Renesas R5F56317CDBG#U0

Overview

R5F56317CDBG#U0 from Renesas is a 100 MHz 32-bit RXv1 CPU-based microcontroller in the RX63N Group, featuring an integrated Ethernet MAC (10/100 Mbps), full-speed USB 2.0 host/function/OTG, 3-channel CAN, 12-bit and 10-bit A/D converters (21 + 8 channels), 2-channel 10-bit D/A, hardware AES encryption (DEU), and 128 KB on-chip SRAM. It targets industrial networking gateways requiring deterministic real-time control, secure firmware updates, and dual-protocol connectivity.

For engineers reviewing the R5F56317CDBG#U0 datasheet, R5F56317CDBG#U0 pinout, R5F56317CDBG#U0 application, or R5F56317CDBG#U0 equivalent, key selection criteria include Ethernet MAC support (vs. RX631), 176-pin LFBGA (PLBG0176GA-A) package compatibility, 100 MHz timing margin for IEC60730-compliant safety routines, and DEU-enabled secure boot implementation.

Technical Context

The R5F56317CDBG#U0 implements the RXv1 core with Harvard architecture, 5-stage pipeline, and IEEE-754 single-precision FPU delivering 165 DMIPS at 100 MHz. Its memory subsystem includes 768 KB flash (no wait states at 100 MHz), 128 KB SRAM, and 32 KB data flash rated for 100,000 erase/write cycles with background operation capability.

Peripheral integration centers on deterministic real-time I/O: MTU2 and TPU timers support PWM generation, input capture, and phase counting; the dedicated EDMAC offloads Ethernet frame processing; and the RIIC interface enables 1 Mbps I²C communication across four channels - one FM+ compliant.

Key Specifications

Pinout & Package

Package: PLBG0176GA-A - 176-pin Low-Profile Fine-Pitch Ball Grid Array, 13 mm × 13 mm body, 0.8 mm ball pitch, RoHS-compliant, lead-free solder compatible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F563NEDDBG, the R5F56317CDBG#U0 trades flash capacity for lower BOM cost and smaller code footprint, while retaining identical peripheral set and Ethernet capability; versus R5F56317CDFB, it adds essential network connectivity at the cost of BGA assembly complexity and higher thermal resistance.

Availability

R5F56317CDBG#U0 is available at Aetrix Electronics and suitable for industrial automation gateways, secure PLC modules, building management controllers, and medical telemetry interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F56317CDBG#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 R5F56317CDBG#U0, was designed for deterministic real-time industrial networking applications demanding integrated Ethernet, USB, CAN, security acceleration, and functional safety compliance.

FAQ

What is the maximum operating frequency and core architecture of the R5F56317CDBG#U0?

The R5F56317CDBG#U0 operates at a maximum frequency of 100 MHz using the 32-bit RXv1 CPU core with Harvard architecture, 5-stage pipeline, and single-precision IEEE-754 floating-point unit. It delivers 165 DMIPS performance and supports variable-length instructions for ultra-compact code density. The core includes memory protection unit (MPU), JTAG/FINE debugging interfaces, and fast interrupt response critical for real-time industrial control tasks executed by the R5F56317CDBG#U0.

Does the R5F56317CDBG#U0 include an Ethernet MAC, and what interface standards does it support?

Yes, the R5F56317CDBG#U0 integrates a full-featured Ethernet MAC supporting 10/100 Mbps operation in both full- and half-duplex modes. It complies with IEEE 802.3 and 802.3u standards and provides Media Independent Interface (MII) and Reduced MII (RMII) options. The dedicated EDMAC handles descriptor-based frame transfers with 2 KB TX/RX FIFOs, enabling low-CPU-load TCP/IP stack implementation - a defining feature distinguishing the R5F56317CDBG#U0 from RX631 Group devices.

What are the flash and SRAM capacities of the R5F56317CDBG#U0, and are they zero-wait-state at maximum frequency?

The R5F56317CDBG#U0 contains 768 KB of on-chip main flash memory and 128 KB of SRAM, both operating at zero wait states up to 100 MHz. Flash supports on-board programming and has 100,000-cycle endurance for its 32 KB data flash segment. This memory configuration ensures deterministic real-time execution for safety-critical routines in the R5F56317CDBG#U0, eliminating cache-related timing variability common in higher-end MCUs.

Which communication peripherals are integrated into the R5F56317CDBG#U0, and how many CAN channels does it support?

The R5F56317CDBG#U0 integrates Ethernet MAC, USB 2.0 full-speed host/function/OTG, 3-channel CAN (ISO11898-1 compliant, 32 mailboxes per channel), 13 SCI channels (with LIN/Smart Card modes), 4 I²C interfaces (one FM+), 3 RSPI channels, and 1 IEBus channel. Its three independent CAN modules enable concurrent multi-protocol vehicle or factory floor communication - a capability confirmed in the RX63N Group specification table and directly applicable to the R5F56317CDBG#U0.

What security and functional safety features does the R5F56317CDBG#U0 provide for industrial applications?

The R5F56317CDBG#U0 includes a hardware Data Encryption Unit (DEU) supporting AES-128/192/256 in ECB/CBC modes, CRC calculator with three polynomials, independent watchdog timer (IWDT) with dedicated oscillator, oscillation-stop detection, and A/D converter self-diagnostic functions - all aligned with IEC60730 Class B requirements. These features enable secure boot, encrypted firmware updates, and runtime safety monitoring without external components, making the R5F56317CDBG#U0 suitable for certified industrial control systems.