{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L422RBT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L422RBT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L422RBT6","factsUrl":"https://icboms.com/api/mcp/products/STM32L422RBT6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L422RBT6, STM32L4 series, 32-bit ARM Cortex-M4 MCU, 80 MHz, 128 KB Flash, 40K x 8 RAM, 52 I/O, 1.71 V to 3.6 V, -40°C to 85°C, 64-LQFP.","salesMarkdown":"The 80 MHz core with single-precision FPU handles real-time math like FFT or sensor fusion without a separate DSP. Compare this to the older STM32L151CBU6A, which runs a Cortex-M3 at 32 MHz — the STM32L422RBT6 gives you over 2× the clock speed and hardware floating-point, so algorithm-heavy loops finish sooner and the core can spend more time in sleep mode. The 40K x 8 SRAM is enough for a FreeRTOS heap with a few moderate buffers; if you need more, the Quad SPI interface can memory-map an external PSRAM or serial Flash. ## Active lifecycle — no LTB scramble needed The STM32L4 series has broad second-source and roadmap continuity within the family, so if you later need more memory or a smaller package, pin-compatible siblings exist. ## Package and layout — 64-LQFP, no hidden surprises The 64-LQFP (10×10 mm) is a common, hand-solderable footprint. The supplier device package is 64-LQFP (10x10). Surface-mount only. No exposed pad underneath, so you don't need thermal vias — just standard 0.5 mm pitch layout. Decouple the VDD pins with 100 nF ceramics close to each pair; a single 4.7 µF bulk cap per supply rail is enough for most designs.","metaTitle":"ST STM32L422RBT6 ARM Cortex-M4 MCU, 80 MHz, 128 KB Flash","metaDescription":"STMicroelectronics STM32L422RBT6 32-bit MCU with ARM Cortex-M4 core at 80 MHz, 128 KB Flash, 40K x 8 RAM, 52 I/O, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"STM32L4","packageCase":null,"mountingType":null,"rohsStatus":null,"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":"52","Core Processor":"ARM® Cortex®-M4","Package / Case":"64-LQFP","Product Status":"Active","Data Converters":"A/D 16x12b","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":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.8300","priceTiers":[{"qty":1,"price":"$6.83000","currency":"USD"},{"qty":10,"price":"$6.13800","currency":"USD"},{"qty":25,"price":"$5.80280","currency":"USD"},{"qty":160,"price":"$5.02894","currency":"USD"},{"qty":320,"price":"$4.77106","currency":"USD"},{"qty":480,"price":"$4.28106","currency":"USD"},{"qty":960,"price":"$3.61053","currency":"USD"},{"qty":2400,"price":"$3.51675","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/08b18385ba7b503452c1da6901f4845f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L422RBT6/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM32L422RBT6 and STM32L432RBT6?","answer":"The STM32L432RBT6 is a higher-end sibling in the same STM32L4 series, typically offering more Flash (256 KB vs 128 KB) and a different peripheral set. The STM32L422RBT6 is a cost-optimized, lower-memory variant. Both share the same Cortex-M4 core and 80 MHz clock, so code migration is straightforward if you stay within the Flash and RAM budget."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L422RBT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L422RBT6 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}}