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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 20MHz
Connectivity I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 23
Program Memory Size 16KB (8K x 16)
Program Memory Type FLASH
EEPROM Size 512 x 8
RAM Size 1K 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 32-TQFP (7x7)
Package / Case 32-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATMEGA168A is a high-performance 8-bit AVR MCU with 16 KB Flash and 1 KB SRAM. Running at up to 20 MHz, it provides six PWM channels, a 10-bit ADC, and USART/SPI/I2C interfaces. The 32-TQFP package offers a compact footprint for industrial, medical, and consumer applications requiring reliable operation from 1.8V to 5.5V.

  • High Integration: 16 KB Flash, 1 KB SRAM, and 512B EEPROM in a small package.
  • Flexible Power: 1.8V-5.5V range supports Li-ion and alkaline batteries.
  • Advanced Peripherals: 10-bit ADC, 6 PWM channels, and multiple serial interfaces.
  • Reliable Operation: Brown-out reset and watchdog timer ensure system stability.
  • Industry Standard: Widely used AVR architecture with extensive tool support.

Industrial Automation Sensors

The 20 MHz AVR core and 10-bit ADC enable precise analog signal processing in proximity and temperature sensors.

Medical Device Peripherals

With 1.8V operation and reliable brown-out detection, it suits portable glucose meters and pulse oximeters.

Smart Agriculture Monitors

Low power and wide voltage range support soil moisture and weather station nodes in remote fields.

Consumer Audio Accessories

Its PWM and UART interfaces drive LED effects and control in Bluetooth speakers and amplifiers.

Automotive Interior Lighting

Operating at -40°C to 85°C, it manages RGB LED controllers and ambient lighting modules.

Prototyping and Education

The 32-TQFP package and rich peripherals make it a staple for university embedded systems labs.

Q: What is the maximum speed of the ATMEGA168A-AU?
A: It operates at up to 20 MHz with a 1.8V-5.5V supply.
Q: How much Flash memory does it have?
A: It includes 16 KB of in-system programmable Flash.
Q: What package is this MCU?
A: It comes in a 32-pin TQFP package, suitable for surface-mount assembly.
Q: Does it have a brown-out detector?
A: Yes, it features programmable brown-out detection and reset.
Q: What are the main communication interfaces?
A: It supports USART, SPI, and I2C (TWI) protocols.
Base Product Number : ATMEGA168A
16KB Flash 20MHz 32-TQFP 8-bit MCU ADC ATMEGA AVR industrial medical PWM
Q: What is the maximum speed of the ATMEGA168A-AU?
A: It operates at up to 20 MHz with a 1.8V-5.5V supply.
Q: How much Flash memory does it have?
A: It includes 16 KB of in-system programmable Flash.
Q: What package is this MCU?
A: It comes in a 32-pin TQFP package, suitable for surface-mount assembly.
Q: Does it have a brown-out detector?
A: Yes, it features programmable brown-out detection and reset.
Q: What are the main communication interfaces?
A: It supports USART, SPI, and I2C (TWI) protocols.