Microchip Technology ATMEGA1281V-8AU

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Tray |
Core Processor AVR
Core Size 8-Bit
Speed 8MHz
Connectivity EBI/EMI, I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 54
Program Memory Size 128KB (64K x 16)
Program Memory Type FLASH
EEPROM Size 4K x 8
RAM Size 8K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 8x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-TQFP (14x14)
Package / Case 64-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA1281V-8AU is a high-performance 8-bit AVR microcontroller from Microchip Technology, designed for low-power and reliable embedded control. It operates at speeds up to 8MHz and supports a wide voltage range from 1.8V to 5.5V, making it flexible for various power supply designs. With 128KB of flash memory and 8KB of SRAM, it provides substantial resources for complex applications. The device includes essential safety features like Brown-out Detection, Power-on Reset, and a Watchdog Timer, ensuring robust operation in demanding environments.

  • Ultra-Low Power Operation: Supports 1.8V supply, reducing energy consumption in battery-powered designs.
  • Large Memory Footprint: 128KB flash and 8KB SRAM enable complex firmware and data buffering.
  • Integrated Safety Features: BOD, POR, and WDT enhance system reliability and prevent data corruption.
  • Wide Temperature Range: -40°C to 85°C ensures functionality in extreme conditions.

Low-Power Sensor Nodes

With a supply voltage range starting at 1.8V and an 8MHz clock, this MCU is ideal for battery-powered environmental sensors that require extended operation without frequent battery changes.

Industrial Control Panels

The 128KB flash memory and 8KB SRAM provide ample space for control algorithms and data logging in industrial automation, while the -40°C to 85°C temperature range ensures reliable operation in harsh environments.

Portable Medical Devices

The low-voltage operation and integrated POR/Brown-out detection make it suitable for handheld diagnostic tools where power stability and data integrity are critical.

Automotive Aftermarket Modules

Its robust feature set, including PWM and WDT, supports applications like window lift controllers or seat position memories that need deterministic timing and fault recovery.

Smart Grid Meters

The 64-TQFP package and 8MHz speed allow for efficient implementation of metering protocols, while the 128KB program memory can store calibration data and communication stacks.

Robotics Hobby Kits

For educational robots, the AVR core with PWM outputs can drive multiple servo motors, and the 8KB SRAM is sufficient for sensor fusion algorithms.

Q: What is the maximum operating frequency of the ATMEGA1281V-8AU?
A: The maximum operating frequency is 8MHz at a supply voltage range of 1.8V to 5.5V.
Q: How much flash memory does this MCU have?
A: It has 128KB of in-system programmable flash memory, organized as 64K x 16 bits.
Q: What package is the ATMEGA1281V-8AU available in?
A: It comes in a 64-pin TQFP package.
Q: Does it include a watchdog timer?
A: Yes, it features a Watchdog Timer (WDT) along with Brown-out Detect/Reset, POR, and PWM.
Base Product Number : ATMEGA1281V
128KB Flash 64-TQFP 8-bit MCU 8KB SRAM 8MHz ATMEGA1281V AVR Industrial Low Power Medical PWM WDT
Q: What is the maximum operating frequency of the ATMEGA1281V-8AU?
A: The maximum operating frequency is 8MHz at a supply voltage range of 1.8V to 5.5V.
Q: How much flash memory does this MCU have?
A: It has 128KB of in-system programmable flash memory, organized as 64K x 16 bits.
Q: What package is the ATMEGA1281V-8AU available in?
A: It comes in a 64-pin TQFP package.
Q: Does it include a watchdog timer?
A: Yes, it features a Watchdog Timer (WDT) along with Brown-out Detect/Reset, POR, and PWM.