{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L4R9ZIT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L4R9ZIT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L4R9ZIT6","factsUrl":"https://icboms.com/api/mcp/products/STM32L4R9ZIT6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4R9ZIT6, ARM Cortex-M4 32-bit MCU, 120 MHz, 2 MB Flash, 640 KB SRAM, 112 I/O, 144-LQFP (20x20), -40 to 85 °C, 1.71-3.6 V.","salesMarkdown":"It carries 2 MB of Flash and 640 KB of SRAM, enough to run a graphical user interface stack, sensor fusion algorithms, or OTA update staging without external memory. The 144-LQFP package (20x20 mm) brings out 112 I/O pins, covering parallel display interfaces, external memory buses, and multiple serial peripherals. ## Memory and peripheral headroom With 2 MB of Flash and 640 KB of SRAM, this part sits in the high-density tier of the STM32L4 family. The 640 KB SRAM supports large frame buffers for LCD driving or multi-channel data logging. Internal oscillator is available, though a precision external crystal is typical for CAN or USB timing. It is ROHS3 compliant. No authorized-distributor stock level is implied — each lot is verified for date-code consistency and marking integrity before dispatch.","metaTitle":"STM32L4R9ZIT6 MCU, ARM Cortex-M4 120 MHz, 2 MB Flash","metaDescription":"STMicroelectronics STM32L4R9ZIT6 32-bit MCU with 120 MHz ARM Cortex-M4, 2 MB Flash, 640 KB SRAM, 112 I/O, 144-LQFP. Active, industrial temp.","metaKeywords":null},"attributes":{"series":"STM32L4R","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"120MHz","Series":"STM32L4R","Package":"Tray","RAM Size":"640K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, SAI, SPI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"112","Core Processor":"ARM® Cortex®-M4","Package / Case":"144-LQFP","Product Status":"Active","Data Converters":"A/D 16x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L4R9","Program Memory Size":"2MB (2M x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"144-LQFP (20x20)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$18.7400","priceTiers":[{"qty":1,"price":"$18.74000","currency":"USD"},{"qty":10,"price":"$17.22200","currency":"USD"},{"qty":60,"price":"$16.50850","currency":"USD"},{"qty":120,"price":"$14.54542","currency":"USD"},{"qty":240,"price":"$13.83150","currency":"USD"},{"qty":480,"price":"$12.93915","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3911b6923e911f78d930b1bab40f9562.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L4R9ZIT6/alternatives.json"},"ai":{"faq":[{"question":"Does the STM32L4R9ZIT6 have a built-in LCD controller?","answer":"Yes, the peripheral list includes LCD support, indicating an integrated LCD controller capable of driving a segment LCD directly without an external driver chip."},{"question":"What is the closest functional second-source for the STM32L4R9ZIT6?","answer":"The STM32L151CBU6A from the STM32L1 series is a lower-performance sibling with a 32 MHz Cortex-M3 core, 37 I/O, and a smaller memory footprint. It is not a pin-compatible or direct replacement — the STM32L4R9ZIT6 offers 4x the clock speed, 2 MB Flash, 640 KB SRAM, and 112 I/O, making it a different tier for memory- and I/O-intensive designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L4R9ZIT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L4R9ZIT6 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}}