AUR vs ATMEGA1281-16AUR Comparison
Detailed side-by-side comparison of ATMEGA640-16AUR by Microchip Technology and ATMEGA1281-16AUR 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
ATMEGA640-16AUR - 8-bit AVR MCU 64KB Flash 16MHz TQFP-100 | Microchip
ATMEGA640-16AUR ✓ ActiveMicrochip Technology
ATMEGA1281-16AUR - 8-Bit AVR MCU 128KB Flash 16MHz | Microchip (Tape & Reel)
ATMEGA1281-16AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA640-16AUR | ATMEGA1281-16AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Architecture | 8-bit AVR RISC | AVR 8-bit RISC |
| Program Memory (Flash) | 64 KB (32K x 16) | — |
| SRAM | 8 KB | 8 KB (8K x 8) |
| EEPROM | 4 KB | 4 KB (4K x 8) |
| Maximum CPU Clock | 16 MHz | — |
| Operating Voltage (Vcc) | 4.5 V to 5.5 V | — |
| General-Purpose I/O Lines | 86 | — |
| General-Purpose Working Registers | 32 | — |
| Timer/Counters | 6 flexible timer/counters with compare/PWM | — |
| ADC | 10-bit, 8/16-channel | 8-channel 10-bit |
| USART | 2 programmable serial USARTs | — |
| SPI | 1 master/slave SPI | — |
| TWI (I2C-compatible) | 1 byte-oriented 2-wire interface | — |
| Analog Comparator | On-chip | — |
| Watchdog Timer | Programmable, with separate on-chip oscillator | — |
| Package | 100-pin TQFP (14x14 mm) | 64-TQFP (14 x 14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C |
| In-System Programmable (ISP) | Yes | — |
| RoHS Status | Compliant | Green / RoHS compliant (per Jotrin: GREEN packaging) |
| Maximum Clock Frequency | — | 16 MHz |
| Flash Memory | — | 128 KB (64K x 16) ISP FLASH |
| Supply Voltage | — | 2.7 V to 5.5 V |
| I/O Pins | — | 54 |
| USARTs | — | 2 |
| Data Bus Width | — | 8 Bit |
| Oscillator Type | — | Internal |
| Life Cycle Stage | — | ACTIVE |