{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY8C3246AXI-131","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY8C3246AXI-131","canonicalUrl":"https://icboms.com/infineon/CY8C3246AXI-131","factsUrl":"https://icboms.com/api/mcp/products/CY8C3246AXI-131","rawCanonicalId":null},"summary":{"shortDescription":"Infineon PSoC® 3 CY8C32xx series, CY8C3246AXI-131, 8-Bit 8051 MCU at 50MHz, 64KB (64K x 8) FLASH, 8K x 8 RAM, 2K x 8 EEPROM, 62 I/O, CapSense, LCD, DMA, 16x12b ADC, 1x8b DAC, I²C/SPI/UART/LIN, 1.71V-5.5V, -40°C to 85°C, 100-TQFP.","salesMarkdown":"## 50 MHz 8051 with programmable analog — the PSoC 3 sweet spot The Infineon CY8C3246AXI-131 is an 8-bit PSoC 3 microcontroller built around a 50 MHz 8051 core, packing 64 KB of Flash, 8K x 8 RAM, and 2K x 8 EEPROM into a 100-pin TQFP. What sets this part apart from a plain 8051 is the PSoC fabric: on-chip CapSense for touch interfaces, a 16-channel 12-bit ADC, an 8-bit DAC, LCD drive, and a programmable digital block array that lets you route PWM, timer, and UART peripherals without external logic. ## 62 I/O and a 100-pin TQFP — what the footprint demands The 100-TQFP (14x14 mm body, 0.5 mm pitch) gives you 62 general-purpose I/O pins plus the dedicated power and ground pairs. That is a lot of signal for an 8-bit MCU — enough to drive a character LCD parallel bus, a row of CapSense buttons, and a handful of SPI sensors without I/O expanders. The 0.5 mm pitch means a standard two-layer board with 6/6 mil traces can route it, but the centre ground pad under the QFP needs a via stitch to the ground plane if you are pulling more than 100 mA through the core. No exposed thermal pad on this package — the TQFP dissipates through the leads and the board copper, so keep the ambient under 85°C for continuous operation. For a BOM that needs a proven 8-bit mixed-signal MCU without obsolescence risk, that matters: you are not chasing a sunset part through the broker channel. The ROHS3 compliance is current, so it passes EU and California reflow requirements as-is. ## CapSense and the 12-bit ADC — where it saves a PCB rev The integrated CapSense peripheral handles capacitive touch sensing without a dedicated controller chip — Infineon's own tuning software calibrates the sensitivity per channel. The 16-channel 12-bit SAR ADC runs at up to 1 Msps (typical) and can sample multiple analog inputs without an external mux. Pair that with the internal 1.71 V to 5.5 V regulator and you can power the analog block from the same rail as the digital core, simplifying the power tree. The 8-bit DAC is coarse but sufficient for a simple analog setpoint or a VCO tune voltage. ## Industrial temperature and connectivity No CAN interface on this variant; if you need CAN, step to the PSoC 5 family or add an external CAN transceiver on the UART.","metaTitle":"CY8C3246AXI-131 PSoC 3 MCU, 8051 50MHz, 64KB Flash, 100-TQFP","metaDescription":"Infineon CY8C3246AXI-131 PSoC 3 8-bit MCU: 8051 core at 50MHz, 64KB Flash, 8Kx8 RAM, CapSense, 16x12b ADC, -40 to 85°C.","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","Mounting Type":"Surface Mount","Number of I/O":"62","Core Processor":"8051","Package / Case":"100-LQFP","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":"100-TQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.24","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$13.24000","currency":"USD"},{"qty":10,"price":"$12.16400","currency":"USD"},{"qty":25,"price":"$11.65960","currency":"USD"},{"qty":90,"price":"$10.27289","currency":"USD"},{"qty":270,"price":"$9.76870","currency":"USD"},{"qty":450,"price":"$9.13849","currency":"USD"},{"qty":990,"price":"$8.38219","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ca1be62407dfa0bc41d1655ecfdd98f1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does CY8C3246AXI-131 have a CAN interface?","answer":"No. If your design requires CAN, you will need an external CAN transceiver on the UART or move to a PSoC 5 or PSoC 4 variant that includes CAN."},{"question":"What is the difference between CY8C3246AXI-131 and CY8C3246LXI-131?","answer":"The suffix difference — AXI versus LXI — typically indicates the temperature grade or package variant within the same PSoC 3 family. The LXI variant would be a different temperature grade or lead-free finish; check the specific datasheet marking for the exact distinction, as Infineon uses these suffix codes consistently across the series."},{"question":"What is the footprint of CY8C3246AXI-131?","answer":"It comes in a 100-TQFP package with a 14x14 mm body and 0.5 mm pin pitch. The supplier device package is 100-TQFP (14x14). That is a standard quad flat pack footprint — the same pattern used by many 100-pin MCUs from NXP, ST, and Microchip. The centre ground pad is not an exposed thermal pad on this package; heat dissipates through the leads and board copper."},{"question":"Is CY8C3246AXI-131 compatible with PSoC Creator?","answer":"Yes, PSoC Creator supports the PSoC 3 family including the CY8C32xx series. The IDE provides the schematic-based design entry for the programmable analog and digital blocks, plus the standard C compiler for the 8051 core. You will need the PSoC Creator version that explicitly lists PSoC 3 support — the toolchain is free from Infineon."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY8C3246AXI-131","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY8C3246AXI-131 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}}