Renesas R5F52315ADND#20

Overview

R5F52315ADND#20 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 128 KB on-chip flash, 32 KB SRAM, and 8 KB data flash. It integrates a single-precision FPU (IEEE 754), 12-bit 24-channel ADC (0.83 µs conversion), dual 12-bit DACs, USB 2.0 full-speed host/function/OTG, CAN 2.0B, and capacitive touch sensing unit - deployed in industrial HMI and smart sensor nodes requiring deterministic real-time control and secure firmware execution.

For engineers reviewing the R5F52315ADND#20 datasheet, R5F52315ADND#20 pinout, R5F52315ADND#20 application, or R5F52315ADND#20 equivalent, this MCU delivers verified 54 MHz timing accuracy via CAC, hardware-accelerated AES-128/256 encryption (TSIP-Lite), and ELC-driven low-power peripheral coordination - critical for IEC 60730-compliant appliance controllers and battery-backed RTC systems.

Technical Context

The R5F52315ADND#20 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions, achieving 88.56 DMIPS at 54 MHz. It supports little-endian or big-endian data arrangement and includes an on-chip 32-bit multiplier, 32-bit divider (2-cycle min), barrel shifter, and MPU for memory protection.

Its clock system combines main (1–20 MHz), sub-clock (32.768 kHz), and on-chip oscillators (low/high-speed), with dedicated PLLs for system (54 MHz), USB (48 MHz), and IWDT clocks. The ELC enables direct event-triggered peripheral operation without CPU intervention - essential for ultra-low-latency sensor-to-actuator response in closed-loop motor control.

Key Specifications

Pinout & Package

Packaged in 64-pin HWQFN (PWQN0064KC-A), 9 × 9 mm, 0.5 mm pitch, with exposed thermal pad. Pinout validated per Renesas R01DS0261EJ0120 Rev.1.20, Table 1.2 and Figure 1.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52315ADND#20, R5F52315ADFM#30 offers identical functionality in a larger QFP package better suited for prototyping, while R5F52316ADND#U0 trades CAN/SDHI for doubled memory - making the original optimal for compact, CAN-connected industrial nodes requiring balanced resource allocation.

Availability

R5F52315ADND#20 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, and secure IoT sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F52315ADND#20 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 solutions for automotive, industrial, and IoT markets.

The RX231 Group - including R5F52315ADND#20 - was designed for cost-sensitive, safety-aware industrial equipment requiring real-time performance, integrated security, and rich analog/mixed-signal integration in compact packages.

FAQ

What is the maximum operating frequency and core type of the R5F52315ADND#20?

The R5F52315ADND#20 operates at a maximum frequency of 54 MHz using the 32-bit RXv2 CPU core. This core features a 5-stage pipeline, variable-length instruction set, and achieves 88.56 DMIPS at full speed. Its architecture supports both little-endian and big-endian data arrangements, and includes an on-chip memory protection unit (MPU) for robust system partitioning. The R5F52315ADND#20 uses this performance headroom for deterministic real-time tasks such as motor control and capacitive touch processing.

Does the R5F52315ADND#20 include hardware encryption capabilities?

Yes, the R5F52315ADND#20 integrates TSIP-Lite - a trusted secure IP module supporting AES-128 and AES-256 encryption in ECB, CBC, and GCM modes, along with a true random number generator and protected key storage. This hardware acceleration enables secure boot, firmware authentication, and encrypted data logging without burdening the CPU. The R5F52315ADND#20 leverages TSIP-Lite to meet IEC 60730 Class B requirements for appliance safety certification.

What analog peripherals are integrated into the R5F52315ADND#20?

The R5F52315ADND#20 integrates a 12-bit S12ADE analog-to-digital converter with 24 input channels and 0.83 µs minimum conversion time, two 12-bit R12DAA digital-to-analog converters, a temperature sensor (TEMPSA), and two comparator units (CMPBa). It also includes a capacitive touch sensing unit (CTSU) supporting up to 24 self-capacitance keys. These peripherals are directly accessible by the CPU and coordinated via the Event Link Controller (ELC), enabling synchronized sampling and actuation - all within the R5F52315ADND#20's single-chip solution.

Which communication interfaces does the R5F52315ADND#20 support?

The R5F52315ADND#20 supports USB 2.0 full-speed host/function/OTG (12 Mbps), CAN 2.0B (1 Mbps), seven serial communication interfaces (SCI), one I²C bus interface (RIIC), one serial peripheral interface (RSPI), one serial sound interface (SSI), and one SD host interface (SDHI). It also includes IrDA support via SCI5 and optional LIN protocol handling. All interfaces are mapped to dedicated pins in the PWQN0064KC-A package and managed through the Multi-function Pin Controller (MPC) - ensuring flexible signal routing in the R5F52315ADND#20 design.

What is the operating temperature range and package type of the R5F52315ADND#20?

The R5F52315ADND#20 is rated for −40 to +85°C (D version) and housed in a 64-pin HWQFN package (PWQN0064KC-A), measuring 9 × 9 mm with 0.5 mm pitch and an exposed thermal pad. This compact, thermally enhanced package supports high-density PCB layouts and efficient heat dissipation in space-constrained industrial enclosures - a key mechanical specification distinguishing the R5F52315ADND#20 from larger QFP or TFLGA variants in the RX231 family.