Renesas R5F52316CDNE#20

Overview

R5F52316CDNE#20 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 256 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 (24 keys), and TSIP-Lite encryption engine. It operates across −40 to +85°C and targets industrial HMI, smart sensor nodes, and embedded control systems requiring real-time performance, secure firmware, and mixed-signal integration.

For engineers reviewing the R5F52316CDNE#20 datasheet, R5F52316CDNE#20 pinout, R5F52316CDNE#20 application, or R5F52316CDNE#20 equivalent, this MCU delivers verified 88.56 DMIPS at 54 MHz, IEEE 754-compliant FPU, background operation for 8 KB data flash, ELC-driven event-triggered peripheral coordination, and IEC60730-ready self-test functions for A/D, IWDT, and clock accuracy measurement.

Technical Context

The R5F52316CDNE#20 implements the RXv2 CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions-enabling ultra-compact code and single-cycle instruction execution at 54 MHz. It integrates an on-chip FPU compliant with IEEE 754 single-precision format and a 32-bit hardware divider with two-cycle minimum latency.

Its peripheral subsystem includes a 6-channel MTU2 timer supporting complementary PWM and phase counting, a 6-channel TPU for input capture/output compare, four-channel DMAC with software/external/interrupt activation, and ELC enabling direct inter-module triggering without CPU intervention-critical for low-latency deterministic response in motor control and power conversion.

Key Specifications

Pinout & Package

PWQN0048KB-A is a 48-pin HWQFN package (7 × 7 mm, 0.5 mm pitch) with exposed thermal pad, rated for −40 to +85°C operation. Pinout conforms to RX231 Group 48-pin configuration per Table 1.2 of R01DS0261EJ0120 Rev.1.20.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52316ADNE#U0, R5F52316CDNE#20 removes data flash to lower cost and simplify qualification for fixed-function deployments; versus R5F52306ADNE#U0, it adds USB, CAN, and CTSU-enabling richer connectivity and HMI at identical footprint and memory size.

Availability

R5F52316CDNE#20 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, motor control gateways, and secure embedded appliances requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F52316CDNE#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX231 Group-including R5F52316CDNE#20-is designed for high-integrity industrial control applications demanding real-time performance, functional safety (IEC60730), secure firmware, and rich analog/mixed-signal integration in compact packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52316CDNE#20?

The R5F52316CDNE#20 operates at a maximum system clock frequency of 54 MHz. Its RXv2 CPU core delivers 88.56 DMIPS at this speed, supported by a 5-stage pipeline, variable-length instructions, and single-cycle execution for most operations. This performance enables real-time control tasks such as motor commutation, fast A/D sampling, and USB protocol stack handling without external acceleration.

Does the R5F52316CDNE#20 include on-chip data flash memory?

No, the R5F52316CDNE#20 does not include on-chip data flash memory. As confirmed in Table 1.3 of R01DS0261EJ0120 Rev.1.20, the "C" suffix denotes omission of the 8 KB data flash present in "A"-suffix variants like R5F52316ADNE#U0. All other memory resources-including 256 KB code flash and 32 KB SRAM-remain identical.

Which communication interfaces are supported by the R5F52316CDNE#20?

The R5F52316CDNE#20 supports USB 2.0 full-speed host/function/OTG (12 Mbps), CAN 2.0B (1 Mbps), six Serial Communications Interfaces (SCI), one I²C bus interface (RIIC), one Serial Peripheral Interface (RSPI), one Serial Sound Interface (SSI), and one SD Host Interface (SDHI). These are fully implemented in the 48-pin HWQFN package per RX231 Group specifications.

What is the package type and thermal specification for the R5F52316CDNE#20?

The R5F52316CDNE#20 uses the PWQN0048KB-A package: a 48-pin HWQFN measuring 7 × 7 mm with 0.5 mm pitch and an exposed thermal pad. It is rated for operation from −40 to +85°C (D version), making it suitable for industrial environments where ambient temperatures exceed commercial-grade limits.

How does the R5F52316CDNE#20 support functional safety standards like IEC60730?

The R5F52316CDNE#20 includes built-in IEC60730 compliance features: RAM test assistance via DOC, A/D converter self-diagnostic and analog input disconnection detection, independent watchdog timer (IWDT) with dedicated low-speed oscillator, and clock frequency accuracy measurement circuit (CAC). These allow Class B safety certification without external monitoring hardware.