Renesas R5F52316CDFL#30

Overview

R5F52316CDFL#30 from Renesas is a 32-bit RXv2 microcontroller operating at up to 54 MHz (88.56 DMIPS), featuring 256 KB on-chip flash, 32 KB SRAM, 8 KB data flash, integrated FPU (IEEE 754 single-precision), and hardware encryption (TSIP-Lite AES-128/256). It supports USB 2.0 full-speed host/function/OTG, CAN, SD host interface, capacitive touch sensing (24 channels), 12-bit A/D (24 ch), 12-bit D/A (2 ch), RTC, and operates from 1.8–5.5 V across −40 to +85°C.

For engineers reviewing the R5F52316CDFL#30 datasheet, R5F52316CDFL#30 pinout, R5F52316CDFL#30 application, or R5F52316CDFL#30 equivalent, key selection considerations include its 48-pin LFQFP package (PLQP0048KB-B), absence of CAN and SDHI modules (per Table 1.3), presence of USB 2.0 OTG, dual 12-bit DACs, and TSIP-Lite security - critical for industrial HMI, smart sensor nodes, and secure embedded control designs requiring low-power operation with rich analog and connectivity peripherals.

Technical Context

The R5F52316CDFL#30 belongs to the RX231 Group and implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions. It integrates an IEEE 754-compliant FPU, memory protection unit (MPU), and event link controller (ELC) enabling interrupt-free peripheral coordination during CPU sleep.

Its clock system includes main (1–20 MHz), sub-clock (32.768 kHz), and on-chip oscillators, with PLL support for 54 MHz system clock and 48 MHz USB clock. Power management features three low-power modes, LPT timer, and voltage detection circuits (LVDAb) with multi-level thresholds - optimized for battery-backed real-time applications requiring deterministic timing and functional safety support per IEC60730.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (PLQP0048KB-B), 7 × 7 mm body, 0.5 mm pitch, exposed pad (thermal enhancement), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F52316ADFL#30, the R5F52316CDFL#30 trades data flash and RTC for identical core performance and USB/CTSU features at lower cost; versus R5F52306ADFL#30, it prioritizes USB/OTG and touch over CAN, making it optimal for human-facing edge devices rather than fieldbus gateways.

Availability

R5F52316CDFL#30 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, secure embedded gateways, and motor control interface modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F52316CDFL#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX231 Group - including R5F52316CDFL#30 - was designed for cost-sensitive, high-integration embedded applications demanding USB connectivity, capacitive touch, security, and real-time performance in compact 48-pin packages.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52316CDFL#30?

The R5F52316CDFL#30 operates at a maximum system clock frequency of 54 MHz, delivering 88.56 DMIPS of processing performance. Its RXv2 CPU core supports single-cycle instruction execution, IEEE 754-compliant floating-point operations, and DSP instructions - enabling efficient real-time control and signal processing tasks without external co-processors. This performance level is sustained across its full 1.8–5.5 V supply range.

Does the R5F52316CDFL#30 include USB 2.0 functionality, and what modes does it support?

Yes, the R5F52316CDFL#30 integrates a full-featured USB 2.0 host/function/OTG module compliant with USB 2.0 specification. It supports full-speed (12 Mbps) and low-speed (1.5 Mbps) transfer rates, isochronous transfers, and Battery Charging Specification v1.2 (BC1.2). The internal USB transceiver and VBUS sensing enable seamless role switching between host and peripheral modes without external PHY components.

What analog peripherals are integrated into the R5F52316CDFL#30?

The R5F52316CDFL#30 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 analog comparators (CMPBa). It also includes a capacitive touch sensing unit (CTSU) supporting up to 24 self-capacitance channels - all accessible within its 48-pin LFQFP footprint.

Is the R5F52316CDFL#30 suitable for applications requiring functional safety certification?

Yes, the R5F52316CDFL#30 includes multiple IEC60730-compliant safety assistance functions: self-diagnostic A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT) with dedicated oscillator, RAM test support via DOC, and analog input disconnection detection. These features reduce software validation effort for Class B safety compliance in industrial control and appliance applications.

What security features does the R5F52316CDFL#30 provide through TSIP-Lite?

The R5F52316CDFL#30 incorporates TSIP-Lite, a hardware security engine offering AES-128 and AES-256 encryption in ECB, CBC, GCM, and other modes; true random number generation; and secure key management that prevents unauthorized access or extraction. It supports cryptographic operations without exposing keys in software memory - enabling secure boot, firmware authentication, and encrypted data storage directly in the R5F52316CDFL#30.