Renesas R5F51406BDFL#10

Overview

R5F51406BDFL#10 from Renesas is a 32-bit RXv2 core MCU operating at up to 48 MHz, featuring 256 KB on-chip flash, 64 KB SRAM, 8 KB data flash, single-precision FPU, AES-128/256 hardware accelerator, and capacitive touch sensing for up to 24 keys - deployed in industrial HMI and smart sensor nodes requiring secure, low-power real-time control.

For engineers reviewing the R5F51406BDFL#10 datasheet, R5F51406BDFL#10 pinout, R5F51406BDFL#10 application, or R5F51406BDFL#10 equivalent, key selection criteria include its 48-pin LFQFP (7×7 mm, 0.5 mm pitch) package, 1.8–5.5 V single-supply operation, IEC60730-compliant self-test features, and integrated CAN, RSPI, and dual SCI interfaces for deterministic communication in constrained embedded systems.

Technical Context

The R5F51406BDFL#10 implements the RXv2 CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and ultra-compact code density. It integrates an on-chip 48 MHz ±1% high-speed oscillator, PLL, sub-clock (32.768 kHz), and clock accuracy measurement circuit (CAC) for precise timing calibration.

Its peripheral set includes a 12-bit A/D converter with 11 external channels and 0.67 µs conversion time, two 8-bit D/A channels, two comparator B units, RTC with calendar mode, low-power timer (LPT), and event link controller (ELC) enabling CPU-sleep-linked module triggering without interrupt overhead.

Key Specifications

Pinout & Package

Package: PLQP0048KB-B - 48-pin Low-profile Quad Flat Package, 7 mm × 7 mm body, 0.5 mm lead pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit MCU applications.

Compared with R5F51405BDFL#10 and R5F51406ADFL#10, the R5F51406BDFL#10 uniquely delivers full IEC60730 Class B readiness with integrated AES, RNGA, and diagnostic assist circuits - making it the only option among the three for certified safety-critical edge devices requiring both communication and cryptographic integrity.

Availability

R5F51406BDFL#10 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, motor control modules, functional safety gateways, and secure IoT edge devices requiring stable component supply across long production lifecycles.

Supply support for R5F51406BDFL#10 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise markets.

The RX140 Group - including the R5F51406BDFL#10 - is engineered for cost-sensitive, low-power industrial and consumer applications demanding high integration, functional safety compliance, and rich analog/motor control peripherals.

FAQ

What is the maximum operating frequency and core architecture of the R5F51406BDFL#10?

The R5F51406BDFL#10 features a 32-bit RXv2 CPU core with a maximum operating frequency of 48 MHz. It achieves 204 CoreMark at this speed and implements a CISC Harvard architecture with 5-stage pipeline and variable-length instruction encoding. The core includes on-chip FPU, divider, and DSP instructions - all confirmed in the R01DS0379EJ0120 datasheet Rev.1.20. This architecture enables deterministic real-time performance in the R5F51406BDFL#10 for industrial control applications.

Does the R5F51406BDFL#10 include hardware encryption and what algorithms does it support?

Yes, the R5F51406BDFL#10 includes the AESA (Advanced Encryption Standard Hardware Accelerator) module supporting AES-128 and AES-256 key lengths in ECB, CBC, and CTR modes. It also integrates the RNGA (True Random Number Generator) producing 32-bit cryptographically secure values. These features are enabled by the "B" suffix in the part number and are documented in Table 1.3 and Section 1.4 of the R01DS0379EJ0120 datasheet. Both modules are essential for secure firmware updates and TLS stack acceleration in the R5F51406BDFL#10.

What package type and pin count does the R5F51406BDFL#10 use?

The R5F51406BDFL#10 uses the PLQP0048KB-B package: a 48-pin Low-profile Quad Flat Package with 7 mm × 7 mm body size and 0.5 mm lead pitch. This is explicitly defined in Figure 1.1 and Table 1.3 of the R01DS0379EJ0120 datasheet. The "FL" in the part number decodes to LFQFP/48/0.50, confirming the physical form factor. This compact package supports high-density PCB layouts while maintaining manufacturability in standard SMT lines for the R5F51406BDFL#10.

How many A/D converter channels does the R5F51406BDFL#10 support and what is its conversion speed?

The R5F51406BDFL#10 integrates the S12ADE 12-bit A/D converter with 11 external input channels and one internal channel (temperature sensor). Its minimum conversion time is 0.67 µs per channel when ADCLK runs at 48 MHz, as specified in Table 1.1 and Section 35 of the R01DS0379EJ0120 datasheet. Channel-specific sampling time configuration and double-trigger mode for motor control are supported - critical features for precision analog acquisition in the R5F51406BDFL#10.

Is the R5F51406BDFL#10 compliant with IEC60730 and what safety features does it include?

Yes, the R5F51406BDFL#10 includes dedicated IEC60730 compliance features: RAM test assistance using DOC, A/D converter self-diagnostic and disconnection detection, clock frequency accuracy measurement (CAC), and independent watchdog timer (IWDT) with dedicated 15 kHz oscillator. These are explicitly listed under "Useful functions for IEC60730 compliance" in the datasheet's Features section. Together, they enable Class B safety certification for household and industrial appliances - a core design objective of the R5F51406BDFL#10.