ATMEGA128-16AI vs ATMEGA1281-16MUR Comparison
Detailed side-by-side comparison of ATMEGA128-16AI by Microchip Technology and ATMEGA1281-16MUR 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
ATMEGA128-16AI - 8-bit AVR MCU 16MHz 128KB Flash | Microchip
ATMEGA128-16AI ✓ ActiveMicrochip Technology
ATMEGA1281-16MUR - 8-Bit AVR MCU 16MHz 128KB Flash | Microchip
ATMEGA1281-16MUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA128-16AI | ATMEGA1281-16MUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Architecture | AVR 8-bit RISC | — |
| CPU Speed | 16 MHz | — |
| Flash Memory | 128 KB (64K x 16) In-System Programmable | — |
| SRAM | 4 KB | — |
| EEPROM | 4 KB | — |
| Operating Voltage | 4.5 V to 5.5 V | — |
| MIPS Throughput | 16 MIPS at 16 MHz | — |
| ADC | 8-channel 10-bit | — |
| Timers/Counters | Two 8-bit, Two 16-bit | 6 (flexible, with compare modes and PWM) |
| Communication Interfaces | SPI, TWI (I2C), 2x USART | — |
| JTAG | On-chip JTAG for debugging and boundary scan | — |
| Instructions | 133 instructions, most single-cycle | — |
| Package | 64-TQFP (14x14 mm) | 64-QFN (9x9 mm), VFQFN exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial, per AI suffix) | — |
| External Memory Interface | XMEM up to 64 KB | — |
| RoHS Status | unknown | — |
| Core | — | AVR 8-bit RISC |
| Maximum Clock Frequency | — | 16 MHz |
| Program Memory Size | — | 128 KB (64K x 16) Flash |
| SRAM Size | — | 8 KB |
| EEPROM Size | — | 4 KB |
| Supply Voltage Range | — | 2.7 V to 5.5 V |
| Number of I/O Lines | — | 54 |
| General Purpose Working Registers | — | 32 |
| USART Channels | — | 4 |
| Serial Interfaces | — | TWI (I2C-compatible), SPI |
| ADC Channels | — | 16-channel |
| Data Bus Width | — | 8 Bit |
| Temperature Range | — | Industrial (-40C to +85C) |
| Life Cycle Stage | — | Active |