Model No: ATMEGA1281-16AU
Microchip Technology ATMEGA1281-16AU
Manufacturer: Microchip Technology
SEMICON NO.: ATMEGA1281-16AU
Package: 64-TQFP
Stock: In stock
Description: AVR MCU IC 8-Bit 16MHz 128KB FLASH
SEMICON NO.: ATMEGA1281-16AU
Package: 64-TQFP
Stock: In stock
Description: AVR MCU IC 8-Bit 16MHz 128KB FLASH
Quantity :
| Mfr | Microchip Technology |
| Device Type | 8-bit CMOS Microcontroller (MCU) |
| Core Architecture | AVR |
| Core Size | 8-Bit |
| Maximum CPU Speed | 16 MHz |
| Performance | Up to 16 MIPS |
| Program Memory (Flash) | 128 KB (64K x 16) |
| SRAM | 8 KB (8K x 8) |
| EEPROM | 4 KB (4K x 8) |
| Analog-to-Digital Converter | 8-channel, 10-bit ADC |
| Analog Comparator | 1x |
| General-Purpose I/O Pins | 54 |
| Communication Interfaces | I²C (1x), SPI (1x), UART/USART (2x), EBI/EMI |
| Timers/Counters | 6 |
| PWM Channels | 10 |
| Operating Voltage | 2.7 V to 5.5 V |
| Operating Temperature | -40°C to +85°C |
| Package | 64-TQFP |
| Mounting Type | Surface Mount |
| Compliance | RoHS Compliant |
The ATMEGA1281-16AU is a high-performance 8-bit AVR RISC microcontroller from Microchip Technology, housed in a 64-pin 10x10mm TQFP package. It features 128KB of in-system self-programmable Flash, 8KB SRAM, 4KB EEPROM, and a maximum 16MHz operating clock, integrating rich analog and digital peripherals, making it a widely deployed, mature 8-bit MCU solution for mid-complexity embedded applications.
Key Features and Highlights
● High Core Performance: Executes single-cycle instructions at 16MHz clock, delivering 16 MIPS processing performance, far exceeding the execution efficiency of traditional 8051 architecture MCUs.
● Large Non-Volatile Memory Capacity: Equipped with 128KB system Flash, 4KB independent EEPROM, and 8KB SRAM, supporting large program code volume and extensive runtime data buffering.
● Abundant Peripheral Integration: Includes a 10-channel 10-bit ADC, two 8-bit timers, four 16-bit timers, UART/SPI/I2C interfaces, and a hardware Two-Wire Interface, eliminating most external expansion chips.
● Advanced Low-Power Modes: Supports six distinct power-saving sleep modes, with typical power consumption down to less than 1µA in power-down state, extending battery life for portable devices.
● High 5V I/O Compatibility: All general-purpose I/O pins support 5V TTL level, with 20mA source/sink current capability, directly driving LEDs and small relays without extra buffer circuits.
Frequently Asked Questions (FAQ)
Q: What is the core advantage of this AVR MCU over 8051 MCUs?
A: It uses a single-cycle RISC architecture, has far larger on-chip memory, richer integrated peripherals, and supports in-system self-programming, delivering significantly higher performance and design flexibility.
● High Core Performance: Executes single-cycle instructions at 16MHz clock, delivering 16 MIPS processing performance, far exceeding the execution efficiency of traditional 8051 architecture MCUs.
● Large Non-Volatile Memory Capacity: Equipped with 128KB system Flash, 4KB independent EEPROM, and 8KB SRAM, supporting large program code volume and extensive runtime data buffering.
● Abundant Peripheral Integration: Includes a 10-channel 10-bit ADC, two 8-bit timers, four 16-bit timers, UART/SPI/I2C interfaces, and a hardware Two-Wire Interface, eliminating most external expansion chips.
● Advanced Low-Power Modes: Supports six distinct power-saving sleep modes, with typical power consumption down to less than 1µA in power-down state, extending battery life for portable devices.
● High 5V I/O Compatibility: All general-purpose I/O pins support 5V TTL level, with 20mA source/sink current capability, directly driving LEDs and small relays without extra buffer circuits.
Frequently Asked Questions (FAQ)
Q: What is the core advantage of this AVR MCU over 8051 MCUs?
A: It uses a single-cycle RISC architecture, has far larger on-chip memory, richer integrated peripherals, and supports in-system self-programming, delivering significantly higher performance and design flexibility.
Compatible Alternative 8-bit AVR MCU List
● ATMEGA2561-16AU: A pin-compatible higher-density variant with 256KB Flash, doubling program space for more complex application logic.
● ATMEGA1280-16AU: A fully pin-to-pin compatible AVR MCU with identical memory specs, offering broad second-source availability for high-volume production.
● STM32F103RCT6: A 32-bit ARM Cortex-M3 MCU in 64-pin LQFP package, providing a significant performance upgrade path for users needing higher processing power.
● PIC18F87K22-I/PT: A high-performance 8-bit PIC MCU from Microchip, serving as a mature cross-architecture alternative for industrial control scenarios.
● ATMEGA2561-16AU: A pin-compatible higher-density variant with 256KB Flash, doubling program space for more complex application logic.
● ATMEGA1280-16AU: A fully pin-to-pin compatible AVR MCU with identical memory specs, offering broad second-source availability for high-volume production.
● STM32F103RCT6: A 32-bit ARM Cortex-M3 MCU in 64-pin LQFP package, providing a significant performance upgrade path for users needing higher processing power.
● PIC18F87K22-I/PT: A high-performance 8-bit PIC MCU from Microchip, serving as a mature cross-architecture alternative for industrial control scenarios.
