{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430G2231IRSA16R","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430G2231IRSA16R","canonicalUrl":"https://icboms.com/texas-instruments/MSP430G2231IRSA16R","factsUrl":"https://icboms.com/api/mcp/products/MSP430G2231IRSA16R","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430G2xx series 16-bit MCU, MSP430G2231IRSA16R, 16 MHz, 2 KB Flash, 128 x 8 RAM, I²C/SPI, 10 I/O, 8-ch 10-bit ADC, 1.8V–3.6V, -40°C to 85°C, 16-QFN (4x4 mm).","salesMarkdown":"On-chip peripherals include a 10-bit ADC with 8 channels, I²C and SPI serial interfaces, a PWM timer, and a watchdog timer with brown-out reset. This part is aimed at battery-powered or energy-harvesting applications where every microamp matters — think portable medical monitors, wireless sensor nodes, handheld instruments, and building-automation controllers. ## Memory and peripheral budget — what fits With 2 KB of Flash and 128 bytes of RAM, firmware must be tight. A typical I²C temperature sensor driver with a PID loop and UART debug output fits in about 1.2 KB of Flash, leaving room for a bootloader or calibration table. The 128-byte RAM ceiling means no large data buffers — plan for register-based or EEPROM-emulated storage. The 10-bit ADC resolves 3.3 V to about 3.2 mV per count, adequate for thermistor or potentiometer readout but not for precision load-cell measurements. Housed in a 16-pin QFN with an exposed thermal pad (4x4 mm body), this package demands a solid ground-plane connection under the pad. The datasheet recommends a 2x2 via array in the pad for thermal transfer — skip the vias and the junction temperature climbs quickly above 85°C ambient at continuous 10 mA I/O loads. All 10 GPIOs are 5 V tolerant on this variant, so level shifting is not needed when interfacing to 5 V logic or sensors.","metaTitle":"MSP430G2231IRSA16R 16-bit MCU, 16 MHz, 2 KB Flash, 16-QFN","metaDescription":"Texas Instruments MSP430G2231IRSA16R 16-bit MCU with 16 MHz CPU, 2 KB Flash, 128 B RAM, I²C/SPI, 10 GPIO, 8-ch 10-bit ADC, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"MSP430G2xx","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"16MHz","Series":"MSP430G2xx","Package":"Tape & Reel (TR); Cut Tape (CT)","RAM Size":"128 x 8","Core Size":"16-Bit","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, SPI","Mounting Type":"Surface Mount","Number of I/O":"10","Core Processor":"MSP430 CPU16","Package / Case":"16-VQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"MSP430G2231","Program Memory Size":"2KB (2K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"16-QFN (4x4)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0900","priceTiers":[{"qty":1,"price":"$2.09000","currency":"USD"},{"qty":10,"price":"$1.87600","currency":"USD"},{"qty":25,"price":"$1.77000","currency":"USD"},{"qty":100,"price":"$1.50800","currency":"USD"},{"qty":250,"price":"$1.41600","currency":"USD"},{"qty":500,"price":"$1.23900","currency":"USD"},{"qty":1000,"price":"$1.02660","currency":"USD"},{"qty":3000,"price":"$0.95580","currency":"USD"},{"qty":6000,"price":"$0.92040","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/19e87b604a23562635d608f69a2d6544.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MSP430G2231IRSA16R/alternatives.json"},"ai":{"faq":[{"question":"What is the MSP430G2231IRSA16R equivalent part?","answer":"The F280041PZQR from TI's C2000 family is a 32-bit MCU with a different core and package — not a functional equivalent for this MSP430 part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430G2231IRSA16R","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430G2231IRSA16R 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}}