{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LPC43S20FBD144551","brand":"NXP USA Inc.","brandSlug":"nxp-usa-inc","productSlug":"LPC43S20FBD144551","canonicalUrl":"https://icboms.com/nxp-usa-inc/LPC43S20FBD144551","factsUrl":"https://icboms.com/api/mcp/products/LPC43S20FBD144551","rawCanonicalId":null},"summary":{"shortDescription":"NXP LPC43xx series, LPC43S20FBD144551, 32-bit ARM Cortex-M4/M0 dual-core MCU at 204 MHz, ROMless, 200 KB SRAM, 83 I/O, 144-LQFP, 2.2–3.6 V supply, -40 to 85 °C.","salesMarkdown":"## Dual-core at 204 MHz — asymmetric processing without the flash overhead The NXP LPC43S20FBD144551 is a 32-bit dual-core microcontroller pairing an ARM Cortex-M4 and a Cortex-M0 in a single 144-LQFP package, clocked at 204 MHz. The M4 handles DSP, motor-control loops, and protocol stacks; the M0 offloads housekeeping tasks such as GPIO scanning, UART polling, or watchdog supervision — freeing the M4 for deterministic real-time work. This is a ROMless device: all program memory must reside in external serial or parallel flash, which the integrated EBI/EMI and SPI/SSP interfaces support directly. The 200 KB SRAM provides buffer space for control data and communications without adding external RAM in many designs. The peripheral list includes CANbus, multiple I²C and SPI/SSP channels, USB with OTG, a motor-control PWM timer, and a 10-bit ADC with 8 channels plus a single 10-bit DAC — enough for sensor acquisition and closed-loop actuation in a single chip. ## ROMless architecture — plan the external flash early The LPC43S20FBD144551 has no on-chip program memory. An external serial or parallel flash must be added to the BOM for code storage. For dual-sourcing resilience, the LPC43xx family includes functionally similar parts with different SRAM and peripheral mixes — but any alternate must be verified for pin compatibility and software porting effort.","metaTitle":"NXP LPC43S20FBD144551 ARM Cortex-M4/M0 Dual-Core MCU, 204 MHz","metaDescription":"NXP LPC43S20FBD144551 32-bit dual-core MCU at 204 MHz, 200 KB SRAM, ROMless, 83 I/O, 144-LQFP, -40 to 85°C. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"NXP USA Inc.","Speed":"204MHz","Series":"LPC43xx","Package":"Bulk","RAM Size":"200K x 8","Core Size":"32-Bit Dual-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, I²C, IrDA, Microwire, SD, SPI, SSI, SSP, UART/USART, USB, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"83","Core Processor":"ARM® Cortex®-M4/M0","Package / Case":"144-LQFP","Product Status":"Active","Data Converters":"A/D 8x10b; D/A 1x10b","Oscillator Type":"Internal","lifecycle_stage":"unknown","Base Product Number":"LPC43S20","Program Memory Size":"-","Program Memory Type":"ROMless","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"144-LQFP (20x20)","Voltage - Supply (Vcc/Vdd)":"2.2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.0400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ba1705f4ff2f17abf3cc28f887106b51.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LPC43S20FBD144551/alternatives.json"},"ai":{"faq":[{"question":"Is the LPC43S20FBD144551 ROMless and does it require external flash?","answer":"Yes, the LPC43S20FBD144551 is ROMless — it has no internal program memory. An external serial or parallel flash must be added to the BOM for code storage."},{"question":"What is the closest pin-compatible alternative to the LPC43S20FBD144551?","answer":"The LPC43xx family includes pin-compatible variants with different SRAM sizes and peripheral sets, such as the LPC43S70 which offers more SRAM. All share the same 144-LQFP footprint and 0.5 mm pitch, but software migration may be needed due to peripheral differences."},{"question":"Where can I buy the LPC43S20FBD144551 and get current pricing?","answer":"The LPC43S20FBD144551 is sourced and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the listed speed of the LPC43S20FBD144551?","answer":"The LPC43S20FBD144551 operates at 204 MHz, shared by both the Cortex-M4 and Cortex-M0 cores."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp-usa-inc/LPC43S20FBD144551","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/LPC43S20FBD144551 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}