{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MSP430G2121IPW14","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"MSP430G2121IPW14","canonicalUrl":"https://icboms.com/texas-instruments/MSP430G2121IPW14","factsUrl":"https://icboms.com/api/mcp/products/MSP430G2121IPW14","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments MSP430G2xx series 16-bit MCU, MSP430G2121IPW14, 16MHz, 1KB Flash, 128 x 8 RAM, 14-TSSOP, Tube.","salesMarkdown":"## 16MHz MSP430 core with 1KB flash — what the memory budget means for the BOM The MSP430G2121IPW14 is a 16-bit MCU from TI's MSP430G2xx value line, clocked at 16 MHz with 1 KB of on-chip flash and 128 bytes of RAM. That memory ceiling defines the firmware scope: a simple sensor poll-and-transmit loop, a single control-law state machine, or a small bootloader fit within 1 KB, but a protocol stack or data logger will overflow it. The 128 x 8 RAM (128 bytes) is the active variable and stack space — enough for a few 16-bit counters and a small buffer, but tight for any buffered I/O or multi-layer function calls. Budget the stack depth during interrupt service routines; a deep call tree will push past the limit. ## Supply range and temperature grade — deployment envelope For applications needing precise timing or a lower-power sleep clock, an external 32 kHz watch crystal can be connected to the dedicated LFXT1 pins (not all pins are brought out on the 14-pin package — verify the pinout against the application note). ## On-chip peripherals and I/O — what is included and what is not The integrated peripheral set includes brown-out detect (BOD), power-on reset (POR), a PWM timer, and a watchdog timer (WDT). These reduce external supervisory ICs and reset generators — the BOD monitors the supply rail and holds the MCU in reset below the threshold, which is critical for battery-powered designs where the voltage sags under load. Connectivity is limited to I²C and SPI via the universal serial interface (USI) module — no UART, no CAN, no LIN. The 10 GPIOs (on the 14-TSSOP package) must serve all external interfaces: if the design needs a UART, it must be bit-banged on two GPIOs, consuming pins and CPU cycles. Verify the BOM pin count against the 10 available I/O before committing the layout. ## Package and board-fit — 14-TSSOP footprint The 0.65 mm pitch is manageable on a two-layer board with proper trace width/spacing — no need for a four-layer stack-up just for fan-out. The supplier device package is 14-TSSOP; the footprint matches the standard JEDEC MO-153 variation. The part is ROHS3 compliant (EU 2015/863), which covers the full ten restricted substances including the four phthalates.","metaTitle":"Texas Instruments MSP430G2121IPW14 MCU, 16MHz, 1KB Flash","metaDescription":"Texas Instruments MSP430G2121IPW14 16-bit MCU, 16MHz, 1KB Flash, 128B RAM, 14-TSSOP. Active production, ROHS3. Quoted to order.","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":"Tube","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":"14-TSSOP (0.173\\\", 4.40mm Width)","Product Status":"Active","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"MSP430G2121","Program Memory Size":"1KB (1K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"14-TSSOP","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8900","priceTiers":[{"qty":1,"price":"$1.89000","currency":"USD"},{"qty":10,"price":"$1.69500","currency":"USD"},{"qty":25,"price":"$1.59920","currency":"USD"},{"qty":100,"price":"$1.36230","currency":"USD"},{"qty":250,"price":"$1.27920","currency":"USD"},{"qty":500,"price":"$1.11930","currency":"USD"},{"qty":1000,"price":"$0.92742","currency":"USD"},{"qty":2500,"price":"$0.86346","currency":"USD"},{"qty":5000,"price":"$0.83148","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/dcffd4e87ef2e9a7c45ca4c675b25e04.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MSP430G2121IPW14/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible upgrade with more memory or an ADC?","answer":"The MSP430G2132IPW14R is a direct pin-compatible sibling in the same 14-TSSOP package, same 16 MHz core, same 10 GPIOs — but adds 8 KB flash, 256 bytes RAM, and an 8-channel 10-bit ADC. If the BOM needs analog input capability or more code space, that part drops into the same footprint without a board spin."},{"question":"Does MSP430G2121IPW14 include an analog-to-digital converter?","answer":"No. This variant has no ADC on-chip. The MSP430G2132 (same package) adds a 10-bit ADC if analog sampling is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/MSP430G2121IPW14","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/MSP430G2121IPW14 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}}