{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C3444LTI-119T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C3444LTI-119T","canonicalUrl":"https://icboms.com/infineon/CY8C3444LTI-119T","factsUrl":"https://icboms.com/api/mcp/products/CY8C3444LTI-119T","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSoC® 3 CY8C34xx 8-bit 8051 MCU, CY8C3444LTI-119T, 50 MHz, 16 KB Flash, 2K x 8 RAM, 25 I/O, 48-QFN (7x7) exposed pad, -40°C to 85°C.","salesMarkdown":"## 8051 core at 50 MHz with programmable analog The CY8C3444LTI-119T runs an 8051 core at 50 MHz — the top speed in the PSoC 3 family. For a touch-scanning or sensor-fusion application, that clock budget covers the CapSense processing loop and the LCD refresh DMA transfers without stalling the serial interface. Program memory is 16 KB Flash (16K x 8), with 2K x 8 RAM and 512 x 8 EEPROM. The 16 KB footprint fits a medium-complexity 8051 stack — a CapSense library, a Modbus or custom serial protocol, and a state machine for the analog front-end. That means it runs from a 3.6 V Li-ion cell down to the regulator dropout, or from a 5 V industrial rail without a level shifter on the I/O. ## Peripheral mix: CapSense, analog, and serial in one QFN The on-chip analog block includes a 16-channel, 12-bit ADC and two 8-bit DACs. The 12-bit ADC resolves sensor inputs (temperature, pressure, current shunt) with enough margin for a 0.1% full-scale reading after calibration; the 8-bit DAC handles trim voltages or analog set-points. Serial connectivity covers I²C, SPI, UART/USART, and LINbus — the LIN controller is useful for automotive sub-systems or industrial sensor busses that use the LIN physical layer. The EBI/EMI interface allows expansion to external memory or parallel peripherals over the 25 available I/O lines. The peripheral set includes CapSense, DMA, LCD drive, POR, PWM, and WDT. The DMA engine offloads the 8051 core during ADC scan sequences or LCD frame refreshes — the core only handles the result parsing, not the data transfer. Housed in a 48-VFQFN with exposed pad (7x7 mm, 0.5 mm pitch). The 48-QFN footprint occupies 49 mm² — tight enough for a two-layer board if the decoupling caps sit on the back side under the package. The 25 I/O count means some pins are dedicated to analog inputs or special functions; confirm each signal's assignment against the reference manual before committing the layout. ROHS3 Compliant (no exemptions). The part carries the standard Infineon compliance documentation — RoHS, REACH, and the material declaration are available per the product support page. Available in Tape & Reel (TR) for reel-fed production lines, or Cut Tape (CT) for prototype and low-volume builds.","metaTitle":"CY8C3444LTI-119T PSoC 3 MCU, 50 MHz, 16 KB Flash, 48-QFN","metaDescription":"Infineon CY8C3444LTI-119T, PSoC 3 8051 MCU, 50 MHz, 16 KB Flash, 2K x 8 RAM, 48-QFN (7x7). Active production, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":"PSOC® 3 CY8C34xx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"50MHz","Series":"PSOC® 3 CY8C34xx","Package":"Tape & Reel (TR); Cut Tape (CT)","RAM Size":"2K x 8","Core Size":"8-Bit","EEPROM Size":"512 x 8","Peripherals":"CapSense, DMA, LCD, POR, PWM, WDT","Connectivity":"EBI/EMI, I²C, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"25","Core Processor":"8051","Package / Case":"48-VFQFN Exposed Pad","Data Converters":"A/D 16x12b; D/A 2x8b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-QFN (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.3","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.30000","currency":"USD"},{"qty":10,"price":"$10.20600","currency":"USD"},{"qty":25,"price":"$9.73120","currency":"USD"},{"qty":100,"price":"$8.44970","currency":"USD"},{"qty":250,"price":"$8.06992","currency":"USD"},{"qty":500,"price":"$7.35784","currency":"USD"},{"qty":1000,"price":"$6.40845","currency":"USD"},{"qty":2000,"price":"$6.17110","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/033a7647e9725ad6556608a72e8ec755.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source for CY8C3444LTI-119T?","answer":"The CY8C29566-24AXIT (PSoC 1, M8C core at 24 MHz) is a different core architecture and runs at half the clock speed. It is not a pin-compatible or software-compatible drop-in. The CY8C4245LQI-483 (PSoC 4, ARM Cortex-M0) is a 32-bit alternative but requires a full firmware port. Neither replaces the CY8C3444LTI-119T without board and code changes."},{"question":"What compliance documentation does Infineon provide for CY8C3444LTI-119T?","answer":"The part is ROHS3 Compliant. Infineon provides a material declaration, RoHS certificate of compliance, and REACH SVHC declaration through their product support portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C3444LTI-119T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C3444LTI-119T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}