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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATtiny
Packaging Cut Tape (CT) | Tape & Reel (TR)
Core Processor AVR
Core Size 8-Bit
Speed 12MHz
Connectivity -
Peripherals POR, PWM, WDT
Number of I/O 4
Program Memory Size 512B (256 x 16)
Program Memory Type FLASH
EEPROM Size -
RAM Size 32 x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters -
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package SOT-23-6
Package / Case SOT-23-6
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATTINY4-TSHR is an ultra-compact 8-bit AVR MCU in a SOT-23-6 package. It offers 512B Flash and 32B SRAM, running at 12MHz from 1.8V to 5.5V. With PWM and WDT, it is perfect for simple control tasks in space-limited designs.

  • Smallest Footprint: SOT-23-6 fits in designs where PCB area is critical.
  • Low Cost & Simple: Ideal for replacing discrete logic with minimal BOM.
  • Wide Voltage Range: Works directly from coin cells or regulated 3.3V/5V.
  • Integrated WDT: Enhances reliability in unattended applications.

Miniature Sensor Calibration

Use the tiny SOT-23-6 package to store calibration coefficients in 512B Flash for MEMS sensors.

Simple Logic Replacement

Replace 555 timers or logic gates with a programmable MCU for timing and control in toys.

Battery Voltage Monitor

Monitor a single-cell Li-ion battery and trigger an alert via an I/O pin when voltage drops.

LED Blinker for Wearables

Generate blinking patterns for LED indicators in fitness bands with minimal power draw.

Small Motor PWM Driver

Drive a small vibration motor with PWM for haptic feedback in handheld devices.

Power Sequencing

Control power-on sequencing for multiple rails in a compact power management board.

Q: What is the operating voltage?
A: It operates from 1.8V to 5.5V.
Q: What is the maximum speed?
A: The AVR core runs at up to 12MHz.
Q: How much Flash does it have?
A: It has 512B Flash and 32B SRAM.
Q: What package is available?
A: It comes in a SOT-23-6 package.
Q: Does it include PWM?
A: Yes, it has PWM and WDT.
Base Product Number : ATTINY4
12MHz 512B Flash 8-bit AVR ATTINY4 logic replacement PWM SOT-23-6 tiny WDT
Q: What is the operating voltage?
A: It operates from 1.8V to 5.5V.
Q: What is the maximum speed?
A: The AVR core runs at up to 12MHz.
Q: How much Flash does it have?
A: It has 512B Flash and 32B SRAM.
Q: What package is available?
A: It comes in a SOT-23-6 package.
Q: Does it include PWM?
A: Yes, it has PWM and WDT.