Renesas R5F52318ADND#U0

Overview

R5F52318ADND#U0 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 512 KB on-chip flash memory, 64 KB SRAM, and integrated USB 2.0 full-speed host/function/OTG, CAN, capacitive touch sensing (24 channels), 12-bit A/D (24 ch), 12-bit D/A (2 ch), RTC, and TSIP-Lite encryption engine. It targets industrial HMI, smart sensor nodes, and USB-connected embedded control systems requiring real-time performance and secure firmware execution.

For engineers reviewing the R5F52318ADND#U0 datasheet, R5F52318ADND#U0 pinout, R5F52318ADND#U0 application, or R5F52318ADND#U0 equivalent, this page delivers verified technical context, package mapping to PWQN0064KC-A (9 × 9 mm HWQFN), validated peripheral specifications, and two confirmed alternative parts for design flexibility in industrial and consumer MCU selection.

Technical Context

The R5F52318ADND#U0 implements the RXv2 CPU core with IEEE 754-compliant 32-bit single-precision FPU, 88.56 DMIPS at 54 MHz, and CISC Harvard architecture with 5-stage pipeline. It supports little-endian instruction/data layout and includes memory protection unit (MPU) for safety-critical operation.

Its clock system integrates 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 - enabling independent ICLK (54 MHz), PCLKA (54 MHz), PCLKD (54 MHz), and BCLK (32 MHz) domains for precise peripheral timing control.

Key Specifications

Pinout & Package

Packaged in 64-pin HWQFN (PWQN0064KC-A), 9 × 9 mm, 0.5 mm pitch, with exposed thermal pad. Pinout conforms to Renesas RX231 Group standard for 64-pin QFN variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52318ADND#U0, R5F52318BDND#U0 adds production-ready CAN and SDHI interfaces without changing layout, while R5F52317ADND#U0 reduces memory and removes security features - offering clear trade-offs between functionality, security, and BOM cost.

Availability

R5F52318ADND#U0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, USB medical devices, and secure gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F52318ADND#U0 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 R5F52318ADND#U0, is designed for high-integration industrial and consumer applications demanding real-time performance, rich analog interfaces, USB connectivity, and hardware security - targeting HMI, sensor hubs, and edge controllers.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F52318ADND#U0?

The R5F52318ADND#U0 operates at a maximum frequency of 54 MHz using the 32-bit RXv2 CPU core. This core delivers 88.56 DMIPS, includes a single-precision IEEE 754 floating-point unit, memory protection unit (MPU), and 5-stage pipeline. Its variable-length instruction set and ultra-compact code reduce flash footprint while maintaining deterministic real-time response - critical for industrial control loops executed on the R5F52318ADND#U0.

Does the R5F52318ADND#U0 support USB device and host functionality?

Yes, the R5F52318ADND#U0 integrates a USB 2.0 full-speed host/function/OTG module compliant with USB 2.0 specification. It supports 12 Mbps (full-speed) and 1.5 Mbps (low-speed) transfers, isochronous mode, BC1.2 battery charging detection, and internal VCC_USB power supply - enabling operation without external USB power circuitry. This dual-role capability is fully implemented in silicon and documented in the R5F52318ADND#U0 datasheet.

What analog peripherals are included in the R5F52318ADND#U0?

The R5F52318ADND#U0 includes a 12-bit S12ADE analog-to-digital converter with 24 input channels and 0.83 µs conversion time, a 12-bit R12DAA digital-to-analog converter with two output channels (0.4 V to AVCC0 − 0.5 V), an integrated temperature sensor (TEMPSA), and two analog comparators (CMPBa). All analog blocks are calibrated and support self-diagnostic functions per IEC60730 - essential for certified industrial applications using the R5F52318ADND#U0.

Is the R5F52318ADND#U0 pin-compatible with other RX231 Group MCUs in the same package?

Yes, the R5F52318ADND#U0 uses the PWQN0064KC-A 64-pin HWQFN package and shares identical pinout with other RX231 Group members in that package, including R5F52317ADND#U0, R5F52318BDND#U0, and R5F52316ADND#U0. Function enablement (e.g., CAN, SDHI, TSIP-Lite) is controlled by mask ROM and software configuration - not pin assignment - ensuring hardware compatibility across the family when using the R5F52318ADND#U0 footprint.

What security features does the R5F52318ADND#U0 provide for firmware protection?

The R5F52318ADND#U0 integrates TSIP-Lite, a hardware encryption engine supporting AES-128/256 in ECB, CBC, GCM, and CMAC modes, plus SHA-256 hash and a true random number generator. Keys are protected against unauthorized access, and the engine prevents firmware cloning or tampering. These features are production-grade and validated for IEC60730 Class B compliance - making the R5F52318ADND#U0 suitable for secure boot, encrypted OTA updates, and trusted execution environments.