{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S8938-IBZ50-A2T","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S8938-IBZ50-A2T","canonicalUrl":"https://icboms.com/texas-instruments/LM3S8938-IBZ50-A2T","factsUrl":"https://icboms.com/api/mcp/products/LM3S8938-IBZ50-A2T","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 8000 series LM3S8938-IBZ50-A2T, 32-bit MCU, 50MHz, 256KB Flash, 64K x 8 RAM, 38 I/O, CAN/Ethernet, 108-LFBGA, -40 to 85°C.","salesMarkdown":"## 50MHz Cortex-M3 with CAN and Ethernet — the industrial-control workhorse It integrates a CANbus interface and a 10/100 Ethernet MAC, making it a single-chip fit for industrial gateways, motor drives, and building-automation controllers that need both fieldbus and IP connectivity. The 108-LFBGA (10x10 mm) package packs 38 GPIOs and an 8-channel 10-bit ADC into a compact footprint, with a supply range of 2.25V to 2.75V. ## 256KB Flash, 64KB SRAM — firmware and data buffer budget The 256KB Flash supports a full TCP/IP stack, CANopen or EtherCAT slave code, plus application logic without external memory. The 64KB SRAM handles packet buffers and real-time data queues; for Ethernet-heavy designs, budget about 16KB for the stack and descriptor rings, leaving 48KB for application state. If your firmware exceeds 256KB, this part forces a code-shrink or a move to the larger-memory Stellaris siblings. ## 108-BGA — layout and rework considerations The 108-LFBGA (10x10 mm) uses a 0.8 mm ball pitch, which is routable on a 4-layer board with 5/5 mil trace/space. No thermal pad — the BGA body dissipates through the balls to the PCB ground plane. For rework, MSL 3 handling applies: bake at 125°C for 24 hours if the moisture barrier bag has been open longer than the floor life. A 10x10 mm BGA is reballable with a stencil and preforms, but the fine pitch demands a good rework station. Expect date codes from the last production runs; we screen for counterfeit and test to datasheet limits before shipment.","metaTitle":"LM3S8938-IBZ50-A2T Stellaris ARM Cortex-M3 MCU, 50MHz","metaDescription":"LM3S8938-IBZ50-A2T is a 32-bit ARM Cortex-M3 MCU from the Stellaris 8000 series, 50MHz, 256KB Flash, 64KB SRAM, CAN/Ethernet, 108-BGA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 8000","Package":"Tape & Reel (TR)","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, 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","Product Status":"Obsolete","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S8938","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":"$33.9700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/12dc9f2c7afbe52d000502ce433673bf.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S8938-IBZ50-A2T/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S8938-IBZ50-A2T obsolete?","answer":"Yes, TI lists the LM3S8938-IBZ50-A2T as Obsolete. There is no official replacement part designated."},{"question":"What is a replacement for LM3S8938-IBZ50-A2T?","answer":"No official replacement has been published for the LM3S8938-IBZ50-A2T. For a pin-compatible alternative within the Stellaris family, check the LM3S8000 series — but verify the specific peripheral mix and package variant against your BOM. Without an official cross-reference, any substitution requires a full design review."},{"question":"Can LM3S8938-IBZ50-A2T be programmed with ARM tools?","answer":"Yes. The core is an ARM Cortex-M3, so it works with standard ARM development tools: Keil MDK, IAR EWARM, and GCC-based toolchains (ARM GCC, Segger Embedded Studio). Debugging uses the Serial Wire Debug (SWD) interface via a standard JTAG/SWD probe like the J-Link or ST-Link."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S8938-IBZ50-A2T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S8938-IBZ50-A2T 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}}