Renesas R5F52318ADLA#20

Overview

R5F52318ADLA#20 from Renesas is a 32-bit RXv2 microcontroller with 54 MHz max operating frequency, 512 KB on-chip flash, 64 KB SRAM, and 8 KB data flash. It integrates a single-precision IEEE 754 FPU, 12-bit 24-channel ADC (0.83 µs conversion), dual 12-bit DACs, USB 2.0 full-speed host/function/OTG, CAN, SD host interface, capacitive touch sensing unit (24 keys), and TSIP-Lite encryption engine. It targets industrial HMI and secure embedded control applications requiring real-time performance and mixed-signal integration.

For engineers reviewing the R5F52318ADLA#20 datasheet, R5F52318ADLA#20 pinout, R5F52318ADLA#20 application, or R5F52318ADLA#20 equivalent, this MCU delivers verified 54 MHz deterministic execution, hardware-accelerated crypto (AES-128/256, GCM, CBC), integrated RTC with battery backup, and ELC-driven low-power peripheral coordination - all in a compact 5.5 × 5.5 mm TFLGA package.

Technical Context

The R5F52318ADLA#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- or big-endian data arrangement and includes an on-chip memory protection unit (MPU) and on-chip debugging circuit.

Its clock system features a main oscillator (1–20 MHz), sub-clock (32.768 kHz), PLL (4–12.5 MHz input), USB-dedicated PLL (4/6/8/12 MHz), and dedicated IWDT oscillator. System clock (ICLK) runs up to 54 MHz; peripheral clocks (PCLKA–PCLKD) are independently configurable up to 54 MHz for MTU2a and 32 MHz for most other modules.

Key Specifications

Pinout & Package

Package: 100-pin Thin Fine-Pitch Land Grid Array (TFLGA), PTLG0100KA-A, 5.5 × 5.5 mm body, 0.5 mm 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 R5F52318BDLA#20 and R5F52317ADLA#20, the R5F52318ADLA#20 offers optimal balance of memory capacity (512 KB flash), security (TSIP-Lite), and peripheral integration (USB/CAN/CTSU) without SDHI overhead - ideal for HMI and secure control where media interface is unnecessary.

Availability

R5F52318ADLA#20 is available at Aetrix Electronics and suitable for industrial HMI panels, secure IoT gateways, medical diagnostic devices, smart energy meters, and automotive body electronics requiring stable component supply and long-term lifecycle support.

Supply support for R5F52318ADLA#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 industrial, automotive, and enterprise applications.

The RX231 Group - including the R5F52318ADLA#20 - was designed for high-integration, low-power, and functionally safe embedded control in industrial automation, building management, and secure human-machine interfaces.

FAQ

What is the maximum operating frequency and CPU performance of the R5F52318ADLA#20?

The R5F52318ADLA#20 operates at a maximum system clock frequency of 54 MHz using its RXv2 CPU core, delivering 88.56 DMIPS of processing performance. Its 5-stage pipeline, variable-length instruction set, and on-chip FPU enable deterministic real-time execution for demanding applications like motor control and HMI rendering. The R5F52318ADLA#20 achieves this performance across its full 1.8–5.5 V supply range with no wait states in SRAM and optimized flash access.

Does the R5F52318ADLA#20 support USB 2.0 host, device, and OTG functionality?

Yes, the R5F52318ADLA#20 integrates a full-featured USB 2.0 host/function module compliant with USB 2.0 specification, supporting full-speed (12 Mbps) and low-speed (1.5 Mbps) modes, isochronous transfers, and Battery Charging Specification 1.2 (BC1.2). It operates as host, device, or OTG without external PHY, and includes an internal USB regulator enabling operation from VCC (4.0–5.5 V) without requiring VCC_USB external supply. This capability is fully implemented in the R5F52318ADLA#20.

What analog peripherals are included in the R5F52318ADLA#20?

The R5F52318ADLA#20 includes a 12-bit S12ADE analog-to-digital converter with 24 input channels and a minimum conversion time of 0.83 µs, two 12-bit R12DAA digital-to-analog converters, an on-chip temperature sensor (TEMPSA), and two comparator units (CMPBa) with window comparison capability. It also features a capacitive touch sensing unit (CTSU) supporting up to 24 self-capacitance keys. All analog functions are accessible in the R5F52318ADLA#20's 100-pin TFLGA package.

Is the R5F52318ADLA#20 qualified for functional safety standards such as IEC60730?

Yes, the R5F52318ADLA#20 includes hardware-assisted features specifically designed to support IEC60730 Class B compliance, including self-diagnostic functions for the A/D converter, clock frequency accuracy measurement circuit (CAC), independent watchdog timer (IWDT), and RAM test assistance via the data operation circuit (DOC). These capabilities are documented in the official R01DS0261EJ0120 datasheet and are present in the R5F52318ADLA#20 silicon revision.

What is the package type and pin count of the R5F52318ADLA#20?

The R5F52318ADLA#20 is packaged in a 100-pin Thin Fine-Pitch Land Grid Array (TFLGA) with part number PTLG0100KA-A, measuring 5.5 × 5.5 mm with 0.5 mm pitch and an exposed thermal pad. This compact, high-density package supports all integrated peripherals - including USB, CAN, SDHI (disabled), CTSU, and dual DACs - while enabling efficient thermal dissipation in space-constrained industrial and consumer designs. The R5F52318ADLA#20 uses this exact package configuration.