{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S1G21-IBZ80-A2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S1G21-IBZ80-A2","canonicalUrl":"https://icboms.com/texas-instruments/LM3S1G21-IBZ80-A2","factsUrl":"https://icboms.com/api/mcp/products/LM3S1G21-IBZ80-A2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris® ARM® Cortex®-M3S 1000 series LM3S1G21-IBZ80-A2, 32-bit single-core MCU, 80MHz, 384KB Flash, 64KB SRAM, 67 I/O, 108-LFBGA (10x10mm), tray, -40°C to 85°C.","salesMarkdown":"## Obsolete — sourcing this part now means the independent channel For BOM lines that still require this exact order code, procurement must turn to the independent distribution channel — surplus inventory, new-old-stock, or broker-sourced material. If your design can tolerate a pin-compatible migration, the Stellaris family includes other Cortex-M3 density variants in the same 108-BGA footprint, but no direct drop-in replacement is documented here. ## 108-LFBGA — what the package means for the assembly line The 108-ball LFBGA with a 10×10 mm body and 0.8 mm ball pitch is a fine-pitch BGA that demands careful PCB land pattern design and X-ray inspection post-reflow. The 67 I/O signals route through the ball array, so fanout vias and escape routing on a four-layer board are standard practice. ## 80 MHz core with 384 KB Flash — sizing the firmware and throughput budget The 80 MHz Cortex-M3 core delivers roughly 1.25 DMIPS/MHz, or about 100 DMIPS peak, adequate for real-time control loops, protocol stacks, and data processing in industrial applications. The 384 KB Flash is sized for mid-complexity firmware — enough for a FreeRTOS-based application with a TCP/IP stack and application logic, but tight for a full GUI or heavy signal-processing library. The 64 KB SRAM supports moderate data buffering; if your application needs large frame buffers or extensive lookup tables, budget external memory via the EBI/EMI interface.","metaTitle":"Texas Instruments LM3S1G21-IBZ80-A2 ARM Cortex-M3 MCU, 80MHz","metaDescription":"Texas Instruments Stellaris LM3S1G21-IBZ80-A2 ARM Cortex-M3 MCU, 80MHz, 384KB Flash, 64KB SRAM, 108-LFBGA, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"80MHz","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, DMA, POR, PWM, WDT","Connectivity":"EBI/EMI, I²C, IrDA, LINbus, Microwire, SPI, SSI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"67","Core Processor":"ARM® Cortex®-M3","Package / Case":"108-LFBGA","Product Status":"Obsolete","Data Converters":"A/D 8x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S1G21","Program Memory Size":"384KB (384K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"108-BGA (10x10)","Voltage - Supply (Vcc/Vdd)":"1.235V ~ 1.365V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/acebf1361b416656bd85e8d37228c41b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM3S1G21-IBZ80-A2 obsolete?","answer":"Yes, the LM3S1G21-IBZ80-A2 is listed as obsolete. Texas Instruments has ended production, and no official successor is documented in the available records. Procurement relies on the surplus and broker channel."},{"question":"What is the replacement for LM3S1G21-IBZ80-A2?","answer":"No official replacement part number is documented in the available records for the LM3S1G21-IBZ80-A2. The Stellaris family includes other Cortex-M3 parts in the same 108-BGA footprint, but pin-compatibility would need to be verified against the respective datasheets."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S1G21-IBZ80-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/LM3S1G21-IBZ80-A2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}