{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1608-IBZ50-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1608-IBZ50-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1608-IBZ50-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1608-IBZ50-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris ARM Cortex-M3S 1000 series 32-bit MCU, LM3S1608-IBZ50-A2, 50 MHz, 128 KB flash, 32 KB SRAM, 108-BGA, industrial temp.","salesMarkdown":"## Cortex-M3 core at 50 MHz — what the speed buys you The LM3S1608-IBZ50-A2 runs an ARM Cortex-M3 core at 50 MHz — this is the processing ceiling for the interrupt-driven control loops typical in motor-drive or sensor-fusion firmware. The 32-bit single-core architecture delivers deterministic context switching; the NVIC handles up to 32 interrupt vectors with a fixed 12-cycle entry latency, so the core can service a fast sensor edge without polling overhead. On-chip memory is 128 KB of flash for program store and 32 KB of SRAM for data. That flash footprint accommodates a moderate HAL plus a real-time operating system kernel and leaves room for application logic; the 32 KB SRAM supports a few kilobytes of stack and heap per task before hitting the ceiling. A firmware developer targeting this part should budget the SRAM for the interrupt stack and DMA buffers first. Connectivity spans I²C, SPI, SSI, UART/USART, and IrDA — enough to talk to external ADCs, serial flash, or a fieldbus transceiver without an external UART bridge. The 52 GPIOs are general-purpose but share pads with the serial peripherals; a layout that routes out all four UARTs and two SPI buses consumes roughly half the available pins, leaving two dozen for discrete I/O. The on-chip ADC is 8-channel, 10-bit — adequate for reading potentiometers, current-sense resistors, or temperature sensors at moderate update rates. ## Package, supply, and temperature grade Housed in a 108-ball BGA (10x10 mm body), the part requires a multi-layer PCB for fan-out — the 0.80 mm ball pitch does not route on a two-layer board without blind vias. The internal oscillator starts up without an external crystal, though a crystal on the main oscillator input improves accuracy for time-sensitive serial protocols.","metaTitle":"Texas Instruments LM3S1608-IBZ50-A2 MCU, Cortex-M3, 50 MHz","metaDescription":"Texas Instruments LM3S1608-IBZ50-A2 Stellaris ARM Cortex-M3 MCU, 50 MHz, 128 KB flash, 32 KB SRAM, 108-BGA. NRND — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 1000","Package":"Tray","RAM Size":"32K 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":"LM3S1608","Program Memory Size":"128KB (128K 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":"$26.4680","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/511450777513623b3ec616c6ad724877.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S1608-IBZ50-A2/alternatives.json"},"ai":{"faq":[{"question":"What package does LM3S1608-IBZ50-A2 use?","answer":"It is supplied in a 108-ball LFBGA with a 10x10 mm body (supplier device package 108-BGA). The ball pitch is 0.80 mm, requiring a multi-layer PCB for fan-out."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1608-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/LM3S1608-IBZ50-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T02:42:41.362Z","lastPublished":"2026-07-21T02:42:41.362Z","indexable":true}}