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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATtiny, Functional Safety (FuSa)
Packaging | NULL
Core Processor AVR
Core Size 8-Bit
Speed 16MHz
Connectivity USI
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 6
Program Memory Size 4KB (2K x 16)
Program Memory Type FLASH
EEPROM Size 256 x 8
RAM Size 256 x 8
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V
Data Converters A/D 4x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade Automotive
Qualification AEC AEC-Q100
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 ATTINY45-15MZ from Microchip is an 8-bit AVR MCU running at 16MHz. It operates from 2.7V to 5.5V. It includes 4KB flash and 256 x 8 RAM. The 20-WFQFN package is compact with exposed pad for thermal dissipation. Features include brown-out detect, POR, PWM, and WDT.

  • High-temperature rating (125°C): Suitable for automotive and industrial environments.
  • Small 20-WFQFN package: Saves PCB space in miniaturized designs.
  • 16MHz AVR core: Fast processing for real-time responses.
  • Wide voltage range (2.7-5.5V): Compatible with 3.3V and 5V systems.

Automotive LED Lighting

125°C rating and PWM support direct LED control in engine bay or headlamp modules.

High-Temperature Sensing

Wide temp range and 16MHz AVR core handle exhaust gas or motor winding temperature monitoring.

Compact Motor Drivers

20-WFQFN package and 4KB flash suit small drone or gimbal motor controllers.

Industrial Vibration Monitoring

WDT and brown-out detect ensure reliable operation in high-vibration environments.

Portable Power Tools

5.5V operation and PWM enable battery management and trigger control in drills.

Smart Switches

Small footprint and low pin count simplify in-wall light switches with touch sensing.

Q: What is the core architecture?
A: AVR 8-bit core at 16MHz.
Q: What is the voltage range?
A: 2.7V to 5.5V.
Q: How much program memory?
A: 4KB (2K x 16) flash.
Q: What is the package?
A: 20-WFQFN exposed pad.
Q: What temperature range?
A: -40°C to 125°C.
Base Product Number : ATTINY45-15MZ
16MHz 4KB flash 8-bit MCU automotive AVR high-temp industrial Microchip PWM WFQFN-20
Q: What is the core architecture?
A: AVR 8-bit core at 16MHz.
Q: What is the voltage range?
A: 2.7V to 5.5V.
Q: How much program memory?
A: 4KB (2K x 16) flash.
Q: What is the package?
A: 20-WFQFN exposed pad.
Q: What temperature range?
A: -40°C to 125°C.