{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C4125LQI-S433","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C4125LQI-S433","canonicalUrl":"https://icboms.com/infineon/CY8C4125LQI-S433","factsUrl":"https://icboms.com/api/mcp/products/CY8C4125LQI-S433","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSOC® 4 CY8C4100S series, CY8C4125LQI-S433, ARM® Cortex®-M0+ 32-Bit MCU, 24MHz, 32KB FLASH, 4K x 8 RAM, 34 I/O, 40-UFQFN Exposed Pad, -40°C to 85°C.","salesMarkdown":"## What the CY8C4125LQI-S433 brings to a control board The Infineon CY8C4125LQI-S433 is a PSoC 4 MCU built around an ARM Cortex-M0+ core clocked at 24 MHz, with 32 KB of Flash and 4K x 8 of SRAM. It integrates CapSense touch-sensing, a pair of IDACs, and a 16-channel 10-bit slope / 12-bit SAR ADC — enough analog front-end to handle a capacitive touch panel, a few sensor inputs, and a closed-loop control output without an external converter. The 34 GPIOs in a 40-QFN (6x6 mm) package leave room for a modest keypad, a small character LCD, and a couple of serial buses. ## 24 MHz core — what it means for throughput The Cortex-M0+ core runs at 24 MHz. ## CapSense and analog — the distinguishing features The CY8C4125LQI-S433 includes CapSense, LCD, PWM, and WDT peripherals. ## Supply range and temperature grade Supply range is 1.71 V to 5.5 V; operating temperature is -40°C to 85°C. ## Active lifecycle — no LTB pressure The CY8C4125LQI-S433 carries an Active lifecycle status and ROHS3 compliance. For a BOM line that needs a medium-density PSoC 4 with CapSense and analog I/O, this part is a current-production choice with no imminent obsolescence risk.","metaTitle":"Infineon CY8C4125LQI-S433 PSoC 4 MCU, ARM Cortex-M0+, 24 MHz","metaDescription":"Infineon CY8C4125LQI-S433 PSoC 4 MCU: 32-bit ARM Cortex-M0+ at 24 MHz, 32 KB Flash, 4K x 8 RAM, 34 I/O, CapSense, dual IDAC, industrial temp -40 to 85°C.","metaKeywords":null},"attributes":{"series":"PSOC® 4 CY8C4100S","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"24MHz","Series":"PSOC® 4 CY8C4100S","Package":"Tray","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":"$4.01","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.01000","currency":"USD"},{"qty":10,"price":"$3.60600","currency":"USD"},{"qty":25,"price":"$3.40880","currency":"USD"},{"qty":80,"price":"$2.95425","currency":"USD"},{"qty":230,"price":"$2.80274","currency":"USD"},{"qty":490,"price":"$2.51490","currency":"USD"},{"qty":980,"price":"$2.12100","currency":"USD"},{"qty":2450,"price":"$2.01495","currency":"USD"},{"qty":4900,"price":"$1.93920","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1ace7f65017fc7aa7d4f2258d7a89bb2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the alternatives to CY8C4125LQI-S433?","answer":"The closest functional peer is the CY8C4245LQI-483, which doubles the core speed to 48 MHz and uses the same 34-I/O, 40-QFN footprint. The CY8C4245LQI-483 is a step up in throughput for designs that need more CPU headroom, but it shares the same CapSense and analog peripheral set."},{"question":"Is CY8C4125LQI-S433 RoHS compliant?","answer":"Yes, the CY8C4125LQI-S433 is ROHS3 compliant."},{"question":"What is the difference between CY8C4125LQI-S433 and CY8C4124LQI-S433?","answer":"The CY8C4125LQI-S433 has 32 KB Flash, while the CY8C4124LQI-S433 has 16 KB Flash. Both share the same Cortex-M0+ core at 24 MHz, 40-QFN package, and CapSense/analog peripheral set. The 32 KB variant is the one to pick if firmware size exceeds 16 KB."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C4125LQI-S433","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C4125LQI-S433 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}}