{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"R5F51405BDFK#30","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"R5F51405BDFK30","canonicalUrl":"https://icboms.com/renesas/R5F51405BDFK30","factsUrl":"https://icboms.com/api/mcp/products/R5F51405BDFK%2330","rawCanonicalId":null},"summary":{"shortDescription":"Renesas RX140 series, R5F51405BDFK#30, 32-Bit Single-Core MCU, 48MHz, 128KB Flash, 32K x 8 RAM, 8K x 8 EEPROM, 53 I/O, CANbus/I²C/SCI/SPI, 64-LQFP, -40°C to 85°C.","salesMarkdown":"## Package and mounting The Renesas R5F51405BDFK#30 is a 32-bit RX140-series microcontroller built around the RXv2 core running at 48 MHz. ## Peripheral fit and I/O count With 53 I/O lines and a peripheral set that includes AES encryption, capacitive touch sensing, DMA, a temperature sensor, and a true random number generator, this MCU targets applications that need both control and security — think HMI panels with touch overlays, CAN-connected sensor nodes, or industrial keypads. The connectivity block covers CANbus, I²C, SCI (UART), and SPI, so it can talk to most common serial peripherals without external bridge chips. The 15-channel 12-bit ADC and dual 8-bit DAC handle the analog front-end for current sensing or signal conditioning. ## Temperature range and deployment environment It is not automotive-qualified (no AEC-Q100 in the record), so it belongs on the factory floor, not under the hood.","metaTitle":"Renesas R5F51405BDFK#30 RX140 MCU, 48MHz, 128KB Flash","metaDescription":"Renesas R5F51405BDFK#30 RX140 32-bit MCU with 48MHz RXv2 core, 128KB Flash, 32KB RAM, 8KB EEPROM. -40°C to 85°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":"RX140","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Speed":"48MHz","Series":"RX140","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"8K x 8","Peripherals":"AES, Capacitive Touch, DMA, LVD, POR, PWM, Temp Sensor, TRNG, WDT","Connectivity":"CANbus, I²C, SCI, SPI","Mounting Type":"Surface Mount","Number of I/O":"53","Core Processor":"RXv2","Package / Case":"64-LQFP","Data Converters":"A/D 15x12b; D/A 2x8b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.7","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.70000","currency":"USD"},{"qty":10,"price":"$3.35800","currency":"USD"},{"qty":25,"price":"$3.28520","currency":"USD"},{"qty":40,"price":"$3.26725","currency":"USD"},{"qty":90,"price":"$2.92944","currency":"USD"},{"qty":270,"price":"$2.91881","currency":"USD"},{"qty":450,"price":"$2.81216","currency":"USD"},{"qty":990,"price":"$2.67352","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/553b3af22590916e0689f691c6103527.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional equivalent to R5F51405BDFK#30?","answer":"The R5F51405BGFL#30 is a pin-compatible sibling in the same RX140 series with the same 48 MHz RXv2 core and 128 KB Flash, but it has 39 I/O instead of 53 and operates up to 105°C. For a higher-temperature variant with the same I/O count, the R5F51406AGFM#30 runs to 105°C but omits the AES and TRNG peripherals."},{"question":"Is R5F51405BDFK#30 compatible with existing RX140 firmware?","answer":"Yes, the R5F51405BDFK#30 is a member of the RX140 series and uses the same RXv2 core. Firmware written for other RX140 devices with the same Flash and RAM footprint should port directly, though peripheral and I/O mapping differences (e.g., 53 I/O vs 39 on some siblings) may require pin-configuration changes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/R5F51405BDFK30","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/R5F51405BDFK30 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}