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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Tray | NULL
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 28-VQFN (4x4)
Package / Case 28-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATmega88A-MMH is an 8-bit AVR microcontroller with a rich peripheral set. It operates from 1.8V to 5.5V and runs at up to 20MHz. The 8KB flash and 1KB SRAM are suitable for moderate-complexity applications. Housed in a 28-VFQFN package, it includes Brown-out Detect/Reset, POR, PWM, and WDT for reliable operation. This MCU is widely used in education, consumer, and industrial designs.

  • Wide voltage range (1.8V-5.5V): Flexible for battery or regulated supplies.
  • High-speed AVR core (20MHz): Fast execution for real-time tasks.
  • Integrated brown-out detection: Prevents data corruption during voltage sags.
  • 28-VFQFN package: Compact with good thermal dissipation.

Arduino-Compatible Prototypes

The ATmega88A is a drop-in for many Arduino boards, enabling rapid development of hobbyist and educational projects.

Automotive Aftermarket Sensors

With 5V operation and -40°C to 85°C range, it can interface with vehicle sensors for tire pressure or temperature monitoring.

Home Automation Relays

Use PWM to control dimmers or relay drivers, with brown-out detection preventing erratic behavior during power dips.

Battery-Powered Data Loggers

The 1.8V minimum supply allows operation from two AA batteries, logging temperature or humidity to EEPROM.

Small Robotics Controllers

Drive hobby servos with PWM and read encoder inputs, using the 8KB flash for simple obstacle avoidance algorithms.

Industrial Safety Interlocks

Implement redundant logic with WDT and brown-out reset to ensure machinery stops safely on fault conditions.

Q: What is the core architecture?
A: It uses the 8-bit AVR core running at up to 20MHz.
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, compatible with both 3.3V and 5V systems.
Q: How much flash and RAM does it have?
A: It has 8KB of program flash (4K x 16) and 1KB of SRAM.
Q: Does it include brown-out detection?
A: Yes, it has Brown-out Detect/Reset, POR, PWM, and WDT.
Q: What package is available?
A: It comes in a 28-VFQFN exposed pad package.
Base Product Number : ATMEGA88A
1KB RAM 20MHz 8-bit MCU 8KB flash Arduino AVR hobbyist Microchip VFQFN-28
Q: What is the core architecture?
A: It uses the 8-bit AVR core running at up to 20MHz.
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, compatible with both 3.3V and 5V systems.
Q: How much flash and RAM does it have?
A: It has 8KB of program flash (4K x 16) and 1KB of SRAM.
Q: Does it include brown-out detection?
A: Yes, it has Brown-out Detect/Reset, POR, PWM, and WDT.
Q: What package is available?
A: It comes in a 28-VFQFN exposed pad package.