Renesas R5F56316CDBG#U0

Overview

R5F56316CDBG#U0 from Renesas is a 100 MHz 32-bit RX63N Group microcontroller featuring an integrated Ethernet MAC, single-precision IEEE-754 FPU, 165 DMIPS performance, 1.5 MB on-chip flash memory, and 128 KB SRAM. It operates from a 2.7–3.6 V supply, supports -40 to +85°C industrial temperature range, and targets networked embedded control applications such as industrial gateways and smart energy meters.

For engineers reviewing the R5F56316CDBG#U0 datasheet, R5F56316CDBG#U0 pinout, R5F56316CDBG#U0 application, or R5F56316CDBG#U0 equivalent, key selection criteria include Ethernet MAC support (MII/RMII), USB 2.0 host/function/OTG capability, CAN v2.0B compliance with 32 mailboxes, 21-channel 12-bit A/D converter with sample-and-hold, and hardware AES encryption via DEU module.

Technical Context

The R5F56316CDBG#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 a dedicated Ethernet DMA controller (EDMAC), dual USB 2.0 modules (host/function + function-only), and three independent CAN channels - all operating concurrently without CPU intervention.

Its clock system includes PLL-based 100 MHz ICLK generation, programmable peripheral clock division (PCLK up to 50 MHz), and independent low-power oscillators (LOCO/HOCO). The MCU supports real-time debugging via JTAG and two-wire FINE interfaces, and includes MPU for memory protection in safety-critical firmware deployments.

Key Specifications

Pinout & Package

Package: PLBG0176GA-A - 176-pin LFBGA, 13 × 13 mm, 0.8 mm pitch, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56316CDBG#U0, R5F563NDCDBG offers identical functionality at standard industrial qualification, while R5F563NECDBG extends flash capacity to 2 MB - both maintain full pin and software compatibility, making them drop-in alternatives for design flexibility or future-proofing.

Availability

R5F56316CDBG#U0 is available at Aetrix Electronics and suitable for industrial gateways, smart energy meters, PLC I/O modules, and building automation controllers requiring stable component supply and long-term lifecycle support.

Supply support for R5F56316CDBG#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX63N Group - including R5F56316CDBG#U0 - was designed for real-time, networked embedded systems demanding integrated Ethernet, USB, CAN, cryptographic acceleration, and industrial temperature resilience.

FAQ

What is the maximum operating frequency and core performance of the R5F56316CDBG#U0?

The R5F56316CDBG#U0 operates at a maximum frequency of 100 MHz using its 32-bit RX CPU core, delivering 165 DMIPS of processing performance. Its single-precision IEEE-754 floating-point unit enables efficient math-intensive tasks like sensor fusion or motor control algorithms. This performance level is sustained across the full -40 to +85°C industrial temperature range without derating.

Does the R5F56316CDBG#U0 include an Ethernet MAC, and what interface standards does it support?

Yes, the R5F56316CDBG#U0 includes a fully integrated IEEE 802.3-compliant Ethernet MAC supporting both MII and RMII physical layer interfaces. It operates at 10/100 Mbps in full- and half-duplex modes, includes flow control per IEEE 802.3x, and features a dedicated Ethernet DMA controller (EDMAC) with 2 KB transmit and receive FIFOs to minimize CPU overhead.

How much on-chip memory does the R5F56316CDBG#U0 provide, and what types are included?

The R5F56316CDBG#U0 integrates 1.5 MB of on-chip flash memory with zero wait states at 100 MHz, 128 KB of high-speed SRAM also with zero wait states, and 32 KB of reprogrammable data flash rated for 100,000 erase/write cycles. All memory blocks are accessible concurrently, supporting background programming and real-time execution.

What communication peripherals are integrated into the R5F56316CDBG#U0 besides Ethernet?

In addition to Ethernet, the R5F56316CDBG#U0 integrates USB 2.0 host/function/OTG (dual-port), three CAN 2.0B modules (32 mailboxes each), 13 SCI channels with SPI/I²C/smart-card modes, four I²C interfaces (one FM+), three RSPI units, one IEBus channel, and a parallel data capture unit (PDC). This breadth enables complex multi-protocol edge node designs.

Is hardware cryptographic acceleration available on the R5F56316CDBG#U0, and what algorithms does it support?

Yes, the R5F56316CDBG#U0 includes a dedicated Data Encryption Unit (DEU) supporting AES encryption and decryption with 128-, 192-, and 256-bit keys in ECB and CBC modes. This hardware engine operates independently of the CPU, enabling secure TLS handshake acceleration, encrypted firmware updates, and IPsec packet processing without performance penalty.