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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATtiny
Packaging | Tape & Reel (TR)
Core Processor AVR
Core Size 8-Bit
Speed 12MHz
Connectivity UART/USART
Peripherals POR, PWM, WDT
Number of I/O 6
Program Memory Size 1KB (1K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 32 x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 5x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 125°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Supplier Device Package 8-SOIC
Package / Case 8-SOIC (0.154", 3.90mm Width)
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATTINY102-MFR is an 8-bit AVR microcontroller engineered for extreme environments. It operates from 1.8V to 5.5V and runs at 12MHz, with 1KB of Flash and 32 bytes of SRAM. This variant is rated for -40°C to 125°C, making it one of the few small-package MCUs suitable for high-temperature automotive and industrial applications. Integrated POR, PWM, and WDT peripherals ensure dependable operation in harsh conditions.

  • Extended Temperature Range: Rated for -40°C to 125°C, enabling use in automotive and high-heat industrial environments.
  • Low-Voltage Operation: Works down to 1.8V, allowing direct battery power and reducing thermal stress.
  • Integrated Watchdog Timer: Enhances system reliability by automatically resetting on software faults.
  • Small 8-SOIC Package: Saves board space while providing robust thermal performance.

High-Temperature Industrial Sensors

The 125°C junction temperature rating allows this MCU to operate reliably in engine compartments, industrial ovens, or near hot machinery where standard MCUs fail.

Automotive Actuator Control

With AEC-Q100 compliance (implied by temp range) and 12MHz PWM, it can control solenoids or small valves in transmission or braking systems.

LED Driver for Outdoor Lighting

The wide voltage range and PWM capability make it suitable for streetlight or signage LED drivers that experience extreme ambient temperatures.

Power Tool Safety Interlocks

Its robust temperature range and WDT ensure safe operation in cordless drills or saws, monitoring trigger inputs and battery voltage.

HVAC Zone Controllers

In building automation, this MCU can manage damper actuators or temperature sensors in unconditioned spaces with high heat exposure.

Downhole Oil & Gas Sensors

The 125°C rating enables basic data logging and communication in shallow well monitoring equipment.

Q: What is the difference between ATTINY102-MFR and -MNR?
A: The -MFR variant has an extended operating temperature range of -40°C to 125°C, while -MNR is rated to 105°C.
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, supporting a wide range of power sources.
Q: What is the maximum clock frequency?
A: The core runs at up to 12MHz, providing adequate performance for control and sensing tasks.
Q: How much memory is available?
A: It includes 1KB of Flash program memory and 32 bytes of SRAM for data storage.
Q: What package is this MCU available in?
A: It comes in an 8-SOIC (0.154", 3.90mm Width) package, suitable for automated assembly.
Base Product Number : ATTINY102
125°C 12MHz 1KB Flash 8-bit MCU 8-SOIC automotive AVR high temperature industrial microcontroller PWM WDT
Q: What is the difference between ATTINY102-MFR and -MNR?
A: The -MFR variant has an extended operating temperature range of -40°C to 125°C, while -MNR is rated to 105°C.
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V, supporting a wide range of power sources.
Q: What is the maximum clock frequency?
A: The core runs at up to 12MHz, providing adequate performance for control and sensing tasks.
Q: How much memory is available?
A: It includes 1KB of Flash program memory and 32 bytes of SRAM for data storage.
Q: What package is this MCU available in?
A: It comes in an 8-SOIC (0.154", 3.90mm Width) package, suitable for automated assembly.