ATMEGA2561-16MU vs ATMEGA1281-16AU Comparison
Detailed side-by-side comparison of ATMEGA2561-16MU by Microchip Technology and ATMEGA1281-16AU 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
ATMEGA2561-16MU - 8-bit AVR MCU 256KB Flash 16MHz 64-QFN | Microchip
ATMEGA2561-16MU ✓ ActiveMicrochip Technology
ATMEGA1281-16AU - 8-Bit AVR MCU 128KB Flash 16MHz | Microchip
ATMEGA1281-16AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA2561-16MU | ATMEGA1281-16AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $11.83 | $8.27 |
| Core Architecture | AVR 8-bit RISC | AVR 8-bit RISC |
| Maximum CPU Frequency | 16 MHz | — |
| MIPS Throughput | 16 MIPS | — |
| Program Flash Memory | 256 KB (128K x 16) | — |
| SRAM | 8 KB | 8 KB (8K x 8) |
| EEPROM | 4 KB | 4 KB (4K x 8) |
| Operating Voltage (VCC) | 4.5 V to 5.5 V | — |
| Programmable I/O Lines | 54 | — |
| General-Purpose Working Registers | 32 | — |
| ADC | 8-channel, 10-bit | 8-channel 10-bit |
| USART | 4 channels | — |
| SPI | 1 channel (Master/Slave) | — |
| TWI (I2C) | 1 channel (byte-oriented) | — |
| Timer/Counters | 2x 8-bit + 4x 16-bit with PWM | — |
| Watchdog Timer | Yes, with separate on-chip oscillator | — |
| Analog Comparator | On-chip, with selectable hysteresis | — |
| JTAG Debug Interface | Yes (boundary-scan capable) | — |
| External Memory Interface (EBI/EMI) | Yes | — |
| Package | 64-VFQFN (9x9 mm) with exposed pad | 64-TQFP (14 x 14 mm) |
| Operating Temperature | -40 C to +85 C (industrial) | -40C to +85C |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | [DATA_NEEDED: MSL level] | — |
| Lead-Free / RoHS | Yes / Compliant | — |
| 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 |
| RoHS Status | — | Green / RoHS compliant (per Jotrin: GREEN packaging) |