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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATtiny
Packaging Tray |
Core Processor AVR
Core Size 8-Bit
Speed 20MHz
Connectivity USI
Peripherals Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number of I/O 12
Program Memory Size 2KB (1K x 16)
Program Memory Type FLASH
EEPROM Size 128 x 8
RAM Size 128 x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 8x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 20-QFN-EP (4x4)
Package / Case 20-WFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATTINY24A-MF is a high-temperature 8-bit AVR microcontroller from Microchip, rated for -40°C to 125°C. It operates from 1.8V to 5.5V at 20MHz, with 2KB flash and 128 bytes RAM. The 20-WFQFN package includes an exposed pad for thermal management, plus integrated PWM, temp sensor, WDT, and Brown-out Reset.

  • Extended temperature range (125°C) for harsh automotive/industrial environments.
  • Exposed pad package improves heat dissipation for reliable operation.
  • Internal temperature sensor eliminates external thermistor.
  • Low voltage (1.8V) supports energy-efficient designs.

Engine Control Modules

The 125°C rating and internal temp sensor allow direct mounting near engine blocks for temperature monitoring.

Industrial Motor Drives

WFQFN package with exposed pad improves thermal dissipation in high-current PWM motor drivers.

Automotive Lighting

Wide temp range and BOR ensure reliable operation in headlamp or taillight modules exposed to extreme heat.

Downhole Drilling Sensors

High-temperature tolerance makes it suitable for oil/gas exploration tools that experience 125°C environments.

HVAC Actuators

Use the PWM and temp sensor for closed-loop damper control in commercial HVAC systems.

Battery Management Systems

1.8V operation and low power consumption suit cell monitoring circuits in automotive BMS.

Q: What is the temperature range?
A: -40°C to 125°C (TA).
Q: What package is this?
A: 20-WFQFN exposed pad.
Q: What is the supply voltage?
A: 1.8V to 5.5V.
Q: Does it have a temp sensor?
A: Yes, internal temperature sensor is included.
Q: What is the flash size?
A: 2KB (1K x 16).
Base Product Number : ATTINY24A
20MHz 2KB Flash 8-bit Automotive AVR High Temp Industrial MCU Microchip WFQFN-20
Q: What is the temperature range?
A: -40°C to 125°C (TA).
Q: What package is this?
A: 20-WFQFN exposed pad.
Q: What is the supply voltage?
A: 1.8V to 5.5V.
Q: Does it have a temp sensor?
A: Yes, internal temperature sensor is included.
Q: What is the flash size?
A: 2KB (1K x 16).