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8-bit Microcontroller with 16kB Flash and 0.5kB EEPROM

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ATMEGA16-16AU DataSheet


Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

Rapid Quote

Please submit RFQ for ATMEGA16-16AU or email to us: Email: [email protected], we will contact you in 12 hours.


From its clock frequency of 16 MHz to its comprehensive set of I/O pins and communication protocols, the ATmega16-16AU embodies a powerhouse of performance within a compact form factor. Ideal for both hobbyist projects and professional applications, this MCU's flexibility and scalability make it a valuable asset in the realm of embedded systems design. With a legacy rooted in Atmel's heritage of excellence, the ATmega16-16AU continues to uphold its reputation as a cornerstone of innovation and reliability in the world of microcontroller technology


Key Features

  • 16KB Flash memory
  • 1KB SRAM
  • 512 Bytes EEPROM
  • 16MHz maximum clock speed
  • 32 general-purpose I/O pins
  • 8-channel 10-bit ADC
  • 4 PWM channels
  • 2 USARTs
  • 1 SPI interface
  • 1 I2C interface


  • Industrial automation: control systems, data acquisition
  • Consumer electronics: home automation, appliance control
  • Robotics: autonomous robots, motor control
  • Embedded systems: smart devices, IoT applications
  • Communication systems: wireless transceivers, networking devices
  • Electronic instrumentation: measurement equipment, testing devices
  • Security systems: surveillance cameras, access control systems
  • Automotive: engine control, dashboard displays
  • Healthcare: medical devices, patient monitoring systems
  • Education: teaching aids, experimental platforms


The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category ! 8-bit Microcontrollers - MCU RoHS Details
Core AVR Program Memory Size 16 kB
Data RAM Size 1 kB Package / Case TQFP-44
Maximum Clock Frequency 16 MHz ADC Resolution 10 bit
Number of I/Os 32 I/O Supply Voltage - Min 4.5 V
Supply Voltage - Max 5.5 V Mounting Style SMD/SMT
Data Bus Width 8 bit Minimum Operating Temperature - 40 C
Maximum Operating Temperature ! + 85 C Series ATmega16
Analog Supply Voltage 2.7 V to 5.5 V Brand Microchip Technology
Data RAM Type SRAM Data ROM Size 512 B
Data ROM Type EEPROM Height 1 mm
I/O Voltage 2.7 V to 5.5 V Interface Type I2C, JTAG, SPI, USART
Length 10 mm Moisture Sensitive Yes
Number of ADC Channels 8 Channel Number of Timers/Counters 3 Timer
Processor Series megaAVR Product MCUs
Product Type ! 8-bit Microcontrollers - MCU Program Memory Type ! Flash
Factory Pack Quantity 160 Subcategory Microcontrollers - MCU
Tradename AVR Watchdog Timers Watchdog Timer
Width 10 mm Unit Weight 0.056438 oz

Specification Comparison

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification ATMEGA16-16AU PDF Download


What is ATMEGA16-16AU?

The ATMEGA16-16AU is a high-performance 8-bit microcontroller from Atmel (now Microchip Technology). It is part of the AVR family of microcontrollers and is widely used in various embedded system applications such as industrial control, automation, and consumer electronics.

How Does ATMEGA16-16AU Work?

The ATMEGA16-16AU operates as a versatile microcontroller with a rich set of features including flash memory, EEPROM, SRAM, various communication interfaces, and digital I/O pins. It executes instructions from its flash memory, interacts with peripherals, and interfaces with external components to control the overall system operation.

How Many Pins does ATMEGA16-16AU have and What are the Functions of the Pinout Configuration?

The ATMEGA16-16AU is housed in a 44-pin TQFP (Thin Quad Flat Package) package. The pinout configuration includes:

  • VCC: Power supply pin.
  • GND: Ground pin.
  • XTAL1, XTAL2: Crystal oscillator pins.
  • RESET: Reset pin for initializing the microcontroller.
  • PORTx: Digital I/O pins for general-purpose communication and control.
  • RXD, TXD: UART communication pins.
  • SCL, SDA: I2C communication pins.
  • OCx: Output compare pins for PWM generation.

What are the Pros and Cons of ATMEGA16-16AU?


  • High-Performance: Offers high-speed processing capabilities for demanding applications.
  • Rich Peripherals: Includes a wide range of peripherals such as timers, UART, SPI, and ADC for versatile applications.
  • Ample Memory: Features sufficient flash memory, EEPROM, and SRAM for program storage and data retention.
  • Industry Standard: AVR microcontrollers are well-known and widely supported in the embedded systems community.
  • Cost-Effective: Provides a balance between performance and cost for various projects.


  • 8-Bit Processing: Limitation in processing power compared to higher-bit microcontrollers for complex algorithms.
  • Limited RAM: The amount of SRAM available may be insufficient for certain data-intensive applications.
  • Peripheral Sharing: Multiplexed pins may require careful handling for efficient use of peripherals.

Are There Any Equivalents/Alternatives to ATMEGA16-16AU for Recommendation?

  • The ATmega32 from Microchip Technology offers higher program memory and SRAM compared to the ATMEGA16-16AU.
  • Alternatives to the ATMEGA16-16AU include the PIC16F886 from Microchip Technology and the STM32F103C8T6 from STMicroelectronics.

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