{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L021D4P7TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L021D4P7TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L021D4P7TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L021D4P7TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L021D4P7TR, ARM Cortex-M0+ 32-bit MCU, 32 MHz, 16 KB Flash, 2 KB RAM, 512 B EEPROM, 14-TSSOP, -40 to 105°C.","salesMarkdown":"The STM32L021D4P7TR is a 32-bit ARM Cortex-M0+ MCU from STMicroelectronics, running at 32 MHz and packing 16 KB of Flash, 2 KB of RAM, and 512 bytes of EEPROM in a 14-TSSOP package. ## Memory and peripheral budget — sized for a single control loop or sensor interface With 16 KB of program Flash and 2 KB of RAM, this MCU is not meant for a GUI stack or a complex RTOS — it's sized for a single control loop, a Modbus RTU slave, or a sensor hub that reads one or two analog inputs and drives a PWM output. The 11 available GPIOs, combined with I²C, SPI, and UART connectivity, are enough to talk to a radio module, an ADC, and a few discrete sensors.","metaTitle":"ST STM32L021D4P7TR ARM Cortex-M0+ MCU, 32 MHz, 14-TSSOP","metaDescription":"STMicroelectronics STM32L021D4P7TR 32-bit MCU, 32 MHz, 16 KB Flash, 2 KB RAM, 512 B EEPROM, -40 to 105°C, 14-TSSOP. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"32MHz","Series":"STM32L0","Package":"Tape & Reel (TR)","RAM Size":"2K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"512 x 8","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"11","Core Processor":"ARM® Cortex®-M0+","Package / Case":"14-TSSOP (0.173\\\", 4.40mm Width)","Product Status":"Active","Data Converters":"A/D 4x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L021","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"14-TSSOP","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2514","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/38f4913da5f8c5ecbeb2975af23dcaa9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L021D4P7TR/alternatives.json"},"ai":{"faq":[{"question":"What is STM32L021D4P7TR's listed speed?","answer":"The core runs at 32 MHz, which is the maximum clock speed for this ARM Cortex-M0+ implementation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L021D4P7TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L021D4P7TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T18:12:59.411Z","lastPublished":"2026-07-11T18:12:59.411Z","indexable":true}}