{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8L151K4U6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8L151K4U6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8L151K4U6TR","factsUrl":"https://icboms.com/api/mcp/products/STM8L151K4U6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8L151K4U6TR, STM8L EnergyLite series 8-bit MCU, 16 MHz, 16 KB Flash, 2 KB RAM, 1 KB EEPROM, 30 I/O, 12-bit ADC, 12-bit DAC, I²C, SPI, UART, 1.8V-3.6V, -40°C to 85°C, 32-UFQFPN.","salesMarkdown":"## What this 8-bit MCU brings to a low-power board The STMicroelectronics STM8L151K4U6TR is an 8-bit microcontroller from the STM8L EnergyLite family, built around the STM8 core and clocked at 16 MHz. ## Memory sizing — what fits and what doesn't With 16 KB of Flash and 2 KB of RAM, this MCU is sized for a single-purpose control task — a fan controller, a thermostat, a simple keypad reader, or a battery gauge that logs a few parameters. If your firmware needs a TCP/IP stack, a GUI library, or a large lookup table, you'll bump into the 16 KB ceiling fast; this part is not the one for a feature-rich application. The exposed thermal pad needs a good solder-void-free connection to the ground plane — the datasheet's recommended footprint and via pattern under the pad are worth following. The TR suffix means it ships in tape-and-reel, which is the standard for pick-and-place assembly. ## Peripherals and interfaces at a glance The STM8L151K4U6TR includes a brown-out reset, power-on reset, DMA controller, and a watchdog timer — the usual set for reliable standalone operation. The 30 general-purpose I/O pins give enough flexibility for a keypad matrix, a few LEDs, and a serial link to a host. An internal oscillator is on-chip, so no external crystal is required for basic operation, though the clock tree can accept an external source if tighter timing is needed.","metaTitle":"STM8L151K4U6TR 8-bit MCU, 16 MHz, 16 KB Flash, 2 KB RAM","metaDescription":"STM8L151K4U6TR 8-bit MCU from STMicroelectronics STM8L EnergyLite series. 16 MHz core, 16 KB Flash, 2 KB RAM, 1 KB EEPROM. Industrial temp -40°C to 85°C.","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":"30","Core Processor":"STM8","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 22x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3884","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a6a751855e41d176288c66669f17dd61.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8L151K4U6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the clock speed of STM8L151K4U6TR?","answer":"The STM8L151K4U6TR runs at 16 MHz. That is the maximum core clock; the internal oscillator can be used without an external crystal."},{"question":"How much RAM and EEPROM does STM8L151K4U6TR have?","answer":"It has 2 KB of RAM (organized as 2K x 8) and 1 KB of EEPROM (1K x 8). The EEPROM is separate from the 16 KB Flash program memory."},{"question":"What are the differences between STM8L151K4U6TR and STM8L151K4U6?","answer":"The suffix 'TR' indicates tape-and-reel packaging. The base part STM8L151K4U6 is functionally identical — same die, same memory, same speed. The only difference is the shipping medium: TR is for automated assembly lines; the non-TR variant typically comes in trays or tubes."},{"question":"Does STM8L151K4U6TR have an internal oscillator?","answer":"Yes, it has an internal oscillator. The oscillator type is listed as Internal, so the MCU can run without an external crystal for basic operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8L151K4U6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8L151K4U6TR 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}}