ATMEGA2561-16AUR vs ATMEGA640-16AUR Comparison
Detailed side-by-side comparison of ATMEGA2561-16AUR 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
ATMEGA2561-16AUR - 8-bit AVR MCU 256KB 16MHz | Microchip
ATMEGA2561-16AUR β ActiveMicrochip Technology
ATMEGA640-16AUR - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA640-16AUR β ActiveSpecification Comparison
| Parameter | ATMEGA2561-16AUR | ATMEGA640-16AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $15.98 | $5.90 |
| Core Architecture | 8-bit AVR RISC | β |
| Flash Memory | 256 KB (128K x 16), ISP programmable | 64 KB (32K x 16) |
| SRAM | 8 KB | 8 KB |
| EEPROM | 4 KB | 4 KB |
| Maximum CPU Speed | 16 MHz | β |
| Throughput | 16 MIPS at 16 MHz | β |
| Operating Voltage Range | 4.5 V to 5.5 V | β |
| General Purpose I/O | 54 I/O lines | β |
| Working Registers | 32 general purpose registers | β |
| Timer/Counters | Six flexible timer/counters with compare modes and PWM | β |
| USART | Four programmable serial USART | 2 (programmable serial USART) |
| ADC | 8-channel, 10-bit | β |
| Serial Interfaces | SPI, TWI (I2C-compatible 2-wire) | β |
| Analog Comparator | On-chip, 1 channel | β |
| Watchdog Timer | Programmable, with separate on-chip oscillator | Programmable, with separate on-chip oscillator |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Package | 64-TQFP (14 x 14 mm) | 100-TQFP (14x14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Real-Time Counter | Yes, with separate oscillator (TOSC1/TOSC2) | β |
| Pin Change Interrupt | Interrupt and wake-up on pin change | β |
| 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 |
| GPIO Count | β | 86 |
| Timers/Counters | β | 6 (flexible timer/counters) |
| ADC Resolution | β | 10-bit |
| ADC Channels | β | 8/16-channel |
| SPI | β | Yes (master/slave SPI serial interface) |
| TWI (I2C) | β | Yes (byte-oriented 2-wire serial interface) |
| Packaging | β | Tape & Reel (R suffix) |