{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L021G4U6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L021G4U6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L021G4U6","factsUrl":"https://icboms.com/api/mcp/products/STM32L021G4U6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series, ARM® Cortex®-M0+ 32-bit MCU, 32MHz, 16KB Flash, 2K x 8 SRAM, 512 x 8 EEPROM, 1.65V-3.6V, -40°C to 85°C, 28-UFQFPN (4x4), 24 I/O.","salesMarkdown":"## ARM Cortex-M0+ at 32 MHz — the low-power sweet spot The STM32L021G4U6: 16 KB Flash, 2 KB SRAM, and 512 bytes EEPROM on-chip. ## Peripheral set and I/O — 24 pins, 10-channel 12-bit ADC 24 I/O lines in a 28-UFQFPN (4x4 mm) package. 10-channel 12-bit ADC on board. STMicroelectronics lists the STM32L021G4U6 as Active.","metaTitle":"ST STM32L021G4U6 ARM Cortex-M0+ MCU, 32MHz, 16KB Flash","metaDescription":"STMicroelectronics STM32L021G4U6 32-bit MCU, ARM Cortex-M0+ core at 32MHz, 16KB Flash, 2KB SRAM, 512B EEPROM. 1.65V-3.6V supply, -40°C to 85°C.","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":"Tray","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":"24","Core Processor":"ARM® Cortex®-M0+","Package / Case":"28-UFQFN","Product Status":"Active","Data Converters":"A/D 10x12b","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~85°C(TA)","Supplier Device Package":"28-UFQFPN (4x4)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6058","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/38f4913da5f8c5ecbeb2975af23dcaa9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can STM32L021G4U6 be programmed using standard ARM toolchains?","answer":"Yes. The ARM Cortex-M0+ core is supported by all major ARM toolchains — Keil MDK, IAR EWARM, GCC (ARM Embedded), and STM32CubeIDE. Programming and debug use the standard SWD interface."},{"question":"What is the maximum operating frequency of STM32L021G4U6?","answer":"The listed maximum speed is 32 MHz. This is the core clock ceiling; the PLL and flash wait states must be configured correctly when approaching it."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L021G4U6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L021G4U6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:35:36.898Z","lastPublished":"2026-07-16T12:35:36.898Z","indexable":true}}