{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATTINY3224-XUR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"ATTINY3224-XUR","canonicalUrl":"https://icboms.com/microchip/ATTINY3224-XUR","factsUrl":"https://icboms.com/api/mcp/products/ATTINY3224-XUR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip tinyAVR® 2 ATTINY3224-XUR, 8-bit AVR MCU, 20 MHz, 32 KB Flash, 3 KB SRAM, 256 B EEPROM, 9x12-bit ADC, 1.8 V to 5.5 V, -40°C to 85°C, 14-TSSOP.","salesMarkdown":"## What this 8-bit MCU brings to a small-footprint design The Microchip ATTINY3224-XUR is an 8-bit AVR microcontroller from the tinyAVR® 2 family, built around the AVR core with a 20 MHz clock. ## Supply voltage and I/O — fitting into a 12-pin budget Plan the pin multiplexing early in the schematic. ## Memory sizing for a firmware-update strategy The Flash is enough for a bootloader plus application code if you keep the application under about 28 KB; the remaining space can hold a small OTA staging buffer if you use external Flash. The 256-byte EEPROM is useful for calibration constants or fault logs that survive a firmware update. If your design needs over-the-air updates with a full-image backup, consider stepping up to a 64 KB Flash variant in the same tinyAVR 2 family.","metaTitle":"ATTINY3224-XUR 8-bit AVR MCU, 20 MHz, 32 KB Flash, 14-TSSOP","metaDescription":"Microchip ATTINY3224-XUR 8-bit AVR MCU with 20 MHz speed, 32 KB Flash, 3 KB SRAM, 256 B EEPROM, 9x12-bit ADC, 1.8-5.5 V supply, -40 to 85°C, 14-TSSOP.","metaKeywords":null},"attributes":{"series":"tinyAVR® 2","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Signal Isolation"],"specifications":{"Speed":"20MHz","Series":"tinyAVR® 2","Package":"Tape & Reel (TR); Cut Tape (CT)","RAM Size":"3K x 8","Core Size":"8-Bit","EEPROM Size":"256 x 8","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"12","Core Processor":"AVR","Package / Case":"14-TSSOP (0.173\\\", 4.40mm Width)","Data Converters":"A/D 9x12b","Oscillator Type":"External, Internal","lifecycle_stage":"eol_hot","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"14-TSSOP","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.05","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.05000","currency":"USD"},{"qty":25,"price":"$0.97000","currency":"USD"},{"qty":100,"price":"$0.88000","currency":"USD"},{"qty":2500,"price":"$0.88000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b5f4c502e2c64551507614747e3869b1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How many I/O pins does ATTINY3224-XUR have?","answer":"It provides 12 general-purpose I/O pins in the 14-pin package. Nine of these can be used as analog inputs through the 12-bit ADC."},{"question":"When sourcing ATTINY3224-XUR, what's the closest functional second-source — AVR32DD28T-I/SS?","answer":"The AVR32DD28T-I/SS is a Microchip AVR DD-series 8-bit MCU with a similar core (AVR, 8-bit) and 32 KB Flash, but it runs at 24 MHz, offers 22 I/O, and includes LINbus and RS-485 interfaces. It is not pin-compatible (28-pin SSOP vs 14-pin TSSOP) and is a different peripheral set, so it is a functional alternative only if the board can accommodate the larger footprint and extra I/O."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/ATTINY3224-XUR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/ATTINY3224-XUR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}