EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts   Microcontrollers    ATTINY424-SSU
ATTINY424-SSU

MCHPATTINY424-SSU

Microchip Technology
AVR tinyAVR® 2 Microcontroller IC 8-Bit 20MHz 4KB (4K x 8) FLASH 14-SOIC
Active6,780 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ATTINY424-SSU is a member of the tinyAVR 2 family, featuring an 8-bit AVR processor with a hardware multiplier running at up to 20MHz. This microcontroller integrates 4KB of Flash and 512B of RAM in a compact 14-pin SOIC package, making it suitable for space-constrained control applications. It includes advanced analog capabilities like a 12-bit differential ADC with a Programmable Gain Amplifier (PGA).

Why Choose This Part

The integration of a hardware multiplier and a 12-bit differential ADC provides performance typically found in larger MCUs within a 14-pin footprint. It also features an Event System that allows peripherals to communicate without CPU intervention, reducing latency and power consumption.

Applications

Sensor Signal Conditioning
Utilizing the 12-bit differential ADC and PGA to interface directly with low-voltage bridge sensors or thermocouples without external op-amps.
Housekeeping and System Monitoring
Performing power sequencing, voltage monitoring via the ADC, and basic logic replacement in larger embedded systems.
Handheld Portable Devices
Leveraging low-power modes and a wide operating voltage for battery-powered consumer electronics and tools.
Simple Human-Machine Interfaces
Managing buttons, LEDs, and basic display drivers using its 12 GPIO pins and internal PWM capabilities.

Key Specifications

Speed 20MHz
RAM Size 512 x 8
Core Size 8-Bit
EEPROM Size 128 x 8
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Connectivity I2C, SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 12
Core Processor AVR
Package / Case 14-SOIC (0.154", 3.90mm Width)
Data Converters A/D 9x12b
Oscillator Type Internal
Program Memory Size 4KB (4K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 14-SOIC
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Development is supported by Microchip Studio and MPLAB X IDEs using the XC8 compiler. Hardware programming and debugging are performed via the single-pin Unified Program and Debug Interface (UPDI), compatible with the MPLAB PICkit 4 or the Atmel-ICE.

Categories

Microcontrollers
The 2026 Embedded Online Conference