Renesas R5F52318BDND#40

Overview

R5F52318BDND#40 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 512 KB on-chip flash, 64 KB SRAM, and 8 KB data flash. It integrates USB 2.0 full-speed host/function/OTG, CAN 2.0B (1 Mbps), 24-channel 12-bit A/D converter (0.83 µs conversion), dual 12-bit D/A outputs, capacitive touch sensing (24 keys), and TSIP-Lite encryption engine supporting AES-128/256. It targets industrial HMI and secure IoT edge nodes requiring real-time control, connectivity, and tamper-resistant firmware.

For engineers reviewing the R5F52318BDND#40 datasheet, R5F52318BDND#40 pinout, R5F52318BDND#40 application, or R5F52318BDND#40 equivalent, key selection considerations include its 64-pin HWQFN (9 × 9 mm) package, −40 to +85°C temperature grade, integrated USB/CAN/SDHI peripherals, FPU-enabled floating-point performance (88.56 DMIPS), and support for IEC60730 safety diagnostics.

Technical Context

The R5F52318BDND#40 belongs to the RX231 Group and implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions. It supports little-endian or big-endian data arrangement, IEEE 754-compliant 32-bit FPU, and 32-bit × 32-bit multiplier with 64-bit result.

Its clock system includes main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL (4–12.5 MHz input), USB-dedicated PLL (4/6/8/12 MHz), and on-chip high-/low-speed oscillators. System clock runs at up to 54 MHz (ICLK), while peripheral clocks (PCLKA/B/D, BCLK, FCLK) are independently configurable up to 54 MHz or 32 MHz depending on module.

Key Specifications

Pinout & Package

Package: PWQN0064KC-A - 64-pin Heat Sink Quad Flat No-lead (HWQFN), 9 × 9 mm body, 0.5 mm 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 R5F52318BDND#40, R5F52318ADND#U0 removes security features but retains full peripheral functionality, while R5F52317BDND#U0 reduces memory and omits CAN/SDHI-making both viable alternatives only where those specific capabilities are not required in the target design.

Availability

R5F52318BDND#40 is available at Aetrix Electronics and suitable for industrial HMI, secure IoT gateways, smart energy meters, and medical sensor hubs requiring stable component supply across extended product lifecycles.

Supply support for R5F52318BDND#40 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 solutions for industrial, automotive, and IoT markets.

The RX231 Group, including R5F52318BDND#40, is designed for high-performance, secure, and safety-certifiable embedded applications demanding real-time responsiveness, rich connectivity, and robust firmware protection.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52318BDND#40?

The R5F52318BDND#40 operates at a maximum system clock frequency of 54 MHz using the RXv2 32-bit CPU core. At this speed, it delivers 88.56 DMIPS of processing performance and supports IEEE 754-compliant single-precision floating-point operations via its integrated FPU-enabling efficient execution of control algorithms, signal processing, and real-time analytics in the R5F52318BDND#40.

Does the R5F52318BDND#40 support USB and CAN interfaces simultaneously?

Yes, the R5F52318BDND#40 integrates both USB 2.0 full-speed host/function/OTG and a CAN 2.0B module (1 Mbps) on-chip. These operate independently with dedicated clock domains and DMA resources, allowing concurrent use-for example, USB device-mode firmware updates while maintaining real-time CAN bus communication in industrial control systems using the R5F52318BDND#40.

What security features does the R5F52318BDND#40 include?

The R5F52318BDND#40 includes TSIP-Lite, a hardware security engine supporting AES-128/256 in GCM, CBC, CTR, and other modes, plus SHA-256 hash, true random number generation, and secure key management. It also provides IEC60730-compliant self-test functions for A/D, IWDT, clock accuracy, and RAM-making the R5F52318BDND#40 suitable for certified safety-critical and secure firmware deployments.

What is the package type and pin count of the R5F52318BDND#40?

The R5F52318BDND#40 uses the PWQN0064KC-A package: a 64-pin Heat Sink Quad Flat No-lead (HWQFN) with 9 × 9 mm body size, 0.5 mm pitch, and an exposed thermal pad. This compact, thermally enhanced package supports high-density PCB layouts while enabling reliable thermal dissipation in fanless industrial enclosures for the R5F52318BDND#40.

How many analog-to-digital and digital-to-analog channels does the R5F52318BDND#40 provide?

The R5F52318BDND#40 includes a 24-channel 12-bit successive-approximation A/D converter with minimum conversion time of 0.83 µs and per-channel programmable sampling time. It also integrates two independent 12-bit D/A converters with output voltage range of 0.4 V to AVCC0 − 0.5 V-providing flexible analog signal generation and conditioning capability within the R5F52318BDND#40.