{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C4014SXI-421","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C4014SXI-421","canonicalUrl":"https://icboms.com/infineon/CY8C4014SXI-421","factsUrl":"https://icboms.com/api/mcp/products/CY8C4014SXI-421","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSoC® 4 CY8C4000 series, CY8C4014, ARM® Cortex®-M0, 32-Bit Single-Core, 16 MHz, 13 I/O, I²C, FLASH, 1.71 V supply, -40°C to 85°C, Surface Mount.","salesMarkdown":"The CY8C4014SXI-421: It integrates a 1x7b and 1x8b DAC, an internal oscillator, and 13 general-purpose I/O lines. ## 16 MHz clock and 13 I/O — sizing the fit The 16 MHz ceiling is the main speed constraint versus the 48 MHz PSoC 4 siblings (e.g., CY8C4245LQI-483). For a sensor readout or a simple control loop that polls at a few kilohertz, 16 MHz is ample. But if the firmware runs a bit-banged protocol or a tight PWM update rate, the lower clock means fewer cycles per instruction — budget accordingly. The 13 I/O count, paired with I²C connectivity, suits a compact interface controller or a front-end node that talks to a host over a two-wire bus. ## Supply voltage and battery operation The 1.71 V minimum supply voltage is the headline fit criterion for battery-powered designs. A single alkaline cell will not sustain operation as it sags — the part needs a boost converter or a two-cell stack. For a production BOM, this part qualifies for new designs without a forced-migration timeline. The laser-etched date-code and top-mark should trace cleanly through a distributor chain — a broker lot with mismatched date-codes or a sanded top-side is a red flag worth a decap check. Surface-mount package, shipped in tube. The low I/O count keeps the PCB area small — useful for space-constrained designs like a sensor module or a dongle. Standard reflow profile applies; MSL level should be confirmed from the package marking.","metaTitle":"Infineon CY8C4014SXI-421 PSoC 4 ARM Cortex-M0 MCU, 16 MHz","metaDescription":"CY8C4014SXI-421 from Infineon: PSoC 4 series, ARM Cortex-M0, 16 MHz, 1.71 V supply, 13 I/O, internal oscillator, -40 to 85 °C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"series":"PSOC® 4 CY8C4000","has_mpn":"CY8C4014","cpu_core":"ARM® Cortex®-M0","frame_size":"32-Bit Single-Core","fuse_speed":"16 MHz","connectivity":"I²C","package_type":"Tube","Number Of I/O":"13","mounting_type":"Surface Mount","product_status":"Active","Data Converters":"D/A 1x7b, 1x8b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","peripheral_types":"Brown-out Detect/Reset, POR, PWM, WDT","supply_voltage_v":"1.71","Program Memory Type":"FLASH","Operating Temperature High":"-40°C to 85°C (TA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.11","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7fc595c79bf74a5401fdaacbab41e60e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY8C4014SXI-421/alternatives.json"},"ai":{"faq":[{"question":"Does CY8C4014SXI-421 have an internal oscillator?","answer":"Yes, the oscillator type is listed as internal, so no external crystal is required for the core clock."},{"question":"Is CY8C4014SXI-421 suitable for battery-powered applications?","answer":"Yes, with a 1.71 V minimum supply it can run from a two-cell alkaline stack or a single Li-ion cell with a regulator. A single 1.5 V alkaline cell will not sustain operation without a boost converter."},{"question":"When sourcing CY8C4014SXI-421, what is the closest functional second-source?","answer":"The CY8C4245LQI-483 is a PSoC 4 sibling with the same ARM Cortex-M0 core but runs at 48 MHz and offers 34 I/O plus a 12-bit ADC. It is not a pin-compatible drop-in — the package and peripheral set differ — but it serves as a higher-performance alternative within the same family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C4014SXI-421","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C4014SXI-421 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}