Renesas R5F51405BDFN#30

Overview

R5F51405BDFN#30 from Renesas is a 32-bit RXv2 core MCU operating at 48 MHz with 128 KB flash, 32 KB SRAM, on-chip FPU, 12-bit A/D converter (18 channels), two 8-bit D/A channels, CAN interface (ISO 11898-1, up to 1 Mbps), and hardware AES encryption. It targets industrial HMI, sensor nodes, and motor control where real-time responsiveness, low-power operation, and secure firmware updates are required.

For engineers reviewing the R5F51405BDFN#30 datasheet, R5F51405BDFN#30 pinout, R5F51405BDFN#30 application, or R5F51405BDFN#30 equivalent, key selection criteria include its 80-pin LFQFP package, –40°C to +85°C temperature grade, integrated capacitive touch sensing (up to 36 keys), IEC60730 compliance features, and support for background data flash operations.

Technical Context

The R5F51405BDFN#30 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling 204 CoreMark at 48 MHz. Its memory subsystem includes no-wait-state SRAM, 128 KB flash with 1.8 V programmability, and 4 KB data flash rated for 1 million erase/program cycles with background operation.

Peripherals are orchestrated via the Event Link Controller (ELC), enabling interrupt-free module triggering and linked operation during CPU sleep. Clock management supports multiple oscillators (HOCO, LOCO, sub-clock, PLL) with independent domain clocks (ICLK/PCLK/FCLK), while the CAC circuit validates clock accuracy for functional safety applications.

Key Specifications

Pinout & Package

Package: PLQP0080KB-B - 80-pin Low-Profile Quad Flat Package, 12 mm × 12 mm body, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F51405ADFN#30, R5F51405BDFN#30 adds hardware AES/RNG for secure firmware and communications without performance penalty; compared with R5F51406BDFN#30, it trades flash/SRAM capacity for lower cost and footprint in resource-constrained designs.

Availability

R5F51405BDFN#30 is available at Aetrix Electronics and suitable for industrial HMI, smart sensor nodes, brushless motor controllers, and home appliance control units requiring stable component supply and long-term lifecycle support.

Supply support for R5F51405BDFN#30 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX140 Group is designed for cost-sensitive, low-power embedded applications demanding real-time performance, functional safety support, and rich analog/motor control peripherals-targeting industrial automation and consumer white goods.

FAQ

What is the maximum operating frequency and core type of the R5F51405BDFN#30?

The R5F51405BDFN#30 features a 32-bit RXv2 CPU core with a maximum operating frequency of 48 MHz. It achieves 204 CoreMark at this speed and includes a hardware floating-point unit compliant with IEEE-754. The core uses a 5-stage pipeline and variable-length instruction encoding to deliver high code density and deterministic real-time execution-critical for time-sensitive industrial control tasks handled by the R5F51405BDFN#30.

Does the R5F51405BDFN#30 support hardware encryption and secure boot capabilities?

Yes, the R5F51405BDFN#30 integrates the Advanced Encryption Standard Hardware Accelerator (AESA) supporting 128- and 256-bit keys in ECB, CBC, and CTR modes, plus a True Random Number Generator (RNGA). These enable secure firmware authentication, encrypted OTA updates, and TLS stack acceleration. Unlike variants without the 'B' suffix (e.g., R5F51405ADFN#30), the R5F51405BDFN#30 provides these features as silicon-hardened blocks-not software libraries-ensuring deterministic timing and side-channel resistance.

What package type and pin count does the R5F51405BDFN#30 use?

The R5F51405BDFN#30 uses the PLQP0080KB-B package: an 80-pin Low-Profile Quad Flat Package with 12 mm × 12 mm body size and 0.5 mm pin pitch. This package includes an exposed thermal pad for enhanced heat dissipation and is rated for operation from –40°C to +85°C. Pin compatibility is maintained across all RX140 80-pin variants, allowing direct substitution within the same temperature grade and memory configuration-such as upgrading from R5F51405ADFN#30 to R5F51405BDFN#30 without PCB changes.

How many A/D and D/A channels does the R5F51405BDFN#30 include, and what are their key specs?

The R5F51405BDFN#30 includes one 12-bit successive-approximation A/D converter (S12ADE) with 18 input channels (17 external + 1 internal) and two 8-bit voltage-output D/A channels. The A/D converter achieves a minimum conversion time of 0.67 µs at 48 MHz ADCLK and supports scan modes, sampling time per channel, and self-diagnostic functions. The D/A outputs range from 0 V to AVCC0 and are used for analog signal generation, biasing, or calibration-key capabilities leveraged in sensor conditioning and motor control applications using the R5F51405BDFN#30.

Is the R5F51405BDFN#30 qualified for IEC60730 Class B compliance?

Yes, the R5F51405BDFN#30 includes dedicated hardware features to support IEC60730 Class B compliance, including self-diagnostic functions for the A/D converter, independent watchdog timer (IWDT), RAM test assistance via the Data Operation Circuit (DOC), and clock frequency accuracy measurement (CAC). These reduce software validation burden and enable robust failure detection in safety-critical home appliances and industrial equipment. The R5F51405BDFN#30's documentation explicitly references IEC60730 support in its datasheet features and peripheral descriptions-confirming its suitability for Class B implementations.