Renesas R5F52318ADND#40

Overview

R5F52318ADND#40 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), FPU, and TSIP-Lite encryption engine. It targets industrial HMI, smart sensor nodes, and USB-connected embedded control systems requiring real-time responsiveness and secure firmware execution.

For engineers reviewing the R5F52318ADND#40 datasheet, R5F52318ADND#40 pinout, R5F52318ADND#40 application, or R5F52318ADND#40 equivalent, key selection considerations include its 64-pin HWQFN (PWQN0064KC-A) package, 54 MHz system clock with 88.56 DMIPS performance, USB + CAN dual-protocol connectivity, 12-bit analog precision, and −40 to +85°C industrial temperature rating.

Technical Context

The R5F52318ADND#40 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code and single-cycle instruction execution at 54 MHz. It integrates an IEEE 754-compliant 32-bit floating-point unit and 32-bit multiply-accumulate DSP instructions for deterministic signal processing.

Its peripheral set includes a 24-channel 12-bit A/D converter with 0.83 µs conversion time, dual 12-bit D/A outputs, event-link controller (ELC) for interrupt-free module coordination, and TSIP-Lite for AES-128/256 encryption with true random number generation-designed for IEC 60730 Class B compliance in safety-critical applications.

Key Specifications

Pinout & Package

PWQN0064KC-A is a 64-pin heat-sinked wettable flank QFN package with 0.5 mm pitch and 9 × 9 mm body size-optimized for automated optical inspection (AOI) and thermal dissipation in compact industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52318ADND#40, R5F52318BDND#U0 adds CAN capability at identical footprint and price tier, while R5F52317ADND#U0 trades flash/RAM/analog resources for lower unit cost-making all three viable for tiered product families sharing PCB layout and toolchain.

Availability

R5F52318ADND#40 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, USB-connected test instruments, and motor control interface modules requiring stable component supply across extended lifecycle programs.

Supply support for R5F52318ADND#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and IoT markets.

The RX231 Group-including R5F52318ADND#40-is engineered for high-integration embedded control applications demanding real-time performance, robust security, and rich analog/mixed-signal capability in compact packages.

FAQ

What is the maximum system clock frequency supported by the R5F52318ADND#40?

The R5F52318ADND#40 supports a maximum system clock (ICLK) frequency of 54 MHz, delivering 88.56 DMIPS performance. This speed is achievable across the full 1.8–5.5 V supply range, with no wait states on SRAM and accelerated flash access via ROM accelerator hit logic. The R5F52318ADND#40 achieves this using its on-chip PLL with 4–12.5 MHz input range and USB-dedicated PLL for concurrent 48 MHz USB clock generation.

Does the R5F52318ADND#40 include CAN functionality?

No, the R5F52318ADND#40 does not include enabled CAN functionality. According to Renesas datasheet Table 1.2, the R5F52318ADND#40 (RX231 Group, 64-pin package) lists CAN as "Not supported", whereas the pin-compatible R5F52318BDND#U0 variant enables the RSCAN module. The R5F52318ADND#40 retains all other peripherals-including USB, CTSU, A/D, D/A, and TSIP-Lite-but excludes CAN transceiver and message buffer logic.

What package type is used for the R5F52318ADND#40?

The R5F52318ADND#40 uses the PWQN0064KC-A package: a 64-pin HWQFN with 9 × 9 mm body size, 0.5 mm pitch, and wettable flank structure for reliable solder-joint inspection. This package supports −40 to +85°C operation and provides thermal pad exposure for enhanced heat dissipation in space-constrained industrial modules.

Can the R5F52318ADND#40 operate from a 3.3 V supply?

Yes, the R5F52318ADND#40 operates reliably from a 3.3 V supply. Its specified VCC range is 1.8–5.5 V, and at 3.3 V it achieves the full 54 MHz maximum operating frequency. The device includes internal voltage regulators and low-voltage detection (LVD) circuits with configurable thresholds to ensure safe brown-out recovery and reset behavior under varying supply conditions.

What security features are implemented in the R5F52318ADND#40?

The R5F52318ADND#40 integrates TSIP-Lite-a hardware-accelerated security engine supporting AES-128/256 in ECB, CBC, GCM, and CMAC modes, plus SHA-256 hash and true random number generation. Key protection prevents unauthorized access to encryption keys, and the engine is certified for IEC 60730 Class B functional safety compliance. These features are fully operational in the R5F52318ADND#40 without requiring external security ICs.