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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 8KB (4K x 16)
Program Memory Type FLASH
EEPROM Size 512 x 8
RAM Size 1K x 8
Voltage - Supply (Vcc/Vdd) 2.7V ~ 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 ATMEGA88-20AU is a high-performance 8-bit AVR microcontroller from Microchip Technology, delivering 20MHz operation with 8KB of flash memory. It is engineered for applications requiring a balance of processing capability and power efficiency, supporting a supply voltage range of 2.7V to 5.5V. The device integrates essential peripherals including PWM channels, a watchdog timer, and brown-out detection, all housed in a compact 32-TQFP package. Its industrial temperature range ensures reliable operation in demanding environments.

  • Wide Voltage Flexibility: Operates from 2.7V to 5.5V, simplifying design across 3.3V and 5V logic systems.
  • High-Speed AVR Core: 20MHz clock speed enables fast response times for real-time control applications.
  • Integrated Safety Features: Brown-out detection and watchdog timer enhance system reliability without external components.
  • Compact TQFP Package: 32-pin package saves PCB space while providing 23 I/O pins for peripheral interfacing.

Industrial Control Systems

The 20MHz AVR core with 8KB flash provides sufficient processing power for motor control loops and sensor interfacing in industrial environments, operating reliably from -40°C to 85°C.

Automotive Aftermarket Modules

With a wide 2.7V-5.5V supply range and robust features like Brown-out Detect and Watchdog Timer, it is ideal for automotive add-on modules such as window lift controllers or seat memory units.

Smart Sensor Nodes

Its low-power sleep modes and integrated PWM allow for efficient duty-cycled sensor nodes in building automation, transmitting data over I2C or SPI.

Battery-Powered Handheld Tools

The 5.5V maximum supply voltage allows direct operation from 4xAA batteries, while the 1KB SRAM handles simple user interface logic for handheld diagnostic tools.

Consumer Appliances

In appliances like coffee makers or air purifiers, the ATMEGA88-20AU manages keypads, displays, and heater elements with its 23 I/O pins and PWM outputs.

Prototyping and Education

Its 32-TQFP package is breadboard-friendly with adapters, and the 8KB flash is ample for learning embedded C programming and implementing basic RTOS tasks.

Q: What is the operating voltage range of the ATMEGA88-20AU?
A: The ATMEGA88-20AU operates from 2.7V to 5.5V, making it suitable for both 3.3V and 5V systems.
Q: What is the maximum clock speed?
A: It supports a maximum clock speed of 20MHz.
Q: How much flash memory does it have?
A: It features 8KB of in-system programmable flash memory.
Q: What package is this device available in?
A: It comes in a 32-pin TQFP package.
Q: Does it include analog comparators?
A: Yes, it includes an analog comparator in addition to other peripherals like PWM and WDT.
Base Product Number : ATMEGA88
20MHz 8-bit MCU 8KB Flash ATmega88 Automotive AVR Industrial Microchip PWM TQFP-32 WDT
Q: What is the operating voltage range of the ATMEGA88-20AU?
A: The ATMEGA88-20AU operates from 2.7V to 5.5V, making it suitable for both 3.3V and 5V systems.
Q: What is the maximum clock speed?
A: It supports a maximum clock speed of 20MHz.
Q: How much flash memory does it have?
A: It features 8KB of in-system programmable flash memory.
Q: What package is this device available in?
A: It comes in a 32-pin TQFP package.
Q: Does it include analog comparators?
A: Yes, it includes an analog comparator in addition to other peripherals like PWM and WDT.