{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY9BF404NAPMC-G-UNE2","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"CY9BF404NAPMC-G-UNE2","canonicalUrl":"https://icboms.com/infineon/CY9BF404NAPMC-G-UNE2","factsUrl":"https://icboms.com/api/mcp/products/CY9BF404NAPMC-G-UNE2","rawCanonicalId":null},"summary":{"shortDescription":"Infineon FM3 MB9B400A series CY9BF404NAPMC-G-UNE2, 32-bit ARM Cortex-M3 MCU, 80 MHz, 256 KB Flash, 32 KB RAM, CANbus, 80 I/O, 100-LQFP, -40°C to 85°C.","salesMarkdown":"The 80 I/O count in a 100-LQFP package gives enough headroom for a sensor array or a local HMI without moving to a larger footprint. The Flash is enough for a CANopen stack, a Modbus RTU handler, and a few hundred lines of application logic. The 32 KB SRAM leaves room for a couple of large buffers — a 1 KB CAN mailbox plus a 2 KB UART FIFO, for example — without running into allocation pressure. If the firmware needs a full TCP/IP stack or a GUI frame buffer, the 32 KB SRAM becomes the tight constraint; that is the design decision to check before committing the BOM line. For a new design going into a five- to ten-year production run, this removes the sourcing risk that comes with NRND or obsolete parts. The ROHS3 compliance is current for EU and global markets. ## CANbus and industrial connectivity — what the peripheral set covers The CANbus interface is the standout connectivity feature here. It is a full CAN 2.0 controller, so pairing it with an external transceiver (like a TJA1050 or SN65HVD230) gives a node that talks on a 125 kbps to 1 Mbps bus. The peripheral list also includes DMA, LVD, POR, PWM, and WDT — the usual set for a motor-drive or power-conversion controller. The 16-channel 12-bit ADC can sample current-sense resistors or thermistors without an external ADC.","metaTitle":"CY9BF404NAPMC-G-UNE2 ARM Cortex-M3 MCU, 80 MHz, 256 KB Flash","metaDescription":"Infineon CY9BF404NAPMC-G-UNE2 32-bit MCU from FM3 MB9B400A series: ARM Cortex-M3 at 80 MHz, 256 KB Flash, 32 KB RAM, CANbus, 80 I/O, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"FM3 MB9B400A","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Speed":"80MHz","Series":"FM3 MB9B400A","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","Peripherals":"DMA, LVD, POR, PWM, WDT","Connectivity":"CANbus, CSIO, EBI/EMI, I²C, LINbus, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"80","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Data Converters":"A/D 16x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.7V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.48","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$10.48000","currency":"USD"},{"qty":10,"price":"$9.46800","currency":"USD"},{"qty":25,"price":"$9.02720","currency":"USD"},{"qty":90,"price":"$7.83844","currency":"USD"},{"qty":270,"price":"$7.48611","currency":"USD"},{"qty":450,"price":"$6.82558","currency":"USD"},{"qty":990,"price":"$5.94486","currency":"USD"}]},"links":{"datasheetUrl":"https://www.cypress.com/file/252156/download","sourceUrl":null},"ai":{"faq":[{"question":"Is CY9BF404NAPMC-G-UNE2 compatible with CAN bus?","answer":"Yes. The MCU includes a CANbus controller as part of its connectivity set. It requires an external CAN transceiver (e.g., TJA1050) to connect to a physical CAN bus. The controller supports standard CAN 2.0 frames."},{"question":"What is the operating frequency of CY9BF404NAPMC-G-UNE2?","answer":"The core operates at 80 MHz. That is the maximum clock speed for the ARM Cortex-M3 core on this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/CY9BF404NAPMC-G-UNE2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/CY9BF404NAPMC-G-UNE2 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}}