Renesas R5F51406BDFN#30

Overview

R5F51406BDFN#30 from Renesas is a 32-bit RXv2 core MCU operating at up to 48 MHz, featuring 256 KB flash, 64 KB SRAM, 8 KB data flash, on-chip FPU, AES-128/256 hardware accelerator, and CAN 2.0B compliance. It supports capacitive touch sensing (up to 36 keys), 12-bit A/D conversion in 0.67 µs, and operates from 1.8–5.5 V across –40 to +85°C.

For engineers reviewing the R5F51406BDFN#30 datasheet, R5F51406BDFN#30 pinout, R5F51406BDFN#30 application, or R5F51406BDFN#30 equivalent, key selection criteria include integrated encryption for IEC60730-compliant industrial control, low-power software standby mode (0.25 µA), and 80-pin LFQFP package with 69 general-purpose I/Os including 5-V-tolerant and open-drain options.

Technical Context

The R5F51406BDFN#30 implements the RXv2 CISC Harvard architecture with 5-stage pipeline, variable-length instructions, and ultra-compact code density. Its CPU delivers 204 CoreMark at 48 MHz and includes dedicated 32-bit multiplier, 32-bit divider (2-cycle), barrel shifter, and IEEE-754-compliant single-precision FPU.

Power management integrates four low-power modes, LPT with sub-clock operation during software standby, and fast wake-up (6.2 µs). Clocking combines HOCO (48 MHz ±1%), PLL, sub-clock (32.768 kHz), and IWDT-dedicated 15 kHz oscillator, with independent ICLK/PCLK/FCLK domains enabling precise peripheral clock scaling.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51406ADFN#30, the R5F51406BDFN#30 adds hardware AES/RNG for secure boot and OTA, while R5F51405BDFN#30 trades memory capacity for cost reduction - both retain identical pinout, peripherals, and low-power behavior.

Availability

R5F51406BDFN#30 is available at Aetrix Electronics and suitable for industrial motor control, smart home hubs, medical patient monitors, and energy metering gateways requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F51406BDFN#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX140 Group targets cost-sensitive, safety-aware industrial and consumer applications requiring real-time performance, low-power operation, and integrated security - designed specifically for IEC60730-compliant appliances and edge-sensing nodes.

FAQ

What is the maximum operating frequency and core type of the R5F51406BDFN#30?

The R5F51406BDFN#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 an IEEE-754-compliant single-precision FPU, 32-bit multiplier, and 2-cycle divider. The core uses CISC Harvard architecture with 5-stage pipeline and variable-length instructions for high code density and deterministic execution.

Does the R5F51406BDFN#30 support hardware encryption and what algorithms are implemented?

Yes, the R5F51406BDFN#30 includes the AESA (Advanced Encryption Standard Hardware Accelerator) supporting AES-128 and AES-256 in ECB, CBC, and CTR modes. It executes 128-bit encryption in 176 cycles and 256-bit in 240 cycles, compliant with FIPS PUB 197. It also integrates RNGA (True Random Number Generator) producing 32-bit random values with interrupt capability - both modules are enabled in the 'B' variant of the R5F51406BDFN#30.

What package type and pin count does the R5F51406BDFN#30 use?

The R5F51406BDFN#30 uses the PLQP0080KB-B package: an 80-pin Low-Profile Quad Flat Package measuring 12 mm × 12 mm with 0.5 mm lead pitch and an exposed thermal pad. This package supports 69 general-purpose I/O pins, including 5-V-tolerant and open-drain options, and is rated for operation from –40 to +85°C.

How many A/D converter channels and what conversion speed does the R5F51406BDFN#30 provide?

The R5F51406BDFN#30 integrates the S12ADE 12-bit A/D converter with 18 total channels (17 external + 1 internal temperature sensor input). At maximum ADCLK of 48 MHz, it achieves a minimum conversion time of 0.67 µs per channel. Sampling time is configurable per channel, and it supports scan modes, double-trigger for motor control, and self-diagnostic functions required for IEC60730 compliance.

Is CAN functionality available on the R5F51406BDFN#30 and what standard does it meet?

Yes, the R5F51406BDFN#30 includes the RSCAN CAN module supporting ISO 11898-1 (CAN 2.0B) at data rates up to 1 Mbps. It provides 16 mailboxes for message filtering and prioritization and operates independently via the Event Link Controller (ELC) to reduce CPU load. The module requires external CAN transceiver circuitry (e.g., SN65HVD230) for physical layer connection to the bus.