{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C3446AXI-099T","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C3446AXI-099T","canonicalUrl":"https://icboms.com/infineon/CY8C3446AXI-099T","factsUrl":"https://icboms.com/api/mcp/products/CY8C3446AXI-099T","rawCanonicalId":null},"summary":{"shortDescription":"Infineon (Cypress) PSOC® 3 CY8C34xx, CY8C3446AXI-099T, 8-bit 8051 MCU, 50MHz, 64KB Flash, 8K x 8 RAM, 2K x 8 EEPROM, 62 I/O, CapSense, USB, 100-TQFP, -40°C to 85°C.","salesMarkdown":"## 8051 core at 50 MHz — what it means for the loop The CY8C3446AXI-099T is an 8-bit 8051 MCU clocked at 50 MHz, part of the PSOC® 3 CY8C34xx family from Infineon (formerly Cypress). It carries 64 KB of Flash program memory, 8K x 8 of RAM, and 2K x 8 of EEPROM — enough code and data space for a medium-complexity control loop with field-upgradeable firmware. The 8051 core at this speed handles real-time tasks like sensor polling, PID updates, and communication stack processing without a dedicated co-processor. ## CapSense and mixed-signal peripherals On-chip peripherals include CapSense (capacitive touch sensing), DMA, LCD drive, POR, PWM, and WDT. The data converter block provides a 16-channel 12-bit ADC and a 2-channel 8-bit DAC — this is a genuine mixed-signal controller, not just a digital MCU with an afterthought ADC. For a touch-interface panel or an analog sensor front-end, you can route signals directly into the ADC without an external converter. ## Supply range and temperature grade Supply voltage spans 1.71 V to 5.5 V. Operating temperature range is -40°C to 85°C. ## Lifecycle and sourcing The CY8C3446AXI-099T carries an Active product status and is ROHS3 compliant. No end-of-life notice or last-time-buy window is in effect. For dual-sourcing or supply resilience, the PSOC® 3 family shares the same 8051 core and peripheral set across density options, but no pin-compatible second-source alternate is listed in the official cross-reference.","metaTitle":"CY8C3446AXI-099T PSOC 3 MCU, 8051 50MHz, 64KB Flash","metaDescription":"CY8C3446AXI-099T PSOC 3 8-bit MCU with 8051 core at 50MHz, 64KB Flash, 8Kx8 RAM, CapSense, 16ch 12-bit ADC, industrial temp -40°C to 85°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"PSOC® 3 CY8C34xx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"50MHz","Series":"PSOC® 3 CY8C34xx","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"62","Core Processor":"8051","Package / Case":"100-LQFP","Data Converters":"A/D 16x12b; D/A 2x8b","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":"100-TQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.1","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$14.10000","currency":"USD"},{"qty":10,"price":"$12.96300","currency":"USD"},{"qty":25,"price":"$12.42560","currency":"USD"},{"qty":100,"price":"$10.94790","currency":"USD"},{"qty":250,"price":"$10.41056","currency":"USD"},{"qty":500,"price":"$9.73892","currency":"USD"},{"qty":1500,"price":"$8.93295","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/033a7647e9725ad6556608a72e8ec755.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is CY8C3446AXI-099T obsolete or active?","answer":"The CY8C3446AXI-099T is Active — no end-of-life or last-time-buy notice is in effect. It is safe to commit to a production BOM without near-term redesign risk."},{"question":"What is the equivalent of CY8C3446AXI-099T?","answer":"Within the PSOC® 3 CY8C34xx family, density variants share the same 8051 core and peripheral set, but a direct drop-in replacement from another manufacturer is not documented."},{"question":"How to program CY8C3446AXI-099T?","answer":"Programming is done via the standard PSOC® Creator IDE or a third-party toolchain supporting the 8051 core. The device uses an internal oscillator and supports in-system programming through the SWD (Serial Wire Debug) interface. No external crystal is required for programming."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C3446AXI-099T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C3446AXI-099T 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}}