Renesas R5F56316CDLJ#U0

Overview

R5F56316CDLJ#U0 from Renesas is a 100 MHz 32-bit RX63N Group microcontroller with integrated Ethernet MAC, single-precision IEEE-754 FPU, 165 DMIPS performance, 1.5 MB on-chip flash, and 128 KB SRAM. It operates from a 2.7–3.6 V supply, supports -40 to +85°C temperature range, and targets industrial networking and embedded control applications requiring real-time communication and deterministic timing.

For engineers reviewing the R5F56316CDLJ#U0 datasheet, R5F56316CDLJ#U0 pinout, R5F56316CDLJ#U0 application, or R5F56316CDLJ#U0 equivalent, this MCU delivers verified Ethernet/USB/CAN connectivity, hardware-accelerated AES encryption, 12-bit A/D conversion (21 channels), and low-power operation down to 500 μA/MHz - critical for secure, connected edge devices.

Technical Context

The R5F56316CDLJ#U0 implements the 32-bit RX CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instructions enabling ultra-compact code density. It integrates dedicated peripherals including an Ethernet controller (MII/RMII), USB 2.0 host/function/OTG module, and three CAN modules compliant with ISO11898-1.

Its memory subsystem includes 1.5 MB of no-wait-state flash (100 MHz operation), 128 KB SRAM, and 32 KB reprogrammable data flash (100,000 erase/write cycles). Clock management supports external crystal (4–16 MHz) plus internal PLL, HOCO (50 MHz), and LOCO (125 kHz) oscillators with independent domain division for ICLK, PCLK, FCLK, and BCLK.

Key Specifications

Pinout & Package

Package: PTLG0100JA-A - 100-pin TFLGA, 7 × 7 mm, 0.65-mm pitch, 5-V tolerant I/O (17 pins), open-drain capability, and pull-up resistors on all general-purpose ports.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56316CDLJ#U0, R5F56318CDLJ#U0 offers extended flash capacity without sacrificing performance or features, while R5F56306CDFP#U0 trades Ethernet capability for lower cost and smaller code footprint - enabling tiered product positioning across networking and standalone use cases.

Availability

R5F56316CDLJ#U0 is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and secure edge computing applications requiring stable component supply, long lifecycle support, and guaranteed traceability.

Supply support for R5F56316CDLJ#U0 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 RX63N Group, which includes R5F56316CDLJ#U0, was designed for high-performance, secure, and networked embedded applications - integrating Ethernet, USB, CAN, crypto acceleration, and functional safety features in a single chip.

FAQ

What is the maximum operating frequency and core architecture of the R5F56316CDLJ#U0?

The R5F56316CDLJ#U0 operates at a maximum frequency of 100 MHz and uses the 32-bit RX CPU core with CISC Harvard architecture, 5-stage pipeline, and variable-length instruction set. This architecture delivers 165 DMIPS performance and supports ultra-compact code density, making it ideal for resource-constrained real-time applications where both speed and memory efficiency are critical. The R5F56316CDLJ#U0 also includes a single-precision IEEE-754 floating-point unit for accelerated mathematical computation.

Does the R5F56316CDLJ#U0 include an Ethernet MAC, and what interfaces does it support?

Yes, the R5F56316CDLJ#U0 includes a fully integrated IEEE 802.3-compliant Ethernet MAC supporting both 10 Mbps and 100 Mbps operation in full- and half-duplex modes. It supports MII (Media Independent Interface) and RMII (Reduced MII) physical layer interfaces, enabling flexible PHY selection. Additional features include flow control per IEEE 802.3x, Magic Packet™ wake-on-LAN detection, and descriptor-based DMA (EDMAC) to offload packet processing from the CPU - all confirmed in the R5F56316CDLJ#U0 datasheet and functional specification.

What are the memory resources available on the R5F56316CDLJ#U0?

The R5F56316CDLJ#U0 integrates 1.5 MB of on-chip flash memory with zero wait states at 100 MHz, 128 KB of zero-wait-state SRAM for instructions and data, and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. The flash supports on-board programming via multiple methods, and the SRAM includes backup capability in deep software standby mode. These memory resources are fixed for the R5F56316CDLJ#U0 and verified in Renesas' official documentation.

Is the R5F56316CDLJ#U0 suitable for functional safety applications such as IEC 60730 compliance?

Yes, the R5F56316CDLJ#U0 includes multiple hardware features supporting IEC 60730 Class B compliance, including oscillation-stoppage detection, CRC calculator, independent watchdog timer (IWDT), self-diagnostic function for the A/D converter, and memory protection unit (MPU). These capabilities are explicitly documented in the R5F56316CDLJ#U0 datasheet and enable robust fault detection and recovery in safety-critical embedded control systems.

What package type and pin count does the R5F56316CDLJ#U0 use?

The R5F56316CDLJ#U0 is packaged in a 100-pin TFLGA (Thin Fine-Pitch Land Grid Array) with part number PTLG0100JA-A - measuring 7 × 7 mm with 0.65-mm pitch. It provides 78 general-purpose I/O pins, 17 of which are 5-V tolerant, along with dedicated Ethernet, USB, CAN, and analog interface pins. This package is confirmed in Table 1.2 and the "List of Products" section of the R5F56316CDLJ#U0 datasheet.