{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32G031J6M6U","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32G031J6M6U","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32G031J6M6U","factsUrl":"https://icboms.com/api/mcp/products/STM32G031J6M6U","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32G0 series, STM32G031J6M6U, 32-bit ARM Cortex-M0+ MCU, 64 MHz, 32 KB Flash, 8K x 8 RAM, 6 I/O, 1.7V to 3.6V, -40 to 85°C, 8-SOIC package.","salesMarkdown":"## What this 8-pin MCU brings to a space-constrained BOM Its six I/O lines and 8-SOIC footprint target single-function controllers where board area is the primary constraint — think sensor hubs, relay drivers, or simple motor commutation loops that don't need the pin count of a larger TQFP. ## 64 MHz on a Cortex-M0+ — enough for a single-loop controller At 64 MHz the Cortex-M0+ delivers about 0.95 DMIPS/MHz, so you get roughly 60 DMIPS of integer throughput. That is enough for a single PID loop running at 10–20 kHz, a UART/SPI bridge, or a timed PWM waveform. The flash needs zero wait states up to 32 MHz; beyond that the prefetch buffer and ART accelerator keep single-cycle execution on linear code, so the headline 64 MHz is real for straight-line routines. 32 KB of program Flash and 8 KB of SRAM set a hard ceiling on firmware complexity. A bootloader, a main control loop, and a communication stack (I²C or UART) typically fit in 16–20 KB, leaving room for calibration tables or lookup curves. The 8 KB RAM handles a couple of moderate-sized buffers — for example a 1 KB UART FIFO and a 2 KB ADC sample ring — before running tight. ## 6 I/O in an 8-SOIC — counting the pins The 8-SOIC package yields six usable GPIO pins after power and ground. That is enough for one serial interface (I²C or UART) plus two or three digital inputs or PWM outputs. If you need two serial ports or more than four general-purpose I/O, the same MCU core in a 16-pin or 20-pin package is the natural step-up. The 8-pin variant is the right choice when the entire system fits on a 10 mm × 10 mm board. ## Peripherals on tap: ADC, timers, and serial interfaces There is no USB or CAN controller on this die — the G031 series omits those blocks, so if you need USB connectivity you are looking at the STM32G071 or a different family. The ADC is real: eight external channels, 12-bit resolution, sampling rate around 1 MSps depending on clock configuration. ## Industrial temperature range and active lifecycle For dual-source resilience, the STM32G031K6 (20-pin TSSOP) is software-compatible but not pin-compatible; the 8-pin package has no pin-for-pin second source outside the STM32G0 family.","metaTitle":"STM32G031J6M6U MCU, 32-bit Cortex-M0+, 64 MHz, 32 KB Flash","metaDescription":"STM32G031J6M6U 32-bit ARM Cortex-M0+ MCU from ST. 64 MHz core, 32 KB Flash, 8 KB RAM, 6 I/O in 8-SOIC. Active lifecycle, industrial temp -40 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":"64MHz","Series":"STM32G0","Package":"Tray","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, SmartCard, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"6","Core Processor":"ARM® Cortex®-M0+","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","Data Converters":"A/D 8x12b SAR","Oscillator Type":"External, Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32G031","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-SOIC","Voltage - Supply (Vcc/Vdd)":"1.7V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9c76df672453926eff65e748ce93d981.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32G031J6M6U/alternatives.json"},"ai":{"faq":[{"question":"Does STM32G031J6M6U have an ADC?","answer":"Yes, it integrates a 12-bit SAR ADC with eight multiplexed channels. The ADC is a standard peripheral on this MCU and is available on the 6 I/O pins."},{"question":"Does STM32G031J6M6U have USB connectivity?","answer":"No. The STM32G031 series does not include a USB controller."},{"question":"What is the difference between STM32G031J6M6U and STM32G031K6?","answer":"The STM32G031K6 is a 20-pin TSSOP variant with 19 I/O, compared to the 8-pin SOIC with 6 I/O on the J6M6U. Both share the same Cortex-M0+ core at 64 MHz and the same 32 KB Flash / 8 KB RAM. The K6 adds more GPIO and a second serial interface, but the die and firmware are compatible — code written for one can be recompiled for the other with pin-mapping changes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32G031J6M6U","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32G031J6M6U when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}