Renesas R5F51405BDFK#50

Overview

R5F51405BDFK#50 from Renesas is a 32-bit RXv2 core MCU operating at up to 48 MHz, featuring 128 KB flash, 32 KB SRAM, on-chip FPU, 12-bit A/D converter (15 channels), two 8-bit D/A channels, and integrated AES-128/256 hardware acceleration. It supports CAN 2.0B (1 Mbps), six SCI channels, I²C, RSPI, capacitive touch sensing (32 keys), and operates from 1.8–5.5 V in industrial temperature range (–40 to +85°C).

For engineers reviewing the R5F51405BDFK#50 datasheet, R5F51405BDFK#50 pinout, R5F51405BDFK#50 application, or R5F51405BDFK#50 equivalent, this page delivers verified specifications, package mapping to PLQP0064GA-A (14 × 14 mm, 0.8 mm pitch), validated pin functions, real-world use cases in motor control and HMI, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The R5F51405BDFK#50 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling 204 CoreMark at 48 MHz. Its on-chip FPU complies with IEEE-754 single-precision, and the 32-bit divider completes operations in two clock cycles.

Power management includes four low-power modes, software standby current of 0.25 µA (typ.), and 6.2 µs wake-up time from standby using HOCO 32 MHz. Clock generation integrates PLL, HOCO (48 MHz ±1%), LOCO, sub-clock (32.768 kHz), and CAC for frequency accuracy monitoring.

Key Specifications

Pinout & Package

Package: PLQP0064GA-A - 64-pin LQFP, 14 mm × 14 mm body, 0.8 mm pitch, exposed pad optional per Renesas design guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51405BDFK#50, R5F51405ADFK#30 removes hardware encryption but retains full peripheral compatibility, while R5F51403ADFK#30 reduces memory and omits CAN/CTSU/RTC-making it suitable only for entry-level control, not secure or connected applications.

Availability

R5F51405BDFK#50 is available at Aetrix Electronics and suitable for industrial motor drives, smart metering systems, and secure IoT edge nodes requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F51405BDFK#50 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, and power management solutions for automotive, industrial, and enterprise applications.

The RX140 Group targets cost-optimized, low-power industrial and consumer applications requiring robust real-time performance, functional safety support (IEC60730), and integrated human-machine interface capabilities.

FAQ

What is the maximum operating frequency and core type of the R5F51405BDFK#50?

The R5F51405BDFK#50 features a 32-bit RXv2 CPU core with a maximum operating frequency of 48 MHz, achieving 204 CoreMark performance. Its Harvard architecture, 5-stage pipeline, and variable-length instruction set enable high code density and deterministic real-time execution-critical for industrial control loops and motor drive algorithms executed on the R5F51405BDFK#50.

Does the R5F51405BDFK#50 include hardware encryption acceleration?

Yes, the R5F51405BDFK#50 integrates an Advanced Encryption Standard Hardware Accelerator (AESA) supporting AES-128 and AES-256 in ECB, CBC, and CTR modes. It executes AES-128 in 176 cycles and AES-256 in 240 cycles, and includes a True Random Number Generator (RNGA) for cryptographically secure key generation-all essential for secure firmware updates and data confidentiality in the R5F51405BDFK#50.

What package type and pin count does the R5F51405BDFK#50 use?

The R5F51405BDFK#50 uses the PLQP0064GA-A package: a 64-pin LQFP with 14 mm × 14 mm body size and 0.8 mm pin pitch. This package is RoHS-compliant, supports standard reflow soldering, and provides full access to all peripherals-including CAN, multiple SCI channels, MTU2 timer pins, and CTSU touch inputs-as specified in the official Renesas documentation for the R5F51405BDFK#50.

How many A/D converter channels does the R5F51405BDFK#50 support, and what is its conversion speed?

The R5F51405BDFK#50 integrates a 12-bit S12ADE A/D converter with 15 external input channels (plus one internal temperature sensor channel). At maximum ADCLK of 48 MHz, it achieves a minimum conversion time of 0.67 µs per channel-enabling high-fidelity sampling for motor current sensing or power quality monitoring in demanding applications using the R5F51405BDFK#50.

Is the R5F51405BDFK#50 compatible with IEC60730 Class B safety standards?

Yes, the R5F51405BDFK#50 includes dedicated hardware features for IEC60730 Class B compliance, including self-diagnostic routines for the A/D converter, clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT), RAM test assistance via DOC, and analog input disconnection detection. These capabilities are documented in the R5F51405BDFK#50 datasheet and enable certified functional safety implementation without external supervision circuits.