Renesas R5F52318ADFP#50

Overview

R5F52318ADFP#50 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 FPU compliant with IEEE 754 single-precision floating-point standard. It features USB 2.0 full-speed host/function/OTG, CAN 2.0B (1 Mbps), 24-channel 12-bit A/D converter (0.83 µs conversion time), and capacitive touch sensing unit supporting up to 24 self-capacitance keys - deployed in industrial HMI and smart sensor edge nodes.

For engineers reviewing the R5F52318ADFP#50 datasheet, R5F52318ADFP#50 pinout, R5F52318ADFP#50 application, or R5F52318ADFP#50 equivalent, key selection considerations include its 100-pin LFQFP package (14 × 14 mm, 0.5 mm pitch), −40 to +85°C temperature grade, absence of SD host interface and CAN module per package-specific configuration, and compatibility with Renesas E2 studio and CS+ development tools.

Technical Context

The R5F52318ADFP#50 implements the RXv2 CPU core with 5-stage CISC Harvard pipeline, variable-length instructions, and hardware divider requiring only two clock cycles for 32-bit ÷ 32-bit operations. It integrates an event link controller (ELC) enabling direct inter-module triggering without CPU intervention, and supports three low-power modes (sleep, deep sleep, software standby) with low-power timer (LPT) active during standby.

Its clock system includes main oscillator (1–20 MHz), sub-clock (32.768 kHz), on-chip high-/low-speed oscillators, PLL (4–12.5 MHz input), and USB-dedicated PLL generating 48 MHz from 54 MHz system clock. Memory subsystem comprises 512 KB flash (no wait states ≤32 MHz, accelerated access at 54 MHz), 64 KB SRAM (no wait states at 54 MHz), and 8 KB data flash rated for 1M program/erase cycles.

Key Specifications

Pinout & Package

Package: 100-pin LFQFP (PLQP0100KB-B), 14 × 14 mm body, 0.5 mm pitch, exposed pad not specified, RoHS-compliant, moisture sensitivity level (MSL) 3 per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52318AGFP#30, the R5F52318ADFP#50 trades extended temperature rating for lower procurement cost while retaining full USB/CTSU/AES capability; versus R5F52308ADFP#30, it adds 256 KB flash, 32 KB RAM, data flash, and full USB 2.0 OTG/BC1.2-making it essential for field-upgradable, human-interface-rich designs.

Availability

R5F52318ADFP#50 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, medical diagnostic tools, and home appliance control boards requiring stable component supply across multi-year production cycles.

Supply support for R5F52318ADFP#50 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 R5F52318ADFP#50, was designed for cost-effective, high-integration embedded control in resource-constrained industrial and consumer equipment demanding USB connectivity, touch interface, and functional safety support.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52318ADFP#50?

The R5F52318ADFP#50 operates at a maximum system clock frequency of 54 MHz using its RXv2 CPU core, delivering 88.56 DMIPS performance. Its hardware floating-point unit (FPU) complies with IEEE 754 single-precision standard, enabling efficient real-time math operations without software emulation overhead. The R5F52318ADFP#50 achieves this performance with no wait states on SRAM and accelerated flash access via ROM accelerator.

Does the R5F52318ADFP#50 support CAN or SD host interface?

No, the R5F52318ADFP#50 does not support CAN or SD host interface. According to Table 1.2 in the official datasheet (R01DS0261EJ0120), these modules are explicitly excluded from the RX231 Group 100-pin LFQFP package variant. The R5F52318ADFP#50 retains USB 2.0 full-speed host/function/OTG, 7× SCI, I²C, RSPI, and SSI-but lacks both CAN and SDHI peripherals present in other RX231 package variants like the 64-pin WFLGA.

What is the package type and pin count of the R5F52318ADFP#50?

The R5F52318ADFP#50 uses a 100-pin LFQFP package designated PLQP0100KB-B, with physical dimensions of 14 × 14 mm and 0.5 mm pin pitch. This package is RoHS-compliant and rated for operation from −40 to +85°C. Pinout information is fully documented in Section 5 "Pin Functions" of the R01DS0261EJ0120 datasheet, confirming dedicated USB, CTSU, A/D, and D/A signal assignments.

How many channels does the A/D converter on the R5F52318ADFP#50 support, and what is its speed?

The R5F52318ADFP#50 integrates a 12-bit successive-approximation A/D converter with 24 input channels. Its minimum conversion time is 0.83 µs per channel when the ADCLK runs at 54 MHz. Each channel supports individually programmable sampling time, and conversion can be triggered by software, timers (MTU/TPU), external signals, or the event link controller (ELC)-enabling synchronized multi-sensor acquisition without CPU polling.

Is the R5F52318ADFP#50 compatible with Renesas' development tools and debug interfaces?

Yes, the R5F52318ADFP#50 is fully supported by Renesas' E2 studio IDE and CS+ development environment. It uses the FINE (Fast In-Circuit Emulator) debug interface for on-chip debugging, allowing full breakpoint, watchpoint, and real-time trace capabilities. Renesas provides dedicated device files, example projects, and HAL drivers for the R5F52318ADFP#50, ensuring seamless integration into production firmware development workflows.