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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Cut Tape (CT) | Tape & Reel (TR)
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) 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-VQFN (5x5)
Package / Case 32-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATMEGA88A-MUR is a popular 8-bit AVR MCU with 8KB flash and 1KB SRAM. Running at 20MHz, it offers a rich set of peripherals including PWM and brown-out detection. Housed in a 32-VFQFN package, it operates from 1.8V to 5.5V, ideal for hobbyist and industrial projects.

  • High compatibility: Drop-in replacement for many existing AVR designs, easing supply chain management.
  • Low power consumption: Multiple sleep modes extend battery life in portable devices.
  • Robust reset and brown-out detection: Ensures reliable operation in noisy environments.
  • Compact QFN package: Saves PCB space while providing good thermal dissipation.

Arduino-Compatible Prototyping

As a core AVR chip, it is widely used in custom Arduino boards, enabling rapid development of IoT prototypes with 20MHz speed.

Sensor Data Logging

With 1KB SRAM and 8KB flash, it can store calibration data and log sensor readings in environmental monitoring systems.

Small Appliance Control

PWM outputs and brown-out detection make it suitable for controlling heating elements or small motors in coffee makers and air purifiers.

LED Lighting Control

Multiple PWM channels allow for smooth dimming and color mixing in RGB LED strips or smart bulbs.

Automotive Aftermarket

Operating from 1.8V to 5.5V and with robust reset circuitry, it can be used in car alarm systems or window controllers.

Educational Kits

Its simplicity and extensive documentation make it ideal for teaching embedded systems and C programming.

Q: What is the maximum clock speed of the ATMEGA88A-MUR?
A: It operates at up to 20MHz, providing a good balance of speed and power consumption.
Q: What is the program memory size?
A: It has 8KB of in-system programmable flash memory (4K x 16 bits).
Q: What is the supply voltage range?
A: It supports 1.8V to 5.5V, making it versatile for both 3.3V and 5V systems.
Q: What package is this variant?
A: It comes in a 32-VFQFN exposed pad package, which offers excellent thermal performance.
Base Product Number : ATMEGA88A
1KB SRAM 20MHz 8-bit MCU 8KB Flash Arduino AVR core IoT LED Control PWM QFN-32
Q: What is the maximum clock speed of the ATMEGA88A-MUR?
A: It operates at up to 20MHz, providing a good balance of speed and power consumption.
Q: What is the program memory size?
A: It has 8KB of in-system programmable flash memory (4K x 16 bits).
Q: What is the supply voltage range?
A: It supports 1.8V to 5.5V, making it versatile for both 3.3V and 5V systems.
Q: What package is this variant?
A: It comes in a 32-VFQFN exposed pad package, which offers excellent thermal performance.