{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C3246LTI-128","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C3246LTI-128","canonicalUrl":"https://icboms.com/infineon/CY8C3246LTI-128","factsUrl":"https://icboms.com/api/mcp/products/CY8C3246LTI-128","rawCanonicalId":null},"summary":{"shortDescription":"Cypress PSOC® 3 CY8C32xx, CY8C3246LTI-128, 8-Bit 8051 MCU, 50MHz, 64KB (64K x 8) FLASH, 8K x 8 RAM, 2K x 8 EEPROM, 68-VFQFN Exposed Pad, -40°C ~ 85°C.","salesMarkdown":"## 50 MHz 8051 with a wide supply — the PSoC 3 mixed-signal workhorse The Cypress CY8C3246LTI-128 is an 8-bit 8051-core MCU from the PSoC 3 family, clocked at 50 MHz. What sets this part apart from a plain 8051 is the programmable analog and digital fabric around the core — 16 channels of 12-bit ADC, an 8-bit DAC, CapSense touch-sensing, LCD drive, and USB connectivity are all on-chip. The supply range from 1.71V to 5.5V means it can run directly from a 2-cell alkaline stack, a single Li-ion cell, or a legacy 5V industrial rail without a regulator in between. Program memory is 64 KB Flash, with 8K x 8 RAM and 2K x 8 EEPROM for non-volatile parameter storage. ## 68-QFN package and industrial temperature range The part comes in a 68-VFQFN with exposed pad (68-QFN 8x8 mm), surface-mount only. The internal oscillator is trimmed to 1% accuracy, enough for UART and most non-critical timing — an external crystal is still advisable for USB or CAN. ## CapSense and USB — the application drivers The CapSense peripheral is Cypress's capacitive touch-sensing engine, capable of driving buttons, sliders, and proximity sensors without external capacitive-sense ICs. The LCD drive can directly segment a glass or plastic LCD panel, saving a display driver. USB connectivity (full-speed, device/host/OTG) is handled by the on-chip USB block with an integrated transceiver — no external PHY needed. These three features together make the CY8C3246LTI-128 a natural fit for human-machine interface (HMI) panels, appliance control boards, medical front-panel controllers, and portable instrumentation where a touch interface and USB data logging are required.","metaTitle":"Cypress CY8C3246LTI-128 PSoC 3 MCU, 8-bit 8051, 50 MHz","metaDescription":"Cypress CY8C3246LTI-128 PSoC 3 MCU: 8-bit 8051 core at 50 MHz, 64KB Flash, 8K x 8 RAM, 2K x 8 EEPROM, integrated CapSense, USB, 16x12b ADC. Active, RoHS3.","metaKeywords":null},"attributes":{"series":"PSOC® 3 CY8C32xx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Speed":"50MHz","Series":"PSOC® 3 CY8C32xx","Package":"Tray","RAM Size":"8K x 8","Core Size":"8-Bit","EEPROM Size":"2K x 8","Peripherals":"CapSense, DMA, LCD, POR, PWM, WDT","Connectivity":"EBI/EMI, I²C, LINbus, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"38","Core Processor":"8051","Package / Case":"68-VFQFN Exposed Pad","Data Converters":"A/D 16x12b; D/A 1x8b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"68-QFN (8x8)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.79","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$12.79000","currency":"USD"},{"qty":10,"price":"$11.75400","currency":"USD"},{"qty":25,"price":"$11.26720","currency":"USD"},{"qty":80,"price":"$9.92725","currency":"USD"},{"qty":260,"price":"$9.43996","currency":"USD"},{"qty":520,"price":"$8.83094","currency":"USD"},{"qty":1040,"price":"$8.10010","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ca1be62407dfa0bc41d1655ecfdd98f1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can CY8C3246LTI-128 be used for capacitive touch sensing?","answer":"Yes, the part integrates a CapSense peripheral, which is Cypress's capacitive touch-sensing engine. It can drive buttons, sliders, and proximity sensors without an external capacitive-sense IC."},{"question":"What is the difference between CY8C3246LTI-128 and CY8C3246AZI-128?","answer":"The evidence does not carry a specification for the CY8C3246AZI-128 variant. The difference is typically package-related — the LTI suffix indicates a QFN package (68-VFQFN), while the AZI suffix would indicate a TQFP package. The die and functional specifications are otherwise the same for a given density and speed grade."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C3246LTI-128","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C3246LTI-128 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}}