{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C4125LQI-S423T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C4125LQI-S423T","canonicalUrl":"https://icboms.com/infineon/CY8C4125LQI-S423T","factsUrl":"https://icboms.com/api/mcp/products/CY8C4125LQI-S423T","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSoC® 4 CY8C4100S series CY8C4125LQI-S423T, 32-bit ARM Cortex-M0+ MCU, 24MHz, 32KB Flash, 4K x 8 RAM, 34 I/O, 40-QFN (6x6), -40 to 85°C.","salesMarkdown":"## What this PSoC 4 brings to a BOM line The Infineon CY8C4125LQI-S423T is a 32-bit ARM Cortex-M0+ MCU from the PSoC 4 series, clocked at 24 MHz with 32 KB of Flash and 4K x 8 of RAM. It integrates CapSense touch sensing, LCD segment drive, and a full set of serial interfaces — I2C, SPI, UART/USART, LINbus, IrDA, Microwire, SmartCard, and SSP — all in a 40-pin QFN with an exposed pad for thermal management. The 34 general-purpose I/O lines and the internal oscillator keep external component count low for cost-sensitive control panels, sensor hubs, and human-machine interfaces. ## CapSense and LCD drive — what they save on the BOM The integrated CapSense block eliminates a dedicated touch-controller IC for capacitive touch buttons, sliders, or proximity sensors. The LCD drive peripheral can directly segment-drive a small character or segment LCD display without an external driver chip. For a control panel with four touch buttons and a 16-segment display, this MCU replaces three separate ICs — the touch controller, the LCD driver, and the main MCU — consolidating the BOM and reducing board area. ## Lifecycle and sourcing posture The CY8C4125LQI-S423T carries an Active lifecycle status with ROHS3 compliance.","metaTitle":"Infineon CY8C4125LQI-S423T PSoC 4 MCU, 24MHz ARM Cortex-M0+","metaDescription":"Infineon CY8C4125LQI-S423T PSoC 4 MCU: 32-bit ARM Cortex-M0+ at 24MHz, 32KB Flash, 4K x 8 RAM, 34 I/O, CapSense, -40 to 85°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"PSOC® 4 CY8C4100S","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Speed":"24MHz","Series":"PSOC® 4 CY8C4100S","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":"34","Core Processor":"ARM® Cortex®-M0+","Package / Case":"40-UFQFN Exposed Pad","Data Converters":"A/D 16x10b Slope, 16x12b SAR; D/A 2xIDAC","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":"40-QFN (6x6)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.05","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.05000","currency":"USD"},{"qty":10,"price":"$2.74000","currency":"USD"},{"qty":25,"price":"$2.59080","currency":"USD"},{"qty":100,"price":"$2.24520","currency":"USD"},{"qty":250,"price":"$2.13008","currency":"USD"},{"qty":500,"price":"$1.91132","currency":"USD"},{"qty":1000,"price":"$1.61196","currency":"USD"},{"qty":2500,"price":"$1.53136","currency":"USD"},{"qty":5000,"price":"$1.47379","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1ace7f65017fc7aa7d4f2258d7a89bb2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY8C4125LQI-S423T RoHS compliant?","answer":"Yes, it is ROHS3 compliant."},{"question":"What are alternatives to CY8C4125LQI-S423T?","answer":"For applications needing Bluetooth, the CY8C4247LQI-BL473 adds BLE at 48 MHz with 36 I/O."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C4125LQI-S423T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C4125LQI-S423T 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}}