{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430A155IPZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430A155IPZR","canonicalUrl":"https://icboms.com/texas-instruments/MSP430A155IPZR","factsUrl":"https://icboms.com/api/mcp/products/MSP430A155IPZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430A155IPZR, MSP430F6xx series 16-bit MCU, 25MHz core, 64KB Flash, 4KB RAM, 72 I/O, 1.8–3.6V supply, 100-LQFP, -40 to 85°C.","salesMarkdown":"## What makes the MSP430A155IPZR different from a typical 16-bit MCU The standout feature is the data converter section: alongside a conventional 8-channel 10-bit ADC, it integrates three 24-bit sigma-delta ADCs — a capability more typical of a dedicated metering SoC than a general-purpose MCU. This makes the part a natural fit for precision sensor front-ends, flow metering, weigh scales, and industrial process control where you need both a control core and high-resolution analog measurement on the same die. ## 24-bit sigma-delta ADC — why it matters for your sensor design Three 24-bit sigma-delta ADCs are the headline differentiator. Most 16-bit MCUs top out at a 12-bit SAR converter; the MSP430A155IPZR brings 24-bit resolution that can directly digitize bridge sensors, thermocouples, or strain gauges without an external ADC. The 8x10-bit ADC handles the faster, lower-resolution channels (current sensing, position feedback) while the sigma-delta channels take the precision measurements. This saves a separate analog front-end IC and the associated board area and BOM cost. ## Memory budget and peripheral set for firmware planning 64 KB of Flash is comfortable for a real-time control loop with a communication stack (I²C, SPI, UART, IrDA, LINbus are all on-chip). The 4 KB RAM is the tighter constraint — it limits buffering for display data or large packet handling. If your application needs a graphical LCD frame buffer or extensive data logging, budget the RAM carefully or plan for external memory. The integrated LCD driver, PWM timer, and watchdog timer cover the typical control-and-display use case without external glue logic.","metaTitle":"Texas Instruments MSP430A155IPZR 16-bit MCU, 25MHz","metaDescription":"TI MSP430A155IPZR 16-bit MCU with 25MHz core, 64KB Flash, 4KB RAM, 72 I/O, 24-bit sigma-delta ADC. Active lifecycle, -40 to 85°C. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"25MHz","Series":"MSP430F6xx","Package":"Tape & Reel (TR)","RAM Size":"4K x 8","Core Size":"16-Bit","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SCI, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"72","Core Processor":"MSP430","Package / Case":"100-LQFP","Product Status":"Active","Data Converters":"A/D 8x10b, 3x24b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"MSP430A155","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.8778","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4d6497d44b37ad9be23ad8aca111200b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MSP430A155IPZR/alternatives.json"},"ai":{"faq":[{"question":"Does MSP430A155IPZR have an internal oscillator?","answer":"Yes, the MSP430A155IPZR includes an internal oscillator, so it can run without an external crystal or clock source for many applications. This simplifies the BOM and saves board space."},{"question":"How much RAM does MSP430A155IPZR have?","answer":"The MSP430A155IPZR has 4 KB of RAM, organized as 4K x 8 bits. This is adequate for control loops and moderate data buffering, but applications with large display buffers or extensive data logging should budget carefully."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430A155IPZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430A155IPZR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}