{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ATTINY3224-XU","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"ATTINY3224-XU","canonicalUrl":"https://icboms.com/microchip/ATTINY3224-XU","factsUrl":"https://icboms.com/api/mcp/products/ATTINY3224-XU","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology tinyAVR® 2 series, ATTINY3224-XU, 8-bit AVR MCU, 20 MHz, 32 KB flash, 3 KB SRAM, 256 B EEPROM, 9-channel 12-bit ADC, 1.8 V to 5.5 V supply, -40 to 85 °C, 14-TSSOP package, tube.","salesMarkdown":"## 20 MHz AVR core in a 14-pin TSSOP The ATTINY3224-XU is an 8-bit AVR microcontroller from Microchip's tinyAVR 2 family, clocked at 20 MHz. The 32 KB on-chip flash and 3 KB SRAM give it enough headroom for a Modbus RTU node, a sensor hub, or a simple motor controller — but the 14-pin TSSOP package limits the I/O to 12 pins, so every pin counts. The 1.8 V to 5.5 V supply range lets it run directly from a Li-ion cell or a 3.3 V / 5 V rail without an extra regulator, simplifying the power tree in battery-powered or mixed-voltage designs. ## Memory and peripheral budget The 9-channel 12-bit ADC reads thermistors, potentiometers, or current-shunt voltages; the 12-bit resolution gives about 1.2 mV per LSB at a 5 V reference, adequate for 0.1 °C temperature sensing with a 10 kΩ NTC. ## Active production, ROHS3, and tube packaging The -XU suffix indicates the ROHS3-compliant variant in a 14-lead TSSOP package, supplied in a tube — the standard for prototype and low-volume builds. ## Sourcing and BOM-fit note The 14-TSSOP footprint is a common 0.65 mm pitch, 4.40 mm body width — a two-layer board can fan out all pins, but the narrow pitch demands a controlled reflow profile to avoid solder bridging. The industrial temperature grade of -40 to 85 °C covers outdoor telecom, factory-floor sensor nodes, and automotive cabin-adjacent modules. The 85 °C ceiling excludes under-hood or engine-bay deployment without active cooling.","metaTitle":"ATTINY3224-XU Microchip 8-bit MCU 20 MHz 32 KB Flash","metaDescription":"Microchip ATTINY3224-XU tinyAVR 2 MCU: 20 MHz AVR core, 32 KB flash, 3 KB SRAM, 256 B EEPROM, 9-ch 12-bit ADC, 1.8-5.5 V, -40 to 85 °C, 14-TSSOP.","metaKeywords":null},"attributes":{"series":"tinyAVR® 2","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"20MHz","Series":"tinyAVR® 2","Package":"Tube","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":"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":"$1.03","priceTiers":[{"qty":1,"price":"$1.03000","currency":"USD"},{"qty":25,"price":"$0.93000","currency":"USD"},{"qty":100,"price":"$0.85000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6bd8071ade8092488824c9dcd7ae08e0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ATTINY3224-XU/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to ATTINY3224-XU in the tinyAVR 2 family?","answer":"Within the tinyAVR 2 series, the ATTINY1624-XU (16 KB flash) and ATTINY824-XU (8 KB flash) share the same 14-TSSOP package and pinout. The ATTINY3224-XU offers the largest flash (32 KB) in this footprint. All three are active and ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/ATTINY3224-XU","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/ATTINY3224-XU 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}}