{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C29866-24AXI","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C29866-24AXI","canonicalUrl":"https://icboms.com/infineon/CY8C29866-24AXI","factsUrl":"https://icboms.com/api/mcp/products/CY8C29866-24AXI","rawCanonicalId":null},"summary":{"shortDescription":"Cypress PSoC®1 CY8C29xxx, CY8C29866-24AXI, 8-Bit M8C MCU, 24MHz, 32KB Flash, 2K x 8 RAM, I²C/SPI/UART, 64 I/O, 100-LQFP, -40°C to 85°C.","salesMarkdown":"## PSoC1 CY8C29866-24AXI — 8-bit MCU with configurable analog and digital blocks The Cypress CY8C29866-24AXI is an 8-bit PSoC1 microcontroller from the CY8C29xxx family, built around the M8C core running at 24 MHz. It carries 32 KB of Flash program memory and 2K x 8 of SRAM, with 64 general-purpose I/O lines brought out to a 100-pin LQFP package (100-TQFP, 14x14 mm). The part integrates a 12-channel 14-bit ADC and a 4-channel 9-bit DAC, plus a set of programmable digital and analog blocks that let you configure peripherals like counters, timers, PWMs, and filters without external glue logic. Serial connectivity covers I²C, SPI, and UART/USART, and the internal oscillator eliminates the need for an external crystal in many applications. The operating temperature range spans -40°C to 85°C, making it suitable for industrial control, sensor interfaces, and human-machine interface panels that see factory-floor or outdoor telecom environments. ## What the ratings mean for your BOM The 24 MHz core speed is the ceiling for instruction throughput — enough for control loops in the tens of kilohertz range and moderate data logging, but not for high-rate DSP. The 32 KB Flash is the firmware budget; if your application requires over-the-air updates or a large protocol stack, you will need to compress or move to a higher-density sibling. The 2K x 8 SRAM is tight — watch your stack and global variable usage, especially if you are using the USB or multiple serial buffers. The 14-bit ADC gives you 14-bit resolution across 12 multiplexed channels, which is adequate for most sensor-conditioning tasks; the 9-bit DAC is useful for generating analog setpoints or driving simple analog outputs. The 64 I/O pins in a 100-LQFP mean you have plenty of headroom for parallel displays, keypad matrices, and external memory interfaces, but the package footprint is larger than a 64-pin QFP — plan your board area accordingly.","metaTitle":"Cypress CY8C29866-24AXI PSoC1 MCU, 8-Bit 24MHz, 32KB Flash","metaDescription":"Cypress CY8C29866-24AXI 8-bit PSoC1 MCU with M8C core at 24MHz, 32KB Flash, 2Kx8 RAM, 64 I/O, industrial temp -40°C to 85°C, 100-TQFP.","metaKeywords":null},"attributes":{"series":"PSOC®1 CY8C29xxx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"24MHz","Series":"PSOC®1 CY8C29xxx","Package":"Tray","RAM Size":"2K x 8","Core Size":"8-Bit","Peripherals":"POR, PWM, WDT","Connectivity":"I²C, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"64","Core Processor":"M8C","Package / Case":"100-LQFP","Data Converters":"A/D 12x14b; D/A 4x9b","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":"100-TQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$16.54","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/41e27d09c10ee1914d734d8ae7d5fd22.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can CY8C29866-24AXI be programmed with PSoC Creator?","answer":"Yes, the CY8C29866-24AXI is a PSoC1 device and is supported by Cypress's PSoC Creator IDE, which provides a graphical design environment for configuring the programmable analog and digital blocks."},{"question":"What is CY8C29866-24AXI's listed speed?","answer":"The CY8C29866-24AXI runs at 24 MHz, which is the maximum core clock frequency for the M8C processor in this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C29866-24AXI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C29866-24AXI 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}}