{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L081CZT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L081CZT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L081CZT6","factsUrl":"https://icboms.com/api/mcp/products/STM32L081CZT6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series, STM32L081CZT6, 32-bit ARM Cortex-M0+ MCU, 32 MHz, 192 KB Flash, 20K x 8 RAM, 6K x 8 EEPROM, 1.65 V to 3.6 V supply, 40 I/O, 48-LQFP, -40°C to 85°C.","salesMarkdown":"## 32 MHz Cortex-M0+ with on-chip EEPROM — the low-power BOM anchor It carries 192 KB of Flash program memory, 20 KB of SRAM, and a separate 6 KB EEPROM array that survives 100k write cycles — enough to store calibration constants or configuration data without an external serial EEPROM. This is the part you pick when the board needs to sip microamps in stop mode and still wake to handle I²C or SPI traffic. ## 192 KB Flash, 20 KB RAM, 6 KB EEPROM — memory fit for a field-upgradable node Program memory at 192 KB (192K x 8) covers moderate firmware loads — a Bluetooth stack, a Modbus RTU slave, or a sensor-fusion algorithm. The 20 KB SRAM is tight for heavy buffering; if your application queues large ADC logs or runs a TCP/IP stack, budget for external RAM or step to the STM32L4 series. The 6 KB EEPROM is the standout: it eliminates a separate memory IC and simplifies the BOM for applications that need non-volatile parameter storage without wear-leveling in Flash. For battery-powered designs, this supply flexibility saves a regulator and its quiescent current. STMicroelectronics lists the STM32L081CZT6 as Active. For supply-chain planning, the base product number STM32L081 is the reference for PCN and EOL notifications; ST typically gives 12–18 months notice before any discontinuation. ## 48-LQFP — rework-friendly, but watch the thermal mass The leadframe has moderate thermal mass; a standard hot-air profile at 320°C with a fine nozzle lifts the part cleanly without lifting pads. MSL 3 out of the bag: bake at 125°C for 24 hours if the moisture barrier bag has been open longer than the floor-life window. The 48-LQFP footprint is common across the STM32L0 series, so a board layout can accept multiple Flash-density variants without a respin.","metaTitle":"STM32L081CZT6 STM32L0 MCU, 32 MHz Cortex-M0+, 192 KB Flash","metaDescription":"STMicroelectronics STM32L081CZT6 32-bit ARM Cortex-M0+ MCU, 32 MHz, 192 KB Flash, 20 KB RAM, 6 KB EEPROM, 1.65-3.6 V, -40 to 85°C, 48-LQFP. Active lifecycle.","metaKeywords":null},"attributes":{"series":"STM32L0","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"32MHz","Series":"STM32L0","Package":"Tray","RAM Size":"20K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"6K x 8","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"40","Core Processor":"ARM® Cortex®-M0+","Package / Case":"48-LQFP","Product Status":"Active","Data Converters":"A/D 13x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L081","Program Memory Size":"192KB (192K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.5500","priceTiers":[{"qty":1,"price":"$5.55000","currency":"USD"},{"qty":10,"price":"$4.98100","currency":"USD"},{"qty":25,"price":"$4.70880","currency":"USD"},{"qty":80,"price":"$4.08075","currency":"USD"},{"qty":230,"price":"$3.87152","currency":"USD"},{"qty":440,"price":"$3.47391","currency":"USD"},{"qty":1500,"price":"$2.92981","currency":"USD"},{"qty":3000,"price":"$2.78332","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8143764d90fbf45beb08d071cbbf1b30.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L081CZT6/alternatives.json"},"ai":{"faq":[{"question":"What is an equivalent or replacement for STM32L081CZT6?","answer":"A functional peer is the STM32L151CBU6A, which runs a Cortex-M3 core at 32 MHz and adds USB connectivity plus two 12-bit DACs. It is not pin-compatible (different package), but it offers a similar peripheral set with a more capable core and more ADC channels (16 vs 13). For a drop-in footprint match within the STM32L0 series, look at the STM32L071CZT6 (same 48-LQFP, 192 KB Flash, no EEPROM) or the STM32L073CZT6 (adds USB and LCD driver)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L081CZT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L081CZT6 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}}