{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1958-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1958-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1958-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1958-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series microcontroller, LM3S1958-IBZ50-A2, 32-bit single-core, 50 MHz, 256KB flash, 64KB SRAM, 52 I/O, 108-BGA, -40 to 85°C.","salesMarkdown":"## 50 MHz Cortex-M3 with 256 KB flash — what it means for a control board The LM3S1958-IBZ50-A2 is a Texas Instruments Stellaris ARM Cortex-M3S 1000 series MCU running at 50 MHz. That clock rate, paired with a single-cycle multiply and a 3-stage pipeline, handles real-time control loops — motor commutation, sensor polling, or protocol parsing — without an external DSP. On-chip memory: 256 KB of flash for firmware and 64 KB of SRAM for data buffers and stack. For a typical industrial sensor hub logging 10-bit ADC readings at 1 kHz, the SRAM holds several seconds of raw data before a flash write is needed. The 108-ball BGA (10x10 mm footprint) keeps the board area tight but demands a controlled reflow profile — the 0.80 mm ball pitch is manageable with standard SMT lines, though rework without a BGA station is impractical. ## Peripheral set and supply rail — BOM-fit notes 52 general-purpose I/O lines give headroom for a mixed-signal board with parallel LCD data, keypad matrix, and status LEDs without needing a port expander. Connectivity covers I²C, SPI, SSI, UART, IrDA, and Microwire — enough to talk to external ADCs, FRAM, or a radio module on a single bus. On-chip peripherals include brown-out detect, POR, PWM, and a watchdog timer, reducing the external supervisor IC count. The internal oscillator saves a crystal for cost-sensitive builds where ±1% accuracy is acceptable. The 8-channel 10-bit ADC samples at up to 1 Msps — adequate for reading potentiometers, thermistors, or current-sense resistors in a motor-drive feedback path. The -40 to 85 °C industrial temperature grade suits outdoor enclosures, engine bays, or unheated factory floors. ## Obsolete — what that means for procurement For a BOM that already qualifies this MCU, the sourcing route is independent distribution — sealed reels with consistent date-codes are preferred over mixed-date auction lots.","metaTitle":"Texas Instruments LM3S1958-IBZ50-A2 ARM Cortex-M3 MCU","metaDescription":"Texas Instruments LM3S1958-IBZ50-A2 ARM Cortex-M3 MCU, 50 MHz, 256KB flash, 64KB SRAM, 108-BGA. Obsolete; 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":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 1000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Not For New Designs","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1958","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":"$19.9491","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9c828580ab3372a02960288eaf7dc57f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1958-IBZ50-A2/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1958-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/LM3S1958-IBZ50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:45:40.565Z","lastPublished":"2026-07-21T02:45:40.565Z","indexable":true}}