Renesas R5F565N4FGLK#20

Overview

R5F565N4FGLK#20 from Renesas is a 120-MHz 32-bit RXv2 microcontroller with single-precision IEEE-754 FPU, 240 DMIPS performance, 2 MB on-chip code flash (dual-bank), 640 KB SRAM, Ethernet MAC, CAN 2.0B (2 channels), SD host/slave interfaces, and hardware AES-128/192/256 encryption - deployed in industrial HMI, networked gateway, and secure IoT edge controllers.

For engineers reviewing the R5F565N4FGLK#20 datasheet, R5F565N4FGLK#20 pinout, R5F565N4FGLK#20 application, or R5F565N4FGLK#20 equivalent, key selection criteria include dual-bank flash for safe firmware updates, integrated Ethernet PHY support, 136 GPIO with 5-V tolerance, real-time clock with battery backup, and TSIP-based secure boot capability.

Technical Context

The R5F565N4FGLK#20 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates a dedicated 120-kHz IWDT oscillator, memory protection unit (MPU) with eight configurable regions, and Trusted Secure IP (TSIP) for cryptographic key management and secure boot verification.

Its clock system supports external crystal (8–24 MHz), internal HOCO (16/18/20 MHz), and PLL multiplication - delivering ICLK up to 120 MHz, PCLKA up to 120 MHz (for ETHERC, GLCDC, DRW2D), and PCLKB up to 60 MHz (for S12AD, CMT, TMR). The device uses PLQP0176KB-A package (176-pin LQFP, 24 × 24 mm, 0.5-mm pitch) with 136 general-purpose I/O pins.

Key Specifications

Pinout & Package

Package: PLQP0176KB-A - 176-pin Low-profile Quad Flat Package, 24 × 24 mm body, 0.5-mm lead pitch, exposed thermal pad, RoHS-compliant, rated for –40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F565N4FGLK#20, R5F565NEDFLK#20 offers identical functionality in a smaller package with reduced I/O count, while R5F566NEDFLK#20 delivers higher performance and updated security features at the cost of pin incompatibility and absence of integrated Ethernet PHY - making the original part optimal for cost-sensitive, PHY-integrated industrial gateways.

Availability

R5F565N4FGLK#20 is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateways, and networked building controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F565N4FGLK#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and enterprise markets.

The RX65N Group, including R5F565N4FGLK#20, was designed for secure, connected industrial equipment requiring real-time deterministic control, rich graphics, and hardware-enforced cybersecurity - targeting IEC 60730 Class B compliance and industrial Ethernet integration.

FAQ

What is the maximum operating frequency and CPU architecture of the R5F565N4FGLK#20?

The R5F565N4FGLK#20 operates at a maximum frequency of 120 MHz using the 32-bit RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instruction set. It achieves 240 DMIPS performance and includes single-precision IEEE-754 floating-point unit, two MAC units, and 32-bit multiplier with one-cycle execution. This architecture enables deterministic real-time response critical for industrial control applications where the R5F565N4FGLK#20 is deployed.

Does the R5F565N4FGLK#20 include an integrated Ethernet PHY?

Yes, the R5F565N4FGLK#20 integrates a full IEEE 802.3-compliant Ethernet PHY supporting both MII and RMII interfaces at 10/100 Mbps. It includes dedicated pins for ETH_MDC/MDIO, ETH_TXD0–3, ETH_RXD0–3, ETH_TX_EN, and ETH_CRS_DV. This eliminates the need for an external PHY IC in many designs, reducing BOM cost and PCB area - a key differentiator of the R5F565N4FGLK#20 within the RX65N family.

What security features does the R5F565N4FGLK#20 provide for firmware protection?

The R5F565N4FGLK#20 provides multiple hardware-enforced security layers: Trusted Secure IP (TSIP) for AES-128/192/256 encryption and secure key storage, Memory Protection Unit (MPU) with eight configurable regions, register write protection to prevent accidental overwrite, and CRC calculator for flash/data integrity validation. These features collectively enable secure boot, encrypted firmware updates, and runtime protection - essential for applications requiring IEC 60730 compliance where the R5F565N4FGLK#20 is commonly used.

How much SRAM and flash memory does the R5F565N4FGLK#20 have, and what is the flash architecture?

The R5F565N4FGLK#20 includes 640 KB of on-chip SRAM (256 KB main + 384 KB expansion) and 2 MB of code flash memory organized in a dual-bank structure. This architecture allows background programming - enabling one bank to execute code while the other is being erased or reprogrammed - and supports safe firmware updates without system interruption. The R5F565N4FGLK#20 also includes 32 KB of data flash rated for 100,000 erase/write cycles, ideal for parameter storage.

What is the package type and temperature grade of the R5F565N4FGLK#20?

The R5F565N4FGLK#20 uses the PLQP0176KB-A package: a 176-pin LQFP with 24 × 24 mm body size, 0.5-mm lead pitch, and exposed thermal pad. It is rated for industrial temperature range of –40°C to +85°C (D-version). This package provides 136 general-purpose I/O pins with 5-V tolerance, programmable pull-up resistors, and open-drain capability - making the R5F565N4FGLK#20 suitable for harsh industrial environments requiring robust signal interfacing.