{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8L151G4Y6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8L151G4Y6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8L151G4Y6TR","factsUrl":"https://icboms.com/api/mcp/products/STM8L151G4Y6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8L151G4Y6TR, 8-bit STM8 core MCU from the STM8L EnergyLite series, 16MHz, 32KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 12-bit ADC/DAC, 26 I/O, 28-WLCSP, -40°C to 85°C.","salesMarkdown":"## 16 MHz STM8 core in a 1.7x2.84 mm WLCSP — the space-constrained, battery-conscious choice The STMicroelectronics STM8L151G4Y6TR is an 8-bit microcontroller from the STM8L EnergyLite family, built around a 16 MHz STM8 core. This is the part to reach for when board area is the tightest constraint and every microamp of sleep current matters — the EnergyLite architecture is ST's dedicated ultra-low-power play, not a general-purpose core with a low-power mode tacked on. The internal oscillator trims the external crystal from the BOM for many applications, though the 16 MHz PLL still needs a clean supply rail for accurate timing. The 1 KB EEPROM provides 100k-cycle endurance for calibration constants or configuration parameters without wearing the main Flash. ## WLCSP package — footprint, assembly, and rework considerations The footprint is tiny, but the trade-off is that the package is essentially the die size — no room for routing escape traces between balls on a standard 2-layer board. Plan for at least a 4-layer PCB with microvias or via-in-pad to fan out the 26 I/O and supply balls. The MSL rating is typically MSL 1 for WLCSP, but verify the reel label before the bake decision. Reballing a WLCSP in rework is not practical; treat a bad solder joint as a board-level scrap event. The STM8L family has broad second-source compatibility within the series — pin-compatible siblings with different Flash/RAM sizes share the same footprint, giving a density upgrade path without a PCB change.","metaTitle":"STM8L151G4Y6TR 8-bit MCU, 16MHz, 32KB Flash","metaDescription":"STMicroelectronics STM8L151G4Y6TR 8-bit MCU, 16MHz core, 32KB Flash, 2KB RAM, 1KB EEPROM, 12-bit ADC/DAC, 28-WLCSP, -40 to 85°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"16MHz","Series":"STM8L EnergyLite","Package":"Tape & Reel (TR)","RAM Size":"2K x 8","Core Size":"8-Bit","EEPROM Size":"1K x 8","Peripherals":"Brown-out Detect/Reset, DMA, IR, POR, PWM, WDT","Connectivity":"I²C, IrDA, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"26","Core Processor":"STM8","Package / Case":"28-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 18x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"28-WLCSP (1.7x2.84)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3305","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a6a751855e41d176288c66669f17dd61.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8L151G4Y6TR/alternatives.json"},"ai":{"faq":[{"question":"Can STM8L151G4Y6TR be programmed with ST-Link?","answer":"Yes. The STM8L151G4Y6TR uses the standard STM8 SWIM (Single Wire Interface Module) debug protocol, which is supported by all ST-Link programmers and debuggers. The SWIM interface uses the SWIM pin (typically connected to the ST-Link's SWIM output) and a reset pin. No special adapter is needed beyond a standard ST-Link/V2 or the integrated ST-Link on STM8 discovery boards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8L151G4Y6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8L151G4Y6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}