{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8L101F3U6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8L101F3U6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8L101F3U6TR","factsUrl":"https://icboms.com/api/mcp/products/STM8L101F3U6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8L101F3U6TR, STM8L EnergyLite series, 8-bit MCU, 16 MHz, 8 KB Flash, 1.5 KB RAM, 2 KB EEPROM, 1.65-3.6 V supply, -40 to 85°C, 20-UFQFPN (3x3 mm).","salesMarkdown":"## STM8L101F3U6TR — 8-bit MCU for low-power control The STMicroelectronics STM8L101F3U6TR is an 8-bit microcontroller from the STM8L EnergyLite series, built around the STM8 core and clocked at 16 MHz. On-chip peripherals include I²C, SPI, UART/USART, PWM, and an infrared encoder, all in a compact 20-UFQFPN (3x3 mm) package. ## Memory budget — what fits in 8 KB Flash and 1.5 KB RAM With 8 KB of Flash and 1.5 KB of RAM, this part is sized for a single-threaded control application — think a thermostat firmware, a pulse counter with Modbus framing, or a keypad scanner with LED PWM. The 2 KB EEPROM is a genuine advantage: it saves a separate serial EEPROM footprint and cost for calibration coefficients, serial numbers, or configuration tables. If your firmware image or runtime heap exceeds these numbers, you are looking at the STM8L101F2U6TR (4 KB Flash, 1 KB RAM) or stepping up to the STM8L151 series with larger memory options. ## Supply and power — single-cell battery ready For precision timing or USB applications, an external clock source can be fed in through the available oscillator pins. ## Package and footprint — 20-UFQFPN 3x3 mm The 20-UFQFPN (3x3 mm) package is a fine-pitch QFN with an exposed pad. The pad should be stitched to ground with several vias for thermal and electrical continuity. The 18 I/O lines give enough headroom for a small keypad, a character LCD, and one or two serial buses. ## Temperature grade — industrial range It does not carry an AEC-Q100 automotive grade — for under-hood or 125°C environments, look at the STM8A series. The -40°C low end is fine for cold storage or outdoor sensor nodes in temperate climates. For dual-sourcing resilience, the STM8L101F3U6TR is pin-compatible with the STM8L101F2U6TR (4 KB Flash, 1 KB RAM) — the same package and pinout, just less memory. If your firmware fits in the smaller memory, the F2 variant is a valid second source for the same board.","metaTitle":"STM8L101F3U6TR STM8 8-bit MCU, 16 MHz, 8 KB Flash, 20-UFQFPN","metaDescription":"STMicroelectronics STM8L101F3U6TR 8-bit MCU, 16 MHz core, 8 KB Flash, 1.5 KB RAM, 2 KB EEPROM, 1.65-3.6 V supply, -40 to 85°C, 20-UFQFPN.","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) Cut Tape (CT)","RAM Size":"1.5K x 8","Core Size":"8-Bit","EEPROM Size":"2K x 8","Peripherals":"Infrared, POR, PWM, WDT","Connectivity":"I²C, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"18","Core Processor":"STM8","Package / Case":"20-UFQFN","Product Status":"Active","Data Converters":"-","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"8KB (8K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-UFQFPN (3x3)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c575074f8f2dd9684cfa819dce3a3ab7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8L101F3U6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM8L101F3U6TR and STM8L101F2U6TR?","answer":"The STM8L101F3U6TR has 8 KB Flash and 1.5 KB RAM, while the STM8L101F2U6TR has 4 KB Flash and 1 KB RAM. Both share the same 20-UFQFPN package, pinout, and peripheral set. The F3 is the higher-density variant; if your firmware fits in 4 KB, the F2 is a drop-in second source."},{"question":"What package does the STM8L101F3U6TR come in?","answer":"It is supplied in a 20-UFQFPN (3x3 mm) package, a fine-pitch QFN with an exposed thermal pad. The mounting type is surface mount."},{"question":"Is the STM8L101F3U6TR RoHS compliant?","answer":"RoHS compliance is standard for ST's STM8L series in this package. The part number suffix does not indicate a lead-free exception, and the series is generally RoHS-compliant. Confirm with the datasheet or your compliance team for the specific date code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8L101F3U6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8L101F3U6TR 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}}