Renesas R5F52315ADFP#10

Overview

R5F52315ADFP#10 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 128 KB on-chip flash memory, 32 KB SRAM, and integrated 12-bit A/D converter (24 channels), 12-bit D/A converter (2 channels), USB 2.0 full-speed host/function/OTG, CAN interface, RTC, capacitive touch sensing unit (24 keys), and TSIP-Lite encryption engine. It operates from 1.8–5.5 V across −40 to +85°C and targets industrial HMI, sensor gateway, and secure embedded control applications.

For engineers reviewing the R5F52315ADFP#10 datasheet, R5F52315ADFP#10 pinout, R5F52315ADFP#10 application, or R5F52315ADFP#10 equivalent, key selection considerations include its 100-pin LFQFP package (PLQP0100KB-B), absence of SDHI and CAN in the RX231 Group variant, FPU-enabled floating-point performance (88.56 DMIPS), and support for IEC60730-compliant self-diagnostic functions including A/D disconnection detection and RAM test assistance.

Technical Context

The R5F52315ADFP#10 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 single-precision FPU, 32-bit multiplier, and hardware divider with fastest division in two clock cycles.

Its peripheral set includes four-channel DMAC, event link controller (ELC) for interrupt-free module triggering, multi-function pin controller (MPC), and low-power modes (sleep, deep sleep, software standby) with LPT running during standby. Clock generation supports main (1–20 MHz), sub (32.768 kHz), and USB-dedicated PLLs, enabling independent 54 MHz system clock and 48 MHz USB clock.

Key Specifications

Pinout & Package

Package: PLQP0100KB-B - 100-pin Low-Profile Quad Flat Package, 14 mm × 14 mm body, 0.5 mm lead pitch, exposed thermal pad, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52315ADFP#10, R5F52315ADLA#20 reduces footprint by >70% but increases assembly complexity, while R5F52316ADFP#30 provides double flash capacity with zero layout change-making it ideal for scalable product families.

Availability

R5F52315ADFP#10 is available at Aetrix Electronics and suitable for industrial HMI, smart sensor gateways, and secure appliance controllers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for R5F52315ADFP#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX231 Group, which includes R5F52315ADFP#10, is designed for cost-sensitive industrial and consumer applications demanding high integration, functional safety support, and robust touch/HMI capabilities without CAN or SD card interfaces.

FAQ

What is the maximum operating frequency and core type of the R5F52315ADFP#10?

The R5F52315ADFP#10 features a 32-bit RXv2 CPU core with a maximum operating frequency of 54 MHz, delivering 88.56 DMIPS performance. It uses a Harvard architecture with a 5-stage pipeline and variable-length instructions, enabling efficient code density and deterministic real-time execution. The R5F52315ADFP#10 achieves this speed across its full 1.8–5.5 V supply range, with no wait states on SRAM access at 54 MHz.

Does the R5F52315ADFP#10 include CAN or SD host interface functionality?

No, the R5F52315ADFP#10 does not include CAN or SD host interface (SDHI) functionality. As confirmed in Table 1.2 of the datasheet for the RX231 Group, these modules are explicitly marked "Not supported" for all 100-pin, 64-pin, and 48-pin packages-including the PLQP0100KB-B package used by R5F52315ADFP#10. This distinguishes it from the RX230 Group variants, which do support CAN and SDHI in select configurations.

What touch sensing capabilities does the R5F52315ADFP#10 provide?

The R5F52315ADFP#10 integrates a Capacitive Touch Sensing Unit (CTSU) supporting up to 24 self-capacitance keys using dedicated CTSU_RX pins, or up to 144 mutual-capacitance keys in matrix configuration. It includes hardware-accelerated noise rejection, auto-calibration, and proximity detection-enabling robust touch operation in noisy industrial environments without external ICs. The R5F52315ADFP#10's CTSU is fully compatible with Renesas' Smart Configurator and e2 studio touch middleware.

Is the R5F52315ADFP#10 qualified for IEC60730 functional safety compliance?

Yes, the R5F52315ADFP#10 includes dedicated hardware features to support IEC60730 Class B compliance, including self-diagnostic A/D converter disconnection detection, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) validation, and RAM test assistance via the Data Operation Circuit (DOC). These are documented in the "Useful functions for IEC60730 compliance" section of the R5F52315ADFP#10 datasheet.

What is the package type and pin count of the R5F52315ADFP#10?

The R5F52315ADFP#10 uses the PLQP0100KB-B package: a 100-pin Low-Profile Quad Flat Package with 14 mm × 14 mm body size, 0.5 mm lead pitch, and exposed thermal pad. This package is RoHS compliant and optimized for standard surface-mount assembly processes. Pin assignments-including VCC/VSS distribution, USB, CTSU, and ADC channels-are fully defined in the R5F52315ADFP#10 datasheet Section 6 (Pin Functions).