{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L4R9ZGT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L4R9ZGT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L4R9ZGT6","factsUrl":"https://icboms.com/api/mcp/products/STM32L4R9ZGT6","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32L4R9ZGT6, ARM Cortex-M4 32-bit MCU, 120MHz, 1MB Flash, 640KB SRAM, 112 I/O, 1.71V-3.6V, -40°C to 85°C, 144-LQFP.","salesMarkdown":"The STM32L4R9ZGT6 is a 32-bit ARM Cortex-M4 microcontroller from STMicroelectronics, clocked at 120 MHz with 1 MB of Flash and 640 KB of SRAM. It sits in the STM32L4R series, ST's ultra-low-power line aimed at applications where active processing and standby current both matter — think battery-operated instrumentation, portable medical devices, or an HMI panel that needs to stay responsive while sipping power. The 112 I/O in a 144-LQFP package give it enough pinout for a parallel LCD interface plus a sensor array and a CANbus gateway without multiplexing. ## Memory and peripheral budget 1 MB of Flash is enough for a moderate GUI stack with a real-time OS kernel and application code. The 640 KB SRAM handles frame buffers for a small TFT display without external memory. The 16-channel 12-bit ADC and dual 12-bit DAC cover analog front-end tasks like battery monitoring or sensor conditioning. Brown-out detect and POR are integrated, so external supervisory circuits are optional. The STM32L4R9ZGT6 is classified as end-of-life (EOL) by the manufacturer.","metaTitle":"ST STM32L4R9ZGT6 ARM Cortex-M4 MCU, 120MHz, 1MB Flash","metaDescription":"STM32L4R9ZGT6 32-bit MCU with 120MHz ARM Cortex-M4, 1MB Flash, 640KB SRAM, 112 I/O, 144-LQFP. Sourced to order against RFQ. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"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":"1MB (1M 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":"$16.6700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/3911b6923e911f78d930b1bab40f9562.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L4R9ZGT6/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32L4R9ZGT6 in this component family?","answer":"ST's recommended migration path for the STM32L4R9 series is to a current-production STM32U5 or STM32L5 series device. Pin compatibility varies by specific package and feature set; verify the target part's datasheet against your PCB layout before committing a change."},{"question":"What is STM32L4R9ZGT6's listed speed?","answer":"The core runs at 120 MHz, which is the maximum clock frequency for the ARM Cortex-M4 in this device."},{"question":"What is STM32L4R9ZGT6's listed series?","answer":"This part belongs to the STM32L4R series, ST's ultra-low-power line based on the ARM Cortex-M4 core."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L4R9ZGT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L4R9ZGT6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}