Renesas R5F52318BDFM#10

Overview

R5F52318BDFM#10 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 with AES-128/256). It targets industrial HMI, smart sensor nodes, and USB-connected embedded control systems requiring real-time responsiveness, secure firmware updates, and low-power operation across −40°C to +85°C.

For engineers reviewing the R5F52318BDFM#10 datasheet, R5F52318BDFM#10 pinout, R5F52318BDFM#10 application, or R5F52318BDFM#10 equivalent, this MCU delivers verified USB 2.0 full-speed host/function/OTG, CAN 2.0B (1 Mbps), 24-channel 12-bit ADC (0.83 µs conversion), dual 12-bit DAC, capacitive touch sensing (24 keys), RTC with battery backup, and ELC-driven event-triggered peripheral coordination - all in a 64-pin LFQFP (10 × 10 mm, 0.5 mm pitch) package.

Technical Context

The R5F52318BDFM#10 implements the RXv2 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions, enabling ultra-compact code and deterministic interrupt latency. Its memory subsystem includes no-wait 54 MHz SRAM access, flash accelerator for zero-wait execution above 32 MHz, and background operation (BGO) for 8 KB data flash programming during active code execution.

Peripherals are coordinated via the Event Link Controller (ELC), which enables direct module-to-module triggering without CPU intervention - e.g., MTU2 timer events initiating A/D conversions or SCI transmission completion triggering DMA transfers. Clock management supports independent domain control: ICLK (54 MHz system clock), PCLKA (54 MHz for MTU2), PCLKD (54 MHz for S12AD), and BCLK (32 MHz external bus).

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin Low-Profile Quad Flat Package, 10 × 10 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 R5F52318BDFM#10, R5F52318ADFM#30 removes CAN and SDHI while preserving all other capabilities and footprint, offering cost savings where those interfaces are unused; R5F52317BDFM#30 reduces flash and RAM capacity but retains identical peripheral functionality and pinout, enabling scalable design reuse across product tiers.

Availability

R5F52318BDFM#10 is available at Aetrix Electronics and suitable for industrial HMI, smart sensor gateways, and USB-CAN bridge applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for R5F52318BDFM#10 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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX231 Group - including R5F52318BDFM#10 - was designed for high-integration industrial control applications demanding real-time performance, functional safety support (IEC 60730), secure firmware execution, and rich connectivity (USB, CAN, SDHI, CTSU) in compact packages.

FAQ

What is the maximum operating frequency and core architecture of the R5F52318BDFM#10?

The R5F52318BDFM#10 operates at a maximum frequency of 54 MHz using the 32-bit RXv2 CPU core, delivering 88.56 DMIPS. It features a CISC Harvard architecture with 5-stage pipeline, variable-length instructions, on-chip FPU (IEEE 754 single-precision), and memory protection unit (MPU). This architecture enables deterministic real-time response and efficient code density for industrial firmware.

Does the R5F52318BDFM#10 support USB host functionality and what are its power requirements?

Yes, the R5F52318BDFM#10 integrates a full-featured USB 2.0 host/function/OTG module supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) operation. When VCC is between 4.0 V and 5.5 V, the internal USB regulator powers VCC_USB, eliminating the need for an external 3.3 V supply. The module also supports BC1.2 battery charging detection for compatible downstream ports.

What analog peripherals are included in the R5F52318BDFM#10 and how are they configured?

The R5F52318BDFM#10 includes a 24-channel 12-bit A/D converter (S12ADE) with 0.83 µs minimum conversion time at 54 MHz ADCLK, two 12-bit D/A converters (R12DAA), two analog comparator units (four total channels), and an on-die temperature sensor (TEMPSA). Sampling time is configurable per ADC channel, and DAC outputs range from 0.4 V to AVCC0 − 0.5 V.

How does the Event Link Controller (ELC) enhance real-time performance in the R5F52318BDFM#10?

The ELC in the R5F52318BDFM#10 allows 61 types of hardware events (e.g., timer overflow, SCI transmission complete) to directly trigger peripheral actions (e.g., ADC conversion start, DMA transfer) without CPU involvement or interrupt latency. This enables deterministic, low-jitter coordination between modules - such as synchronizing PWM output with ADC sampling - even while the CPU is in deep sleep mode.

Is the R5F52318BDFM#10 qualified for industrial temperature range and what safety features does it offer?

Yes, the R5F52318BDFM#10 is rated for −40°C to +85°C (D version) and includes multiple IEC 60730 Class B compliance aids: self-diagnostic A/D converter, clock accuracy measurement circuit (CAC), independent watchdog timer (IWDT), RAM test assistance via Data Operation Circuit (DOC), and analog input disconnection detection - all documented in Renesas' functional safety manual.