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