{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S6432-EQC50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S6432-EQC50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S6432-EQC50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S6432-EQC50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 6000 series LM3S6432-EQC50-A2, 32-Bit Single-Core MCU, 50MHz, 96KB Flash, 32K x 8 RAM, Ethernet & serial connectivity, 100-LQFP, -40°C to 105°C.","salesMarkdown":"## What this Cortex-M3 brings to a networked control design Three 10-bit ADC channels handle analog feedback from sensors or potentiometers. ## 50 MHz core and memory — sizing the firmware and data buffers The 50 MHz Cortex-M3 delivers about 1.25 DMIPS/MHz, so you get roughly 62.5 DMIPS — enough for a lightweight RTOS, a TCP/IP stack with a few sockets, and a PID loop running at a few kilohertz. The 96 KB Flash holds the firmware image; if your application needs a bootloader plus a full Ethernet stack plus a control algorithm, check the linker map early — 96 KB fills faster than you expect once you add lwIP or a similar stack. The 32 KB SRAM splits between code data, stack, and packet buffers; a single Ethernet frame at 1518 bytes plus a few TCP sockets can eat 8–12 KB, leaving room for the control variables. The integrated Ethernet MAC saves a separate controller chip and its associated crystal and magnetics interface. You still need an external PHY (e.g., a DP83848 or LAN8720) and a set of RJ45 magnetics, but the MAC-to-PHY connection is a standard MII or RMII bus — four to eight signals plus a clock. The part also includes IrDA, Microwire, and SSI, which are less common on Cortex-M parts; if your design uses one of these legacy serial protocols, this MCU saves a level-shifter or a separate UART bridge. The 43 GPIOs are enough to drive a small LCD, a keypad, and a few status LEDs alongside the serial interfaces. ## Package and footprint — 100-LQFP layout notes That is a common footprint for mid-density MCUs — the board area is manageable, but the fine pitch means via-in-pad is not required; a standard dogbone fanout with 0.3 mm traces and 0.5 mm vias works. The internal oscillator is available, but for Ethernet operation an external 25 MHz crystal is typical to clock the MAC and PHY. ## Lifecycle and supply — active, no LTB risk The Stellaris family has been transitioned to the TM4C series at TI, but this specific order code remains active; if you need a second-source or a migration path, the TM4C123GH6PM is a pin-compatible Cortex-M4F with more Flash and a floating-point unit, though it runs on a 3.3 V supply instead of 2.5 V.","metaTitle":"LM3S6432-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"LM3S6432-EQC50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 96 KB Flash, 32 KB SRAM, Ethernet, industrial temp -40°C to 105°C, 100-LQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 6000","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"Ethernet, I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"43","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Data Converters":"A/D 3x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S6432","Program Memory Size":"96KB (96K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0ba6ea026782641865aa7afaf3432789.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S6432-EQC50-A2/alternatives.json"},"ai":{"faq":[{"question":"Is there a replacement for LM3S6432-EQC50-A2?","answer":"The TM4C123GH6PM is a pin-compatible Cortex-M4F alternative with more Flash and a floating-point unit, but it runs on a 3.3 V supply instead of 2.5 V. No official direct replacement is listed for this specific order code."},{"question":"What is the difference between LM3S6432 and TM4C123?","answer":"The TM4C123 operates at 3.3 V, while the LM3S6432 runs at 2.5 V. Pin compatibility depends on the specific package variant."},{"question":"Is LM3S6432-EQC50-A2 RoHS compliant?","answer":"The evidence does not explicitly state RoHS compliance status. Verify with the datasheet or manufacturer for the specific date code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S6432-EQC50-A2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S6432-EQC50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}