{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATTINY404-SSFR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"ATTINY404-SSFR","canonicalUrl":"https://icboms.com/microchip/ATTINY404-SSFR","factsUrl":"https://icboms.com/api/mcp/products/ATTINY404-SSFR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip tinyAVR™ 0, Functional Safety (FuSa) series, ATTINY404-SSFR, 8-bit AVR MCU, 4KB Flash, 256 x 8 RAM, 128 x 8 EEPROM, 16MHz, 14-SOIC, -40°C to 125°C, 2.7V to 5.5V.","salesMarkdown":"## 8-bit AVR MCU for space-constrained, harsh-environment control The Microchip ATTINY404-SSFR is an 8-bit AVR microcontroller from the tinyAVR™ 0 series, designed for cost-sensitive control applications where small footprint and wide temperature range matter. It integrates 4 KB of Flash program memory, 256 bytes of RAM, and 128 bytes of EEPROM, running at up to 16 MHz from an internal oscillator. ## Memory and peripheral sizing for the BOM With 4 KB Flash and 256 bytes of RAM, this part targets simple control loops, sensor readouts, and communication bridging — not data logging or complex protocol stacks. The 128 bytes of EEPROM provide non-volatile storage for calibration constants or configuration parameters without needing external memory. The 12 I/O pins, shared with the ADC and serial interfaces, require careful pin allocation in the schematic to avoid conflicts. The 10-bit ADC with 10 channels covers multi-sensor analog front ends, though the 16 MHz core speed limits throughput for high-frequency sampling. It is ROHS3 compliant.","metaTitle":"Microchip ATTINY404-SSFR 8-bit AVR MCU, 4KB Flash, 16MHz","metaDescription":"Microchip ATTINY404-SSFR 8-bit AVR MCU from tinyAVR™ 0 series. 4KB Flash, 256B RAM, 128B EEPROM, 16MHz, -40°C to 125°C, 14-SOIC.","metaKeywords":null},"attributes":{"series":"tinyAVR™ 0, Functional Safety (FuSa)","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"16MHz","Series":"tinyAVR™ 0, Functional Safety (FuSa)","Package":"Tape & Reel (TR); Cut Tape (CT)","RAM Size":"256 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 10x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"4KB (4K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"14-SOIC","Voltage - Supply (Vcc/Vdd)":"2.7V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.66","priceTiers":[{"qty":1,"price":"$0.66000","currency":"USD"},{"qty":25,"price":"$0.61000","currency":"USD"},{"qty":100,"price":"$0.55000","currency":"USD"},{"qty":3000,"price":"$0.55000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1f25b4438458d8de55ab8147127174f3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ATTINY404-SSFR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between ATTINY404-SSFR and ATTINY404-SSNR?","answer":"The silicon and functional specifications are identical; the difference is in the shipping medium and reel quantity. Confirm the exact ordering code for your assembly line's feeder requirements."},{"question":"What is the closest functional alternative to ATTINY404-SSFR?","answer":"The ATTINY3224-XUR is a newer tinyAVR® 2 series part with 20 MHz speed, 9-channel 12-bit ADC, and a wider 1.8 V supply minimum, but it shares the same 8-bit AVR core and 12 I/O count. It is not pin-compatible due to a different package (14-pin TSSOP vs 14-SOIC), so a board layout change is required. For a drop-in replacement, stick with the ATTINY404-SSFR or its sibling ATTINY404-SSNR."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/ATTINY404-SSFR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/ATTINY404-SSFR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}