{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S6938-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S6938-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S6938-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S6938-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 6000 series LM3S6938-IBZ50-A2, 32-bit MCU, 50 MHz, 256 KB Flash, 64 KB SRAM, Ethernet/I²C/SPI/UART/USART, 38 I/O, 2.25 V–2.75 V supply, -40°C to 85°C, 108-LFBGA tray.","salesMarkdown":"The Texas Instruments LM3S6938-IBZ50-A2 is a 32-bit ARM Cortex-M3 microcontroller from the Stellaris series, built for industrial control and networked edge applications. It runs at 50 MHz, carries 256 KB of Flash and 64 KB of SRAM, and integrates an Ethernet MAC plus a full set of serial interfaces — I²C, SPI, SSI, UART/USART, IrDA, and Microwire — so it can serve as the main controller on a small PLC, an HMI gateway, or a protocol converter between Modbus TCP and serial fieldbuses. The 108-ball BGA package (10x10 mm) keeps the footprint compact for space-constrained PCBs, and the -40°C to 85°C temperature range covers factory-floor and outdoor telecom enclosures without active cooling. At 50 MHz the Cortex-M3 can execute a PID loop or a Modbus TCP stack with enough headroom to also handle the 8-channel 10-bit ADC and the PWM outputs for motor or heater control. The 64 KB SRAM is sized for a few hundred bytes of TCP/IP buffer plus the application heap; if your firmware needs larger packet buffers or a real-time OS with multiple stacks, you will bump into the memory ceiling. The 256 KB Flash is adequate for a mid-size application with an Ethernet stack and a command-line debug interface, but leaves little room for over-the-air update images.","metaTitle":"LM3S6938-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 256 KB Flash, 108-BGA","metaDescription":"Obsolete LM3S6938-IBZ50-A2 ARM Cortex-M3 MCU from TI Stellaris series. 50 MHz, 256 KB Flash, 64 KB SRAM, Ethernet, 108-BGA. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"50MHz","title":"LM3S6938-IBZ50-A2","Series":"Stellaris® ARM® Cortex®-M3S 6000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","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":"38","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S6938","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"108-BGA (10x10)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$14.5400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/beae9e94c842b58b378a83db5cdfe822.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S6938-IBZ50-A2/alternatives.json"},"ai":{"faq":[{"question":"Can I use LM3S6938-IBZ50-A2T as a substitute for LM3S6938-IBZ50-A2?","answer":"The LM3S6938-IBZ50-A2T is the tape-and-reel variant of the same die and package; it is functionally identical but also obsolete. It can be used as a drop-in substitute if you find stock, but the same sourcing constraints apply."},{"question":"What is the pinout of LM3S6938-IBZ50-A2?","answer":"The pinout is defined in the Texas Instruments datasheet for the LM3S6938 family. The 108-ball BGA (10x10 mm) ball map is available in the official document; we recommend downloading it from the TI website or requesting it with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S6938-IBZ50-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/LM3S6938-IBZ50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}