{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LPC43S50FET256,551","brand":"NXP USA Inc.","brandSlug":"nxp-usa-inc","productSlug":"LPC43S50FET256~6551","canonicalUrl":"https://icboms.com/nxp-usa-inc/LPC43S50FET256~6551","factsUrl":"https://icboms.com/api/mcp/products/LPC43S50FET256%2C551","rawCanonicalId":null},"summary":{"shortDescription":"NXP LPC43xx series, 32-bit dual-core ARM Cortex-M4/M0 MCU, LPC43S50FET256,551, 204MHz, 264K×8 SRAM, ROMless, 164 I/O, Ethernet, USB OTG, CANbus, I2S, 256-LBGA (17×17mm), tray, -40°C to 85°C, 2.2–3.6V.","salesMarkdown":"## 204 MHz dual-core — what it buys you The M4 at 204 MHz handles the heavy lifting — control loops, protocol stacks, and DSP filtering — while the M0 manages I2C, SPI, UART housekeeping, and wake-up logic. That split avoids the interrupt overhead a single core would carry when juggling both Ethernet and a motor PWM loop. For a design that currently runs an M4-only part and struggles with latency during CAN traffic peaks, the M0 offload is a genuine throughput gain without a clock-rate increase. ## ROMless — plan the Flash companion The LPC43S50 has zero on-chip program memory. Every instruction comes from an external Flash device, typically a quad-SPI NOR part connected to the SPIFI interface. The BOM must budget for that Flash, plus the PCB routing for the SPI lines. The 164 available I/O leave plenty of headroom for a parallel EBI/EMI bus if a larger code footprint is needed, but the default path is a serial Flash in the 8-pin SOIC footprint near the LBGA.","metaTitle":"NXP LPC43S50FET256,551 ARM Cortex-M4/M0 MCU, 204MHz, 256-LBGA","metaDescription":"NXP LPC43S50FET256,551 32-bit dual-core ARM Cortex-M4/M0 MCU at 204MHz, 264K×8 SRAM, ROMless, 164 I/O, Ethernet/USB OTG/CANbus, 256-LBGA. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"204MHz","title":"LPC43S50FET256,551","Series":"LPC43xx","Package":"Tray","RAM Size":"264K x 8","Core Size":"32-Bit Dual-Core","Peripherals":"Brown-out Detect/Reset, DMA, I2S, LCD, Motor Control PWM, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, Ethernet, I2C, IrDA, Microwire, SD, SPI, SSI, SSP, UART/USART, USB, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"164","Core Processor":"ARM® Cortex®-M4/M0","Package / Case":"256-LBGA","Data Converters":"A/D 8x10b; D/A 1x10b","Oscillator Type":"Internal","Base Product Number":"LPC43S50","Program Memory Type":"ROMless","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"256-LBGA (17x17)","Voltage - Supply (Vcc/Vdd)":"2.2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.7081","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7828eeeb50f7ef79fa022192b7d9e7dc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LPC43S50FET256%2C551/alternatives.json"},"ai":{"faq":[{"question":"Where to buy LPC43S50FET256,551?","answer":"The LPC43S50FET256,551 is available to order through independent distribution channels. Submit an RFQ for current pricing and availability — lead time and stock levels are confirmed at quote time."},{"question":"Does LPC43S50FET256,551 require external flash?","answer":"Yes, the LPC43S50FET256,551 is ROMless — it has no on-chip program memory and requires an external Flash device for code storage."},{"question":"What is LPC43S50FET256,551's speed?","answer":"The LPC43S50FET256,551 runs at 204 MHz on the ARM Cortex-M4 core."},{"question":"What is the difference between LPC43S50 and LPC4370?","answer":"The LPC4370 includes a Cortex-M0 sub-core and an integrated 10-bit ADC with a sample rate up to 400 MS/s, while the LPC43S50 lacks that high-speed ADC. Both share the dual-core M4/M0 architecture and 204 MHz speed, but the LPC4370 targets applications needing fast analog sampling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp-usa-inc/LPC43S50FET256~6551","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp-usa-inc/LPC43S50FET256~6551 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T17:20:20.394Z","lastPublished":"2026-07-11T17:20:20.394Z","indexable":true}}