{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C21434-24LTXI","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C21434-24LTXI","canonicalUrl":"https://icboms.com/infineon/CY8C21434-24LTXI","factsUrl":"https://icboms.com/api/mcp/products/CY8C21434-24LTXI","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSOC®1 CY8C21xxx series 8-bit M8C MCU, 24 MHz, 8 KB Flash, 512 x 8 RAM, 28 I/O, I²C/SPI/UART/USART, 28x8b ADC, 2.4 V to 5.25 V, -40°C to 85°C, 32-VFQFN Exposed Pad.","salesMarkdown":"## What this 8-bit PSOC®1 MCU brings to the BOM The Infineon CY8C21434-24LTXI is an 8-bit M8C-core microcontroller from the PSOC®1 CY8C21xxx family, clocked at 24 MHz. It has 8 KB of Flash program memory and 512 x 8 bytes of RAM. On-chip peripherals include POR, PWM, and WDT for basic housekeeping, plus I²C, SPI, and UART/USART serial interfaces for connecting to sensors, displays, or a host controller. The 28-channel 8-bit ADC covers analog inputs without an external converter — a practical fit for multi-sensor acquisition in a space-constrained design. ## Supply voltage and power rail fit The supply range is 2.4 V to 5.25 V. The internal oscillator eliminates an external crystal for most timing needs. ## Memory budget — what 8 KB Flash and 512 x 8 RAM can hold 8 KB of Flash and 512 x 8 bytes of RAM handle a dedicated control task with a serial stack and application code. ## Lifecycle and sourcing posture The CY8C21434-24LTXI carries an Active lifecycle status per Infineon's product records. It is ROHS3 compliant. No last-time-buy or end-of-life notices are on file. For dual-sourcing resilience, the CY8C29466-24PVXI is a functional peer within the PSOC®1 M8C family — same core, same 24 MHz speed, same serial interfaces and POR/PWM/WDT peripherals — though it offers more memory and a different package.","metaTitle":"CY8C21434-24LTXI Infineon PSOC®1 8-bit MCU, 24 MHz","metaDescription":"Infineon CY8C21434-24LTXI PSOC®1 8-bit MCU: M8C core at 24 MHz, 8 KB Flash, 512 x 8 RAM, 28 I/O, I²C/SPI/UART, 28x8b ADC, -40°C to 85°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"PSOC®1 CY8C21xxx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"24MHz","Series":"PSOC®1 CY8C21xxx","Package":"Tray","RAM Size":"512 x 8","Core Size":"8-Bit","Peripherals":"POR, PWM, WDT","Connectivity":"I²C, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"28","Core Processor":"M8C","Package / Case":"32-VFQFN Exposed Pad","Data Converters":"A/D 28x8b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"8KB (8K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-QFN (5x5)","Voltage - Supply (Vcc/Vdd)":"2.4V ~ 5.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.63","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.63000","currency":"USD"},{"qty":10,"price":"$5.99300","currency":"USD"},{"qty":25,"price":"$5.71440","currency":"USD"},{"qty":80,"price":"$4.96188","currency":"USD"},{"qty":230,"price":"$4.73891","currency":"USD"},{"qty":490,"price":"$4.32078","currency":"USD"},{"qty":980,"price":"$3.76326","currency":"USD"},{"qty":2450,"price":"$3.62388","currency":"USD"}]},"links":{"datasheetUrl":"https://www.infineon.com/dgdl/Infineon-CY8C21634_CY8C21534_CY8C21434_CY8C21334_CY8C21234_PSoC_Programmable_System-on-Chip-DataSheet-v36_00-EN.pdf?fileId=8ac78c8c7d0d8da4017d0ecd82ef47ed&utm_source=cypress&utm_medium=referral&utm_campaign=202110_globe_en_a","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between CY8C21434-24LTXI and CY8C21434-24PVXI?","answer":"The CY8C21434-24PVXI is the same M8C core, 24 MHz, 8 KB Flash, and peripheral set, but packaged in a 28-pin SSOP (5.3 mm body) versus the 32-QFN (5x5 mm) of the -24LTXI. The QFN variant offers 28 I/O versus 24 on the SSOP, and the QFN's exposed pad improves thermal dissipation. They are not pin-compatible — the PCB footprint and pinout differ."},{"question":"Can CY8C21434-24LTXI be a replacement for CY8C21434-24PVXI?","answer":"No — they are not pin-compatible. The -24LTXI is a 32-QFN package with 28 I/O, while the -24PVXI is a 28-pin SSOP with 24 I/O. A PCB redesign is required to swap between them. Functionally they share the same core, memory, and peripherals, so firmware can be ported with minimal changes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C21434-24LTXI","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C21434-24LTXI 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}}