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ATMEGA168-20AU ATMEGA168-20AU is an 8-bit AVR microcontroller from Microchip Technology with 16KB Flash memory, 1KB RAM, and 512B EEPROM. It operates at up to 20MHz and features 23 I/O pins, I²C, SPI, and UART interfaces.
Mfr Part #:

ATMEGA168-20AU

Available from 3 distributors
Mfr Name: Microchip Technology
Microchip Technology
ATMEGA168-20AU is an 8-bit AVR microcontroller from Microchip Technology with 16KB Flash memory, 1KB RAM, and 512B EEPROM. It operates at up to 20MHz and features 23 I/O pins, I²C, SPI, and UART interfaces.
✓ Total Stock: 19,141 pcs

ATMEGA168-20AU Available from 3 distributors

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Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
8,777 pcs
On Request
8777 pcs On Request 1 On Request On Request On Request On Request On Request
Fe Components ✓
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8,726 pcs
On Request
8726 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
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1,638 pcs
On Request
1638 pcs On Request 1 On Request On Request On Request On Request On Request
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ATMEGA168-20AU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
EEPROM Size
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
Speed
Supplier Device Package
Voltage
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ATMEGA168-20AU Description

Short technical summary and product information.

The ATMEGA168-20AU is a high-performance 8-bit AVR microcontroller from Microchip Technology, part of the ATmega family. It features 16KB of in-system self-programmable Flash memory, 1KB SRAM, and 512B EEPROM for data storage. The device operates at a maximum clock frequency of 20 MHz, delivering up to 20 MIPS throughput. It includes 23 general-purpose I/O lines, a 10-bit ADC with 8 channels, three timers (two 8-bit, one 16-bit), and six PWM channels. Connectivity options include I²C, SPI, and USART interfaces. The microcontroller is housed in a 32-TQFP package with a 7x7 mm body, suitable for surface-mount assembly. It operates over a supply voltage range of 2.7V to 5.5V, although 20 MHz operation requires 4.5V to 5.5V. The operating temperature range is -40°C to +85°C. Peripherals include brown-out detection, power-on reset, and a watchdog timer. This microcontroller is suitable for a wide range of embedded applications, including industrial control, sensor interfacing, and consumer electronics.

ATMEGA168-20AU Quick Information

Product Type: Microcontroller
Series: ATmega
Canonical Name: Microchip Technology ATMEGA168-20AU AVR 8-bit Microcontroller
Subcategory: 8-bit AVR Microcontroller

ATMEGA168-20AU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

ATMEGA168-20AU Features

  • 8-bit AVR core with 20 MHz maximum speed.
  • 16KB Flash program memory and 1KB SRAM.
  • 8-channel 10-bit ADC and six PWM channels.
  • Supports I²C, SPI, and USART interfaces.
  • 23 I/O pins in 32-TQFP surface-mount package.

ATMEGA168-20AU Applications

  • Ideal for industrial control and automation systems.
  • Used in sensor interfacing and data acquisition.
  • Suitable for consumer electronics and IoT devices.
  • Applicable in motor control and PWM generation.

ATMEGA168-20AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the ATMEGA168-20AU?

The supply voltage range is 2.7V to 5.5V, but operation at 20 MHz requires 4.5V to 5.5V.

What is the package type of the ATMEGA168-20AU?

It is available in a 32-TQFP package (7x7 mm) for surface-mount assembly.

What is the operating temperature range?

-40°C to +85°C (TA).

Is the ATMEGA168-20AU RoHS compliant?

It is listed as RoHS3 Compliant, but this status is unverified and has low confidence.

How much program memory does the ATMEGA168-20AU have?

16KB of Flash memory (8K x 16).

What interfaces are available?

I²C, SPI, and UART/USART.

How many I/O pins does it have?

23 I/O pins.

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