Renesas R5F52318BDNE#00

Overview

R5F52318BDNE#00 from Renesas is a 32-bit RXv2 core microcontroller operating at up to 54 MHz (88.56 DMIPS), featuring 512 KB on-chip flash, 64 KB SRAM, 8 KB data flash, integrated FPU (IEEE 754 single-precision), and hardware encryption (TSIP-Lite AES-128/256). It supports USB 2.0 full-speed host/function/OTG, CAN, SD host interface, capacitive touch sensing (10 channels), 12-bit A/D (12 channels), 12-bit D/A (2 channels), RTC, and operates from 1.8–5.5 V across −40 to +85°C.

For engineers reviewing the R5F52318BDNE#00 datasheet, R5F52318BDNE#00 pinout, R5F52318BDNE#00 application, or R5F52318BDNE#00 equivalent, this MCU targets industrial HMI, smart sensors, and embedded control systems requiring real-time performance, secure firmware updates, low-power operation with software standby mode, and mixed-signal integration without external clock sources or level shifters.

Technical Context

The R5F52318BDNE#00 belongs to the RX231 Group and uses the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions. It integrates a memory protection unit (MPU), on-chip debugging (FINE interface), and event link controller (ELC) enabling interrupt-free inter-module triggering - critical for deterministic real-time response in motor control and sensor fusion.

Its clock system includes main (1–20 MHz), sub (32.768 kHz), and dedicated oscillators for USB (4/6/8/12 MHz PLL), IWDT (15 kHz), and LPT, with independent clock domains (ICLK/PCLKA/PCLKB/PCLKD/BCLK/FCLK) allowing precise power/performance trade-offs. The device implements TSIP-Lite for AES-GCM/CBC/ECB, true random number generation, and key protection - meeting IEC60730 Class B requirements.

Key Specifications

Pinout & Package

Package: 48-pin HWQFN (PWQN0048KB-A), 7 × 7 mm body, 0.5 mm pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52318BDNE#00, R5F52318ADNE#U0 removes CAN and SDHI while retaining USB/SCI/CTSU - ideal for streamlined HMI. R5F52317BDNE#U0 offers 128 KB less flash but identical peripheral set, making it suitable for fixed-function devices with constrained code size.

Availability

R5F52318BDNE#00 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, PLC I/O modules, and USB-C industrial chargers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F52318BDNE#00 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 RX231 Group, including R5F52318BDNE#00, was designed for cost-sensitive industrial and consumer applications demanding real-time performance, functional safety compliance (IEC60730), and rich analog/mixed-signal integration in compact packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52318BDNE#00?

The R5F52318BDNE#00 operates at a maximum system clock frequency of 54 MHz, delivering 88.56 DMIPS. Its RXv2 CPU core features a 5-stage pipeline, variable-length instructions, and hardware floating-point unit compliant with IEEE 754 - enabling efficient execution of real-time control algorithms and signal processing tasks within the R5F52318BDNE#00's 512 KB flash and 64 KB SRAM resources.

Does the R5F52318BDNE#00 support CAN communication, and what standard does it comply with?

Yes, the R5F52318BDNE#00 includes one CAN module (RSCAN) compliant with ISO11898-1, supporting both standard and extended frames at up to 1 Mbps. This capability is confirmed in Table 1.2 of the datasheet for the RX231 Group in 48-pin packages like the R5F52318BDNE#00, making it suitable for industrial automation and automotive subsystem applications requiring robust serial bus communication.

What package type and pin count does the R5F52318BDNE#00 use?

The R5F52318BDNE#00 uses a 48-pin HWQFN package (PWQN0048KB-A), measuring 7 × 7 mm with 0.5 mm pitch and an exposed thermal pad. This compact, leadless package is specified in Table 1.3 of the datasheet for the D-version RX231 Group and supports high-density PCB layouts while maintaining thermal performance for industrial ambient conditions.

How many analog-to-digital converter (A/D) channels does the R5F52318BDNE#00 provide, and what is its resolution?

The R5F52318BDNE#00 integrates a 12-bit S12ADE A/D converter with 12 input channels, as confirmed in Table 1.2 for the RX231 Group in 48-pin packages. Each channel supports programmable sampling time, and conversion completes in as little as 0.83 µs when ADCLK runs at 54 MHz - enabling high-speed sensor acquisition within the R5F52318BDNE#00's real-time control loop.

Is the R5F52318BDNE#00 supported for IEC60730 Class B compliance, and which features enable this?

Yes, the R5F52318BDNE#00 includes built-in functions to assist IEC60730 Class B compliance, including self-diagnostic support for the A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test assistance via DOC, and analog input disconnection detection. These capabilities are explicitly listed under "Useful functions for IEC60730 compliance" in the datasheet and are implemented in silicon within the R5F52318BDNE#00.