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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATtiny
Packaging Tray | NULL
Core Processor AVR
Core Size 8-Bit
Speed 20MHz
Connectivity I2C, LINbus, SPI, UART/USART, USI
Peripherals Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number of I/O 16
Program Memory Size 16KB (8K x 16)
Program Memory Type FLASH
EEPROM Size 512 x 8
RAM Size 512 x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 11x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 20-WQFN (4x4)
Package / Case 20-WFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATTINY167-MMU is a compact 8-bit AVR microcontroller with 16KB flash and 512 bytes of RAM. It operates from 1.8V to 5.5V and runs at up to 20MHz, offering flexible power options. Integrated peripherals include PWM, temperature sensor, and brown-out detection. The 20-WFQFN package is ideal for space-constrained designs requiring robust performance.

  • Wide Voltage Range (1.8V-5.5V): Simplifies design across mixed-voltage systems.
  • High Speed at Low Voltage: 20MHz at 1.8V enables fast processing in battery devices.
  • Integrated Temperature Sensor: Eliminates external components for thermal monitoring.
  • Compact QFN Package: Saves board space for miniaturized products.

Battery-Powered Remote Controls

With 1.8V operation and WDT, it maintains low standby current for years of use in consumer remotes.

LED Lighting Controllers

PWM channels and 20MHz speed enable smooth dimming and color mixing in smart bulbs.

Automotive Sensor Interfaces

Operating from -40°C to 85°C, it reads temperature and pressure sensors in engine bay modules.

Portable Health Monitors

The small QFN package and low power make it suitable for wearable heart-rate or activity trackers.

Small Appliance Control

Replaces discrete logic in coffee makers or air purifiers with reliable timer and PWM functions.

Security Keypads

512 bytes of RAM and 16KB flash handle debouncing and encryption for access control panels.

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 memory is available?
A: It has 16KB of flash (8K x 16 words).
Q: What is the maximum clock speed?
A: The AVR core runs at up to 20MHz.
Q: Does it have a temperature sensor?
A: Yes, it includes an internal temperature sensor.
Q: What package is this?
A: It is a 20-WFQFN exposed pad package.
Base Product Number : ATTINY167
16KB Flash 20MHz 512B RAM 8-bit MCU Automotive AVR Consumer PWM QFN-20 Temperature Sensor
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 memory is available?
A: It has 16KB of flash (8K x 16 words).
Q: What is the maximum clock speed?
A: The AVR core runs at up to 20MHz.
Q: Does it have a temperature sensor?
A: Yes, it includes an internal temperature sensor.
Q: What package is this?
A: It is a 20-WFQFN exposed pad package.