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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 12MHz
Connectivity I2C, SPI, UART/USART, USI
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 18
Program Memory Size 16KB (16K x 8)
Program Memory Type FLASH
EEPROM Size 256 x 8
RAM Size 1K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 12x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°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 Microchip ATTINY1634-MU is a mid-range 8-bit AVR microcontroller featuring 16KB flash and 1KB SRAM. It operates from 1.8V to 5.5V at speeds up to 12MHz, with integrated PWM, brown-out detection, and watchdog timer. The 20-WFQFN package offers a compact solution for industrial and consumer applications.

  • 16KB flash memory – supports larger firmware and data tables.
  • 1.8V low-voltage operation – ideal for energy-harvesting and battery systems.
  • 1KB SRAM – provides ample workspace for complex algorithms.
  • Integrated protection features – ensures reliable operation in noisy environments.

Smart Home Controllers

With 16KB flash and 1.8V operation, it can manage Zigbee or proprietary RF protocols in smart plugs and thermostats.

Industrial Process Monitors

Its 12MHz speed and 1KB SRAM handle real-time data acquisition from multiple analog sensors.

Wearable Fitness Devices

Low-voltage operation extends battery life in step counters and heart-rate monitors.

Agricultural Sensors

Robust temperature range and low power make it suitable for soil moisture and weather stations.

Medical Device Peripherals

Reliable operation at 1.8V supports portable glucose meters and infusion pump controllers.

HVAC Control Boards

PWM outputs drive fan motors and damper actuators with precise speed control.

Q: What is the program memory size of the ATTINY1634-MU?
A: It has 16KB of flash memory (16K x 8), suitable for medium-complexity applications.
Q: What is the operating voltage range?
A: It operates from 1.8V to 5.5V, supporting low-voltage and standard logic levels.
Q: What is the maximum clock speed?
A: It runs at up to 12MHz, balancing power consumption and processing capability.
Q: How much SRAM is included?
A: It provides 1KB of SRAM for data storage and stack operations.
Q: What package is used?
A: It comes in a 20-WFQFN exposed pad package, ideal for compact PCB layouts.
Base Product Number : ATTINY1634
1.8V 12MHz 16KB flash 1KB SRAM 20-WFQFN 8-bit MCU AVR industrial PWM WDT wearable
Q: What is the program memory size of the ATTINY1634-MU?
A: It has 16KB of flash memory (16K x 8), suitable for medium-complexity applications.
Q: What is the operating voltage range?
A: It operates from 1.8V to 5.5V, supporting low-voltage and standard logic levels.
Q: What is the maximum clock speed?
A: It runs at up to 12MHz, balancing power consumption and processing capability.
Q: How much SRAM is included?
A: It provides 1KB of SRAM for data storage and stack operations.
Q: What package is used?
A: It comes in a 20-WFQFN exposed pad package, ideal for compact PCB layouts.