{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L422KBT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L422KBT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L422KBT6","factsUrl":"https://icboms.com/api/mcp/products/STM32L422KBT6","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32L4 series, ARM Cortex-M4, 32-Bit Single-Core, 80MHz, 128KB Flash, 40K x 8 RAM, 1.71V-3.6V, -40°C to 85°C, 32-LQFP (7x7), 26 I/O, Surface Mount.","salesMarkdown":"The STM32L422KBT6 is an STMicroelectronics STM32L4-series 32-bit microcontroller built around an ARM Cortex-M4 core running at 80 MHz. ## Memory and peripheral fit for sensor-node and motor-control designs The 128 KB Flash and 40 KB SRAM balance is sized for applications that run a lightweight RTOS, a communication stack (USB or LINbus), and a control algorithm without external memory. The Quad SPI interface on the connectivity block (I²C, SPI, Quad SPI, UART/USART, USB, LINbus, IrDA) allows attaching a serial Flash for data logging or OTA staging without consuming extra I/O. ## Supply-voltage flexibility and power-management angle For designs that need the full 80 MHz throughput, the Flash wait-state configuration must be set correctly during startup — a standard Cortex-M4 boot-sequence step that the reference firmware handles. ## Package and I/O constraints for layout planning The 32-LQFP (7x7 mm) body with 26 available I/O is the limiting factor for peripheral allocation. Each of the listed interfaces (I²C, SPI, Quad SPI, UART/USART, USB, LINbus) consumes multiple pins, so the design must prioritise which interfaces are active simultaneously. The 10-channel 12-bit ADC shares some of those I/O pads, so analog input count also competes for the same pin budget. Surface-mount assembly with MSL 3 handling is standard for this package profile.","metaTitle":"STM32L422KBT6 STM32L4 MCU, ARM Cortex-M4 80MHz, 128KB Flash","metaDescription":"STM32L422KBT6 32-bit MCU with ARM Cortex-M4 at 80MHz, 128KB Flash, 40Kx8 RAM, 1.71-3.6V supply, -40 to 85°C. Active lifecycle.","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":"Tray","RAM Size":"40K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, PWM, WDT","Connectivity":"I²C, Infrared, IrDA, LINbus, Quad SPI, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"26","Core Processor":"ARM® Cortex®-M4","Package / Case":"32-LQFP","Product Status":"Active","Data Converters":"A/D 10x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L422","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.9400","priceTiers":[{"qty":1,"price":"$4.94000","currency":"USD"},{"qty":10,"price":"$4.44000","currency":"USD"},{"qty":25,"price":"$4.19760","currency":"USD"},{"qty":80,"price":"$3.63788","currency":"USD"},{"qty":250,"price":"$3.45132","currency":"USD"},{"qty":500,"price":"$3.09684","currency":"USD"},{"qty":1000,"price":"$2.61180","currency":"USD"},{"qty":2500,"price":"$2.48121","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/08b18385ba7b503452c1da6901f4845f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L422KBT6/alternatives.json"},"ai":{"faq":[{"question":"What is the equivalent replacement for STM32L422KBT6?","answer":"The STM32L151CBU6A is a functional alternative from the STM32L1 series, but it uses an ARM Cortex-M3 core at 32 MHz with different memory and peripheral sizing. It is not a pin-compatible drop-in — the package, I/O count, and supply voltage differ. For a same-family second source within the STM32L4 series, check the STM32L422 base product number variants."},{"question":"What is STM32L422KBT6's listed speed?","answer":"The core runs at 80 MHz, which is the maximum clock frequency for the ARM Cortex-M4 processor in this device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L422KBT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L422KBT6 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}}