Renesas R5F52315ADFM#30

Overview

R5F52315ADFM#30 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, capacitive touch sensing unit (10 channels), and hardware AES encryption (TSIP-Lite). It operates across −40 to +85°C and targets industrial HMI, sensor gateway, and battery-powered control systems requiring real-time responsiveness and secure firmware execution.

For engineers reviewing the R5F52315ADFM#30 datasheet, R5F52315ADFM#30 pinout, R5F52315ADFM#30 application, or R5F52315ADFM#30 equivalent, this MCU delivers verified 88.56 DMIPS performance, IEEE 754-compliant FPU, low-power timer for software standby operation, ELC-driven event-triggered peripheral coordination, and IEC60730 self-diagnostic support for functional safety-critical designs.

Technical Context

The R5F52315ADFM#30 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates a single-precision FPU compliant to IEEE754 and a 32-bit × 32-bit multiplier with 64-bit result, supporting deterministic floating-point math in real-time control loops.

Its clock system includes main (1–20 MHz), sub-clock (32.768 kHz), and on-chip oscillators, with PLLs generating 54 MHz system clock and 48 MHz USB clock. The ELC enables direct inter-module triggering without CPU intervention-critical for low-latency sensor-to-actuator response in motor control and industrial automation.

Key Specifications

Pinout & Package

Package: PLQP0064KB-C - 64-pin LFQFP, 10 × 10 mm, 0.5 mm pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52315ADFM#30, R5F52315ADFP#30 offers full peripheral access at the cost of larger packaging, while R5F52316ADFM#30 trades CAN for SDHI and doubled flash-enabling field-upgradable firmware without external memory controllers.

Availability

R5F52315ADFM#30 is available at Aetrix Electronics and suitable for industrial HMI, sensor gateways, and battery-powered motor controllers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R5F52315ADFM#30 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 is a global semiconductor leader specializing in microcontrollers, analog, and power management ICs for automotive, industrial, and IoT applications.

The RX231 Group-including R5F52315ADFM#30-is designed for cost-sensitive industrial control and human-machine interface applications demanding real-time performance, functional safety compliance, and integrated security features.

FAQ

What is the maximum operating frequency and core type of the R5F52315ADFM#30?

The R5F52315ADFM#30 features a 32-bit RXv2 CPU core with a maximum operating frequency of 54 MHz, delivering 88.56 DMIPS performance. Its Harvard architecture with 5-stage pipeline and variable-length instruction set enables high code density and deterministic real-time execution. The R5F52315ADFM#30 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 R5F52315ADFM#30 support CAN communication?

No, the R5F52315ADFM#30 does not include the CAN module (RSCAN). According to Table 1.2 in the datasheet, CAN is only supported in the RX230 Group and specific RX231 packages (e.g., 100-pin variants), but explicitly excluded for the 64-pin PLQP0064KB-C package used by R5F52315ADFM#30. This part retains USB 2.0, SCI, I2C, RSPI, and SSI interfaces instead.

What is the flash and RAM capacity of the R5F52315ADFM#30?

The R5F52315ADFM#30 integrates 128 KB of on-chip flash memory and 32 KB of SRAM. Flash supports 1.8 V programming and includes background operation (BGO) for data flash writes during code execution. SRAM operates with zero wait states at 54 MHz, ensuring deterministic timing for real-time tasks. Both memories are accessible via the 4-Gbyte linear address space of the RXv2 core.

Which capacitive touch sensing configuration does the R5F52315ADFM#30 support?

The R5F52315ADFM#30 supports 10-channel mutual capacitance mode using its CTSU, as confirmed in Table 1.2 for 64-pin RX231 packages. It does not support the full 24-channel self-capacitance mode available in 100-pin variants. This configuration enables robust matrix-based touchpad or keypad implementations with built-in noise suppression, ideal for industrial HMI panels exposed to EMI.

Is the R5F52315ADFM#30 qualified for IEC60730 Class B compliance?

Yes, the R5F52315ADFM#30 includes dedicated hardware features for IEC60730 Class B compliance, including RAM test assistance via the DOC unit, ADC self-diagnostic and analog input disconnection detection, clock frequency accuracy measurement (CAC), and independent watchdog timer (IWDT) disconnection monitoring. These are documented in the "Useful functions for IEC60730 compliance" section of the datasheet and apply directly to the R5F52315ADFM#30.