{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C27643-24LTXI","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C27643-24LTXI","canonicalUrl":"https://icboms.com/infineon/CY8C27643-24LTXI","factsUrl":"https://icboms.com/api/mcp/products/CY8C27643-24LTXI","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSOC®1 CY8C27xxx series, CY8C27643, M8C 8-Bit MCU, 24 MHz, 16 KB FLASH, 44 I/O, I²C/SPI/UART/USART, 4x14b ADC, 4x9b DAC, 48-QFN, -40°C to 85°C.","salesMarkdown":"## 16 KB Flash, 24 MHz M8C — the PSoC1 mixed-signal sweet spot The Infineon CY8C27643-24LTXI is an 8-bit PSoC1 microcontroller from the CY8C27xxx family, built around the proprietary M8C core running at 24 MHz. This is the mixed-signal tier of the PSoC1 lineup — the headline differentiator is the integrated data converter block: a 4-channel 14-bit ADC and a 4-channel 9-bit DAC, letting you handle analog sensor inputs and generate analog control outputs without an external converter IC. ## 44 I/O with I²C, SPI, UART — wired for sensor aggregation The 44 I/O count is generous for a 48-pin package — only four pins are consumed by power and ground, leaving the rest configurable as digital I/O or analog inputs. On-chip peripherals include POR, PWM, and WDT, so external supervisor or watchdog ICs can be omitted in many applications.","metaTitle":"Infineon CY8C27643-24LTXI PSoC1 M8C MCU, 24 MHz, 16 KB Flash","metaDescription":"Infineon CY8C27643-24LTXI PSoC1 8-bit MCU with M8C core at 24 MHz, 16 KB Flash, 44 I/O, 4x14b ADC, 4x9b DAC. Industrial temp -40°C to 85°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"series":"PSOC®1 CY8C27xxx","has_mpn":"CY8C27643","cpu_core":"M8C","frame_size":"8-Bit","fuse_speed":"24 MHz","connectivity":"I²C, SPI, UART/USART","package_type":"Tray","Number Of I/O":"44","mounting_type":"Surface Mount","product_status":"Active","Data Converters":"A/D 4x14b; D/A 4x9b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","peripheral_types":"POR, PWM, WDT","supply_voltage_v":"3.0","Program Memory Type":"FLASH","Operating Temperature High":"-40°C to 85°C (TA)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.97","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d402c25d314e801e736bd9567f91c494.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY8C27643-24LTXI/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between CY8C27643-24LTXI and CY8C27643-24PVXI?","answer":"The CY8C27643-24LTXI comes in a 48-pin QFN package (surface-mount, tray), while the CY8C27643-24PVXI is a 48-pin SSOP variant. The die, memory, and peripheral set are identical — the choice is purely footprint and assembly process. The QFN offers a smaller board footprint and better thermal performance through the exposed pad; the SSOP is easier to hand-solder and inspect."},{"question":"Is CY8C27643-24LTXI compatible with 5V?","answer":"No. The supply voltage is 3.0 V nominal. The I/O pins are not 5V-tolerant, so interfacing with 5V logic requires level translation or an external buffer. Check the absolute maximum ratings in the datasheet before connecting to 5V rails."},{"question":"What is the programming interface for CY8C27643-24LTXI?","answer":"The PSoC1 family uses a proprietary ISSP (In-System Serial Programming) protocol over two dedicated pins. Infineon's PSoC Programmer software and a MiniProg3 or compatible programmer handle the interface. The internal oscillator is used during programming, so no external clock is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C27643-24LTXI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C27643-24LTXI 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}}