{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"R5F51406BDFL#30","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"R5F51406BDFL30","canonicalUrl":"https://icboms.com/renesas/R5F51406BDFL30","factsUrl":"https://icboms.com/api/mcp/products/R5F51406BDFL%2330","rawCanonicalId":null},"summary":{"shortDescription":"Renesas Electronics RX140 series 32-Bit Single-Core MCU, R5F51406BDFL#30, 48MHz RXv2 core, 256KB Flash, 64KB RAM, 8KB EEPROM, 48-LQFP, -40°C to 85°C.","salesMarkdown":"## RXv2 core at 48 MHz — real-time control headroom The R5F51406BDFL#30: The RXv2 core at 48 MHz delivers enough throughput for a single motor-control loop with sensor feedback or a CANopen node handling a few hundred PDOs per second. 256 KB flash and 64 KB RAM leave room for a modest RTOS, a communication stack, and the application logic without squeezing into a smaller part. The 8 KB on-chip EEPROM (8K x 8) stores calibration constants or boot parameters without an external serial EEPROM — one less BOM line and no I²C/SPI traffic to fetch them at power-up. ## Peripheral set that reduces external count On-chip AES and a true random number generator (TRNG) handle encryption key generation and data authentication without a separate security coprocessor. Capacitive touch sensing with the internal oscillator means a touch interface needs only the electrode traces and a firmware scan routine. The 11-channel 12-bit A/D converter (A/D 11x12b) covers analog inputs like thermistors, potentiometers, or current-sense resistors. With the internal oscillator and POR/LVD, the MCU starts up and monitors the supply rail without external reset or clock components. CANbus, I²C, SCI, and SPI (Connectivity: CANbus, I²C, SCI, SPI) cover the common industrial and sensor interfaces — a CAN transceiver on one side, an SPI ADC or display on the other, and an SCI UART for debug or Modbus RTU. ## Supply and temperature — single-rail or battery operation No separate I/O voltage rail is needed — the same supply powers the core and I/O. The 48-LQFP (7x7 mm) footprint (Package / Case: 48-LQFP, Supplier Device Package: 48-LFQFP (7x7)) is a standard 0.5 mm-pitch package — four-layer board fan-out is straightforward. The 39 I/O pins (Number of I/O: 39) in the 48-LQFP package leave a few pins unused for future expansion — enough for a parallel LCD or extra sensor inputs without jumping to a larger package.","metaTitle":"R5F51406BDFL#30 RX140 MCU 48MHz 256KB Flash 48LQFP","metaDescription":"Renesas RX140 32-bit MCU, 48MHz RXv2 core, 256KB flash, 64KB RAM, 8KB EEPROM, CANbus, -40°C to 85°C, 48-LQFP. Active production, ROHS3. Request quote.","metaKeywords":null},"attributes":{"series":"RX140","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Speed":"48MHz","Series":"RX140","Package":"Tray","RAM Size":"64K 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":"39","Core Processor":"RXv2","Package / Case":"48-LQFP","Data Converters":"A/D 11x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-LFQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.95","stockQuantity":14,"priceTiers":[{"qty":1,"price":"$3.95000","currency":"USD"},{"qty":10,"price":"$3.58700","currency":"USD"},{"qty":25,"price":"$3.50880","currency":"USD"},{"qty":40,"price":"$3.49000","currency":"USD"},{"qty":80,"price":"$3.12925","currency":"USD"},{"qty":250,"price":"$3.11784","currency":"USD"},{"qty":500,"price":"$3.00390","currency":"USD"},{"qty":1000,"price":"$2.85580","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/553b3af22590916e0689f691c6103527.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional alternative to R5F51406BDFL#30 — can R5F51405BGFL#30 drop in without a board spin?","answer":"The peer R5F51405BGFL#30 shares the same RXv2 core at 48 MHz, same 256 KB flash, same 64 KB RAM, same peripheral set including AES, TRNG, capacitive touch, CANbus, I²C, SCI, SPI, and the same 48-LQFP package. The pinout and footprint are identical — a board designed for one accepts the other without rewiring, provided the application can tolerate the wider temp grade."},{"question":"What is the listed speed of R5F51406BDFL#30?","answer":"The core runs at 48 MHz (Speed: 48MHz) on the 32-bit RXv2 architecture."},{"question":"What compliance documentation does Renesas provide for R5F51406BDFL#30?","answer":"Renesas confirms ROHS3 Compliant status for this part. Standard compliance documentation includes the RoHS certificate of compliance and the REACH declaration — these are available through the Renesas compliance portal or upon request with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/R5F51406BDFL30","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/R5F51406BDFL30 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}