Renesas R5F52317BDND#40

Overview

R5F52317BDND#40 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 384 KB on-chip flash memory, 32 KB SRAM, and integrated FPU compliant to IEEE 754. It features USB 2.0 full-speed host/function/OTG, CAN interface (ISO 11898-1), 24-channel 12-bit A/D converter (0.83 µs conversion time), and capacitive touch sensing unit supporting up to 24 keys - deployed in industrial HMI and smart sensor nodes requiring real-time control and secure connectivity.

For engineers reviewing the R5F52317BDND#40 datasheet, R5F52317BDND#40 pinout, R5F52317BDND#40 application, or R5F52317BDND#40 equivalent, this MCU delivers deterministic real-time performance via ELC-triggered peripheral coordination, low-power operation down to software standby mode with LPT, and IEC60730-compliant self-diagnostic functions for safety-critical firmware updates and analog subsystem validation.

Technical Context

The R5F52317BDND#40 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling 88.56 DMIPS at 54 MHz. It integrates TSIP-Lite encryption engine supporting AES-128/256 in GCM/CBC modes and a true random number generator for secure key management.

Its clock system includes main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL (4–12.5 MHz input), and USB-dedicated PLL generating 48 MHz for USB operation while maintaining 54 MHz system clock. Peripheral clocks are independently configurable: ICLK (54 MHz), PCLKA (54 MHz), PCLKD (54 MHz), PCLKB (32 MHz), BCLK (32 MHz), FCLK (32 MHz).

Key Specifications

Pinout & Package

Package: PWQN0064KC-A - 64-pin HWQFN, 9 × 9 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 industrial MCU applications.

Compared with R5F52317BDND#40, R5F52317ADND#U0 removes CAN but retains identical footprint and core peripherals, while R5F52318BDND#U0 expands memory and adds SDHI - making the former ideal for simplified designs and the latter essential for data-intensive edge nodes.

Availability

R5F52317BDND#40 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, USB-capable gateways, and IEC60730-certified appliance controllers requiring stable component supply across multi-year production cycles.

Supply support for R5F52317BDND#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 automotive, industrial, and IoT markets.

The RX231 Group, including R5F52317BDND#40, is engineered for real-time industrial control with integrated security, low-power operation, and rich analog/peripheral integration - targeting HMI, sensor fusion, and safety-certifiable equipment.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52317BDND#40?

The R5F52317BDND#40 operates at a maximum system clock frequency of 54 MHz using its RXv2 32-bit CPU core, delivering 88.56 DMIPS of processing performance. Its Harvard architecture with 5-stage pipeline and variable-length instruction set enables efficient code density and deterministic real-time execution critical for industrial control loops and protocol stacks within the R5F52317BDND#40.

Does the R5F52317BDND#40 support USB 2.0 full-speed device and host functionality?

Yes, the R5F52317BDND#40 integrates a USB 2.0 host/function module compliant with full-speed (12 Mbps) and low-speed (1.5 Mbps) operation, including OTG capability and BC1.2 battery charging support. Its on-chip USB transceiver and internal VCC_USB regulator allow operation without external power circuitry when VCC is 4.0–5.5 V - a key feature of the R5F52317BDND#40 for compact embedded designs.

What analog peripherals are included in the R5F52317BDND#40?

The R5F52317BDND#40 includes a 24-channel 12-bit A/D converter (S12ADE) with 0.83 µs minimum conversion time, two 12-bit D/A channels (R12DAA), an on-chip temperature sensor (TEMPSA), and two dual-channel analog comparators (CMPBa). These peripherals are fully supported in the R5F52317BDND#40's hardware design for sensor signal conditioning, closed-loop control, and thermal monitoring.

Is the R5F52317BDND#40 qualified for IEC60730 Class B compliance?

Yes, the R5F52317BDND#40 provides hardware-assisted functions required for IEC60730 Class B compliance, including RAM test assistance via DOC, A/D self-diagnostic and analog input disconnection detection, clock frequency accuracy measurement (CAC), and independent watchdog timer (IWDT) with dedicated oscillator. These capabilities are built into the R5F52317BDND#40 silicon and documented in Renesas Application Note R01AN2823.

What package type and pin count does the R5F52317BDND#40 use?

The R5F52317BDND#40 uses the PWQN0064KC-A package: a 64-pin HWQFN with 9 × 9 mm body size, 0.5 mm pitch, and exposed thermal pad. This package is pin-compatible with other RX231 Group members in the same 64-pin HWQFN variant, ensuring layout reuse across memory and peripheral variants of the R5F52317BDND#40 family.