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ATTINY204-SSNR

MCHPATTINY204-SSNR

Microchip Technology
AVR tinyAVR™ 0, Functional Safety (FuSa) Microcontroller IC 8-Bit 20MHz 2KB (2K x 8) FLASH 14-SOIC
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Overview

The ATTINY204-SSNR is an 8-bit AVR microcontroller from the tinyAVR 0-series, specifically designed for functional safety (FuSa) applications. It features 2KB of Flash, Core Independent Peripherals (CIPs), and a high-speed internal oscillator in a compact 14-pin SOIC package. This MCU is optimized for deterministic control and low-power operation in space-constrained industrial or automotive environments.

Why Choose This Part

The ATTINY204 excels due to its Core Independent Peripherals, which allow for complex tasks to be handled without waking the CPU, significantly reducing power consumption. Its support for the Unified Program and Debug Interface (UPDI) simplifies pin multiplexing, while the integrated CRC and hardware multiplier provide computational efficiency rare in 2KB devices.

Applications

Safety-Critical Sensors
Utilizes built-in functional safety features to monitor and report system health in industrial safety loops.
Battery-Powered Handhelds
Leverages 0.1uA shutdown current and SleepWalking technology to extend battery life in intermittent-use devices.
Housekeeping and Glue Logic
Replaces discrete logic and small FPGAs for system monitoring, power sequencing, and basic interface bridging.
Small Motor Control
Uses the 20MHz core speed and integrated PWM peripherals for simple fan or pump speed regulation.

Key Specifications

Speed 20MHz
RAM Size 128 x 8
Core Size 8-Bit
EEPROM Size 64 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 10x10b
Oscillator Type Internal
Program Memory Size 2KB (2K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 105degC (TA)
Supplier Device Package 14-SOIC
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Developers can begin by using the Atmel-ICE or PICkit 4 programmers via the UPDI interface. Development is fully supported in Microchip Studio and MPLAB X IDE, with the XC8 compiler providing optimized code for the 2KB Flash limit. For rapid prototyping, the ATtiny404 Curiosity Nano serves as a compatible evaluation platform for the 0-series family.

Also Consider

ATTINY404-SSNR MCHPMicrochip Technology - Provides 4KB of Flash for applications that outgrow the 2KB limit of the ATTINY204 while maintaining pin compatibility.
STM8L051F3P6 STMicroelectronics - A low-power 8-bit alternative with a different architecture if higher GPIO counts or larger memory are required.