{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C4045LQI-S411T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C4045LQI-S411T","canonicalUrl":"https://icboms.com/infineon/CY8C4045LQI-S411T","factsUrl":"https://icboms.com/api/mcp/products/CY8C4045LQI-S411T","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSoC® 4 CY8C4000S series, CY8C4045LQI-S411T, 32-Bit ARM Cortex-M0+ MCU, 48 MHz, 32 KB Flash, 4K x 8 RAM, 19 I/O, 1.71V ~ 5.5V, -40°C ~ 85°C, 24-QFN (4x4 mm).","salesMarkdown":"## What this PSoC 4 brings to a touch- or display-oriented BOM The Infineon CY8C4045LQI-S411T is a 32-bit ARM Cortex-M0+ MCU clocked at 48 MHz. It carries 32 KB of Flash and 4 KB of RAM. The supply range runs from 1.71 V up to 5.5 V, so a single Li-ion cell or two alkaline cells in series can power it without a regulator. The 24-QFN package with exposed pad (4x4 mm body) fits into handheld enclosures and sensor modules where board area is tight. Operating temperature is -40°C to 85°C, covering industrial control panels, outdoor telecom gear, and consumer appliances — not under-hood or extended-temp environments. ## 48 MHz Cortex-M0+ — what it means for the sensor loop The Cortex-M0+ core runs at 48 MHz. The 4 KB RAM handles a touch-report table and an LCD frame buffer. ## Package and rework — the 24-QFN with exposed pad The 24-QFN package (4x4 mm) has an exposed pad that must be soldered to a thermal land on the PCB. ## Lifecycle and sourcing posture This part is listed as Active with ROHS3 compliance. No end-of-life notice or last-time-buy window is in effect. It is suitable for new designs and production ramps.","metaTitle":"CY8C4045LQI-S411T PSoC 4 MCU, 48 MHz Cortex-M0+, 32 KB Flash","metaDescription":"Infineon CY8C4045LQI-S411T 32-bit ARM Cortex-M0+ MCU at 48 MHz with 32 KB Flash, 4 KB RAM, CapSense, LCD, 24-QFN. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"PSOC® 4 CY8C4000S","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"48MHz","Series":"PSOC® 4 CY8C4000S","Package":"Tape & Reel (TR); Cut Tape (CT)","RAM Size":"4K x 8","Core Size":"32-Bit Single-Core","Peripherals":"Brown-out Detect/Reset, CapSense, LCD, LVD, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"19","Core Processor":"ARM® Cortex®-M0+","Package / Case":"24-UFQFN Exposed Pad","Data Converters":"A/D 1x10b","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":"24-QFN (4x4)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.16","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.16000","currency":"USD"},{"qty":10,"price":"$2.83600","currency":"USD"},{"qty":25,"price":"$2.68160","currency":"USD"},{"qty":100,"price":"$2.32400","currency":"USD"},{"qty":250,"price":"$2.20484","currency":"USD"},{"qty":500,"price":"$1.97838","currency":"USD"},{"qty":1000,"price":"$1.66852","currency":"USD"},{"qty":2500,"price":"$1.58510","currency":"USD"},{"qty":5000,"price":"$1.52550","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a3c4c8787d664729a6e0a4fe3d8b4319.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY8C4045LQI-S411T RoHS compliant?","answer":"Yes, it is ROHS3 compliant."},{"question":"What is the difference between CY8C4045LQI-S411 and CY8C4045LQI-S411T?","answer":"The -S411T variant is the Tape & Reel (TR) and Cut Tape (CT) packaging option; the -S411 suffix typically denotes tray packaging. The silicon is identical."},{"question":"When sourcing CY8C4045LQI-S411T, what's the closest functional second-source?","answer":"The CY8C4245LQI-483 is a PSoC 4 peer with the same 48 MHz Cortex-M0 core, 32 KB Flash, and CapSense peripheral set, but it offers 34 I/O and 8x12-bit SAR ADC plus dual IDACs in a larger package. It is not pin-compatible — the 24-QFN footprint is different — but the firmware and peripheral API are largely portable."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C4045LQI-S411T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C4045LQI-S411T 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}}