{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L443CCY6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L443CCY6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L443CCY6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L443CCY6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series, ARM® Cortex®-M4 32-Bit MCU, 80 MHz, 256KB Flash, 64K x 8 RAM, 1.71V-3.6V, 49-UFBGA WLCSP, -40°C to 85°C.","salesMarkdown":"## 80 MHz Cortex-M4 with FPU — sensor-fusion headroom in a WLCSP footprint The STM32L443CCY6TR: Peripheral set includes CAN, USB, QSPI, SAI, and multiple I²C/SPI/UART channels. The 49-WLCSP package (3.14 x 3.13 mm) is the tightest footprint in the STM32L4 family. ## 256 KB Flash / 64 KB SRAM — sizing the firmware and OTA staging area The 256 KB of Flash is split into 2 KB and 64 KB erase sectors. The 64 KB SRAM is single-cycle access at 80 MHz. ## 49-WLCSP — layout and reflow notes for the 3.14 x 3.13 mm package The 49-ball WLCSP (0.4 mm pitch) demands a controlled reflow profile and a solder mask defined pad. The datasheet recommends a 0.25 mm diameter NSMD pad with a 0.3 mm solder mask opening. Keep the copper pour under the BGA area solid — no breakout traces between balls — and use a 0.1 mm stencil. The package is MSL 3; bake at 125 °C for 48 hours if the moisture barrier bag has been open longer than the floor life. No end-of-life notification has been issued. For production planning, the base number STM32L443 covers multiple Flash and package variants.","metaTitle":"STM32L443CCY6TR STM32L4 MCU, ARM Cortex-M4, 80 MHz","metaDescription":"STM32L443CCY6TR 32-bit ARM Cortex-M4 MCU, 80 MHz, 256 KB Flash, 64 KB SRAM, 1.71-3.6 V, -40 to 85 °C, 49-WLCSP. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"STM32L4","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"80MHz","Series":"STM32L4","Package":"Tape & Reel (TR) Cut Tape (CT)","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, LCD, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"39","Core Processor":"ARM® Cortex®-M4","Package / Case":"49-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 10x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L443","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"49-WLCSP (3.14x3.13)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.0800","priceTiers":[{"qty":1,"price":"$6.08000","currency":"USD"},{"qty":10,"price":"$5.49300","currency":"USD"},{"qty":25,"price":"$5.23720","currency":"USD"},{"qty":100,"price":"$4.54740","currency":"USD"},{"qty":250,"price":"$4.34296","currency":"USD"},{"qty":500,"price":"$3.95978","currency":"USD"},{"qty":1000,"price":"$3.44884","currency":"USD"},{"qty":2500,"price":"$3.32110","currency":"USD"},{"qty":5000,"price":"$3.19337","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/95850be2029da0766935bf1246526e77.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L443CCY6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the equivalent of STM32L443CCY6TR?","answer":"The STM32L151CBU6A is a lower-performance sibling in the STM32L1 series — it runs a Cortex-M3 at 32 MHz with 128 KB Flash, lacks the FPU and DSP extensions, and has fewer connectivity options (no CAN, QSPI, or SAI). It is not a pin-compatible drop-in; the WLCSP footprint and ball map differ. For a true functional second-source within the STM32L4 family, consider the STM32L433CCY6TR (same Flash/RAM, no LCD) or the STM32L452CCY6TR (512 KB Flash, same package)."},{"question":"What is the lead time for STM32L443CCY6TR?","answer":"Submit an RFQ for current availability and delivery schedule."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L443CCY6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L443CCY6TR 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}}