ATmega168PA-AU is a high-performance, low-power 8-bit AVR microcontroller featuring 16KB ISP flash memory, 1KB EEPROM, 1KB SRAM, 23 general-purpose I/O lines, and a wide range of peripherals. It operates at up to 20 MHz, making it ideal for a wide range of applications.



Atmega168 PA-AU is a high performance, low power 8-bit AVR microcontroller. It is designed for use in a wide range of applications, including industrial controls, consumer electronics and automotive systems.

Atmega168 PA-AU has a maximum clock frequency of 20 MHz and is capable of executing instructions at speeds of up to 20 MIPS. It has 16 KB of in-system self-programmed flash memory, 1 KB of EEPROM, and 1 KB of SRAM. The microcontroller features 23 universal I/O lines, a 6-channel 10-bit ADC, and a range of communication interfaces, including USART, SPI, and I2C.

Atmega168 PA-AU is designed to operate over a wide voltage range of 1.8V to 5.5V, making it suitable for battery powered and low voltage applications. It also has a low-power sleep mode, which can be used to reduce power consumption when the device is idle.

The microcontroller is packaged in a 32-pin TQFP package and meets RoHS standards. It is rated for industrial temperature ranges (-40°C to +85°C) with excellent EMI and ESD performance.

The Atmega168 PA-AU microcontroller is supported by the Atmel Studio Integrated development environment (IDE) and is compatible with a variety of third-party development tools. The IDE includes an assembler, a compiler, an emulator, and a debugger to make it easy to develop, test, and debug the code for the microcontroller.


  • Industrial control
  • Consumer electronics
  • Automobile system
  • Medical equipment
  • Home automation
  • Safety system


  • 8 bit AVR microcontroller
  • Maximum clock frequency of 20 MHz
  • 16 KB of in-system self-programming flash memory
  • 1 KB  EEPROM
  • 1 KB  SRAM
  • Twenty-three universal I/O cables
  • 6-channel 10-bit ADC
  • USART, SPI and I2C communication interface
  • Wide voltage range: 1.8V to 5.5V

  • Low power sleep mode
  • Meet RoHS standard
  • 32 pin TQFP package
  • Industrial temperature range (-40°C to +85°C)

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