Renesas R5F52318ADNE#U0

Overview

R5F52318ADNE#U0 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 12-bit A/D converter with 24 channels - deployed in industrial HMI touch panels requiring real-time capacitive sensing and USB connectivity.

For engineers reviewing the R5F52318ADNE#U0 datasheet, R5F52318ADNE#U0 pinout, R5F52318ADNE#U0 application, or R5F52318ADNE#U0 equivalent, this page delivers verified specifications, package mapping to PWQN0048KB-A (7 × 7 mm HWQFN), functional pinout, real-world use cases, and two validated alternative parts for design continuity.

Technical Context

The R5F52318ADNE#U0 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions, enabling deterministic execution at 54 MHz with one-instruction-per-cycle throughput. It integrates memory protection unit (MPU), on-chip debugging (FINE interface), and event link controller (ELC) for interrupt-free peripheral coordination.

Its clock system includes main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL (4–12.5 MHz input), and USB-dedicated PLL supporting 48 MHz USB clock generation. Power management supports three low-power modes, RTC with battery backup, and LPT operation during software standby.

Key Specifications

Pinout & Package

Packaged in 48-pin HWQFN (PWQN0048KB-A), 7 × 7 mm, 0.5 mm pitch, with exposed thermal pad. Pinout conforms to RX231 Group 48-pin configuration per Table 1.2: 30 general I/O pins (5-V tolerant, open-drain capable), 4 dedicated A/D input pins, 2 D/A output pins, 2 USB DP/DM pins, 2 CAN TX/RX pins, and dedicated reset, clock, and power pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52318ADNE#U0, R5F52318BDNE#U0 adds CAN and SDHI at identical pinout and price tier, while R5F52317ADNE#U0 trades flash/RAM/A-D channels for lower cost - enabling scalable family migration without board redesign.

Availability

R5F52318ADNE#U0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance controllers, USB data loggers, and IEC60730-certified sensor nodes requiring stable component supply across multi-year production cycles.

Supply support for R5F52318ADNE#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 industrial, automotive, and IoT markets.

The RX231 Group - including R5F52318ADNE#U0 - is designed for high-performance, low-power embedded control applications demanding rich analog integration, USB connectivity, and functional safety support.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52318ADNE#U0?

The R5F52318ADNE#U0 operates at a maximum system clock frequency of 54 MHz, delivering 88.56 DMIPS performance using the RXv2 32-bit CPU core. Its 5-stage pipeline and variable-length instruction set enable one-instruction-per-cycle execution for deterministic real-time control. The R5F52318ADNE#U0 achieves this performance while maintaining compatibility with Renesas' RX toolchain and debug ecosystem.

Does the R5F52318ADNE#U0 include an integrated floating-point unit (FPU)?

Yes, the R5F52318ADNE#U0 includes a hardware single-precision floating-point unit compliant with IEEE 754. This FPU accelerates mathematical operations required for sensor fusion, motor control algorithms, and digital signal processing without relying on software emulation. The R5F52318ADNE#U0 uses the FPU transparently through standard compiler intrinsics and math libraries.

What package type and pin count does the R5F52318ADNE#U0 use?

The R5F52318ADNE#U0 is supplied in a 48-pin HWQFN package designated PWQN0048KB-A, measuring 7 × 7 mm with 0.5 mm pitch and an exposed thermal pad. It provides 30 general-purpose I/O pins, including 5-V tolerant and open-drain configurable pins, matching the RX231 Group's 48-pin peripheral allocation per Table 1.2 of the datasheet.

Which communication interfaces are supported by the R5F52318ADNE#U0?

The R5F52318ADNE#U0 supports USB 2.0 full-speed host/function/OTG (12 Mbps), CAN 2.0B (1 Mbps), seven SCI channels (with IrDA and smart card modes), I²C (400 kbps), RSPI (16 Mbps), serial sound interface (SSI), and SD host interface (SDHI). Notably, CAN and SDHI are disabled in the R5F52318ADNE#U0 variant but enabled in the BDNE variant.

Is the R5F52318ADNE#U0 qualified for industrial temperature range operation?

Yes, the R5F52318ADNE#U0 is rated for operation from −40°C to +85°C (D version), meeting industrial-grade reliability requirements. It includes features such as RTC battery backup, low-voltage detection (LVD) with multiple threshold levels, and robust ESD protection - all validated across the full temperature range per Renesas' qualification standards.