{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C4124AXI-443","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C4124AXI-443","canonicalUrl":"https://icboms.com/infineon/CY8C4124AXI-443","factsUrl":"https://icboms.com/api/mcp/products/CY8C4124AXI-443","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSoC® 4 CY8C4100 series, CY8C4124AXI-443, ARM® Cortex®-M0 32-bit MCU, 24 MHz, 16 KB Flash, 36 I/O, I²C/SPI/UART/USART, 8x12b SAR ADC, 2xIDAC, -40 to 85°C, 44-TQFP.","salesMarkdown":"## What this PSoC 4 brings to a touch-sense or mixed-signal design The Infineon CY8C4124AXI-443 is a PSoC 4 microcontroller from the CY8C4100 series, built around an ARM Cortex-M0 core running at 24 MHz. It packs 16 KB of Flash and integrates a 12-bit SAR ADC with eight input channels plus two current-output IDACs, which covers most capacitive-sensing and analog-front-end needs without external converters. ## 24 MHz Cortex-M0 — enough for real-time sense loops At 24 MHz the Cortex-M0 delivers about 0.9 DMIPS/MHz, which is sufficient for scanning a CapSense button matrix, running a LIN or I²C sensor bus, and managing a small state machine without breaking a sweat. The 36 GPIOs in the 44-TQFP package leave room for a parallel LCD data bus and a few spare lines for expansion. ## Active lifecycle — no LTB worry for new designs The PSoC 4 family has broad second-source and cross-compatible siblings (e.g., CY8C4245LQI-483 with 48 MHz and 32 KB Flash) if a future design needs more headroom, but the CY8C4124AXI-443 itself is not at end-of-life. ## 44-TQFP — rework-friendly, but watch the exposed pad The 44-pin TQFP package has a 0.8 mm pitch and an exposed thermal pad underneath. For rework, the pad needs a via-stitched ground plane to pull heat away; without it the junction temperature climbs fast under continuous ADC conversions or when driving the IDACs near their full scale. The package outline is standard, so existing QFP footprints from other PSoC 4 parts (like the 48-pin variant) can be adapted with a pad-size check.","metaTitle":"CY8C4124AXI-443 PSoC 4 MCU, ARM Cortex-M0, 24 MHz","metaDescription":"Infineon CY8C4124AXI-443 PSoC 4 MCU: ARM Cortex-M0 at 24 MHz, 16 KB Flash, 36 I/O, CapSense, 12-bit SAR ADC, dual IDACs.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"series":"PSOC® 4 CY8C4100","has_mpn":"CY8C4124","cpu_core":"ARM® Cortex®-M0","frame_size":"32-Bit Single-Core","fuse_speed":"24 MHz","connectivity":"I²C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART","package_type":"Bulk","Number Of I/O":"36","mounting_type":"Surface Mount","product_status":"Active","Data Converters":"A/D 8x12b SAR; D/A 2xIDAC","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","peripheral_types":"Brown-out Detect/Reset, CapSense, LCD, LVD, 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":"$2.41","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2b4f8dee9139494317cb4172e8a50611.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY8C4124AXI-443/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between CY8C4124AXI-443 and CY8C4124AXI-433?","answer":"The primary difference is Flash memory size: the CY8C4124AXI-443 has 16 KB Flash, while the CY8C4124AXI-433 carries 32 KB Flash. Both share the same 44-TQFP package, 24 MHz Cortex-M0 core, and peripheral set including CapSense and the 12-bit ADC. The 433 variant is the better pick if your firmware needs room for a larger touch library or OTA update staging area."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C4124AXI-443","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C4124AXI-443 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}}