{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MKL03Z32VFK4","brand":"NXP USA Inc.","brandSlug":"nxp-usa-inc","productSlug":"MKL03Z32VFK4","canonicalUrl":"https://icboms.com/nxp-usa-inc/MKL03Z32VFK4","factsUrl":"https://icboms.com/api/mcp/products/MKL03Z32VFK4","rawCanonicalId":null},"summary":{"shortDescription":"NXP Kinetis KL03 series, ARM Cortex-M0+ 48MHz, 32KB Flash, 2KB RAM, 22 I/O, 7-channel 12-bit ADC, UART/SPI/I2C, 1.71–3.6V supply, -40 to 105°C, 24-QFN (4x4mm) exposed pad.","salesMarkdown":"## 48 MHz Cortex-M0+ with 32 KB Flash — what it fits The NXP MKL03Z32VFK4 is a 32-bit ARM Cortex-M0+ MCU from the Kinetis KL03 series, clocked at 48 MHz with 32 KB Flash and 2 KB RAM. It packs 22 general-purpose I/O, a 7-channel 12-bit ADC, and serial interfaces (I²C, SPI, UART/USART) into a 24-QFN exposed-pad package measuring 4x4 mm. The part is rated for -40 to 105 °C operation and runs from a 1.71 to 3.6 V supply, making it a fit for compact industrial sensor nodes, motor-control feedback loops, and outdoor telecom modules where board space is tight and the environment is not climate-controlled. ## 2 KB RAM — the real constraint The 2 KB RAM is the tightest resource on this MCU. It limits the size of communication buffers, stack depth, and data arrays. For a UART-based sensor node polling a few registers and sending a short packet, it is fine. For anything that needs a large lookup table, a TCP/IP stack, or multiple DMA buffers, you will overflow it. Plan the firmware around this ceiling from the start — or step up to a KL03 variant with more RAM if the application needs it. The -40 to 105 °C rating covers engine-bay, factory-floor, and outdoor enclosure deployments without a heatsink — as long as the exposed pad is soldered to a thermal via pattern on the PCB.","metaTitle":"NXP MKL03Z32VFK4 Kinetis KL03 MCU, ARM Cortex-M0+ 48MHz, 32KB Flash","metaDescription":"NXP MKL03Z32VFK4 32-bit MCU, ARM Cortex-M0+ at 48MHz, 32KB Flash, 2KB RAM, 22 I/O, 7-ch 12-bit ADC, -40 to 105°C, 24-QFN. Active, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":"Kinetis KL03","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"48MHz","title":"MKL03Z32VFK4","Series":"Kinetis KL03","Package":"Tray","RAM Size":"2K x 8","Core Size":"32-Bit Single-Core","Peripherals":"Brown-out Detect/Reset, LVD, POR, PWM, WDT","description":"IC MCU 32BIT 32KB FLASH 24QFN","Connectivity":"I²C, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"22","Core Processor":"ARM® Cortex®-M0+","Package / Case":"24-VFQFN Exposed Pad","Data Converters":"A/D 7x12b","Oscillator Type":"Internal","Base Product Number":"MKL03Z32","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 105°C (TA)","Supplier Device Package":"24-QFN (4x4)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.3100","priceTiers":[{"qty":1,"price":"$3.31000","currency":"USD"},{"qty":10,"price":"$2.58700","currency":"USD"},{"qty":80,"price":"$2.07925","currency":"USD"},{"qty":490,"price":"$1.96453","currency":"USD"},{"qty":980,"price":"$1.62776","currency":"USD"},{"qty":2450,"price":"$1.51550","currency":"USD"},{"qty":4900,"price":"$1.45937","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1e83bf0c315dcc047165f618ce387ae1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MKL03Z32VFK4/alternatives.json"},"ai":{"faq":[{"question":"What is the MKL03Z32VFK4's core speed?","answer":"The MKL03Z32VFK4 runs at 48 MHz on an ARM Cortex-M0+ core."},{"question":"What compliance documentation does NXP provide for MKL03Z32VFK4?","answer":"The MKL03Z32VFK4 is ROHS3 compliant; standard NXP compliance documentation (RoHS, REACH) is available for this part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp-usa-inc/MKL03Z32VFK4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp-usa-inc/MKL03Z32VFK4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T17:20:20.394Z","lastPublished":"2026-07-11T17:20:20.394Z","indexable":true}}