Renesas R5F56218BDFP#H0

Overview

R5F56218BDFP#H0 from Renesas is a 100 MHz, 32-bit RX CPU core microcontroller with single-precision IEEE-754 FPU, 512 KB flash, 96 KB SRAM, and 32 KB data flash. It integrates Ethernet MAC (10/100 Mbps), USB 2.0 Full-Speed Host/Function/OTG, CAN 2.0B (1 channel, 32 mailboxes), 12-bit × 8-channel ADC, dual 10-bit DACs, TFT-LCD controller, RTC, and up to 100 GPIO pins. It targets industrial HMI, networked gateway controllers, and embedded automation systems requiring real-time connectivity and deterministic timing.

For engineers reviewing the R5F56218BDFP#H0 datasheet, R5F56218BDFP#H0 pinout, R5F56218BDFP#H0 application, or R5F56218BDFP#H0 equivalent, key selection criteria include its LQFP100 package with 72 I/O pins, absence of SDRAM interface and EXDMA (per RX621 group specification), support for RMII/Ethernet PHY interfacing, and dual USB ports only in larger packages - this variant supports one USB port and full CAN functionality.

Technical Context

The R5F56218BDFP#H0 implements the RXv1 CPU core with 5-stage CISC-Harvard pipeline, delivering 165 DMIPS at 100 MHz. It features background JTAG debug with high-speed trace, Memory Protection Unit (MPU), and ultra-compact variable-length instruction encoding. Its interrupt controller supports 146 peripheral sources and 16 external IRQ pins with 16 priority levels.

System clocking uses an external 8–14 MHz crystal feeding an internal PLL for ICLK (up to 100 MHz), PCLK (up to 50 MHz), and BCLK (up to 50 MHz). The device includes two independent watchdog timers (8-bit WDT and 14-bit IWDT), low-voltage detection (LVD), and four low-power modes - including Deep Software Standby with RTC retention - operating from 2.7 V to 3.6 V across –40°C to +85°C.

Key Specifications

Pinout & Package

LQFP100 package (PLQP0100KB-A), 14 × 14 mm body, 0.5 mm pitch, 100 leads. Pin 1 marked by dot; exposed pad not present. Compatible with standard reflow profiles per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56218BDFP#H0, the R5F562N8BDFP#H0 adds SDRAM and EXDMA support but increases complexity and cost, while R5F56217BDFP#H0 retains full peripheral compatibility at lower memory capacity - making it optimal for firmware-constrained deployments.

Availability

R5F56218BDFP#H0 is available at Aetrix Electronics and suitable for industrial gateways, human-machine interfaces, networked energy meters, and programmable logic controller I/O modules requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability validation.

Supply support for R5F56218BDFP#H0 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 RX621 Group is designed for high-performance, real-time embedded control with integrated connectivity - targeting applications demanding deterministic timing, multi-protocol support, and functional safety readiness without external co-processors.

FAQ

What is the maximum operating frequency and CPU performance of the R5F56218BDFP#H0?

The R5F56218BDFP#H0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS using the 32-bit RXv1 CPU core. Its single-cycle 32 × 32 multiply and hardware floating-point unit enable real-time signal processing and control algorithms. This performance level is validated under worst-case voltage (2.7 V) and temperature (85°C) conditions per the official Renesas datasheet R01DS0052EJ0140.

Does the R5F56218BDFP#H0 support Ethernet, and what interface options are available?

Yes, the R5F56218BDFP#H0 integrates a 10/100 Mbps Ethernet MAC supporting both MII and RMII interfaces. In the LQFP100 package, only RMII is implemented due to pin count constraints - requiring a 50 MHz reference clock and four RMII data lines (RXD0/RXD1/TXD0/TXD1), TX_EN, RX_DV, CRS_DV, and COL. External PHY selection (e.g., LAN8720A) must match RMII timing and voltage levels.

How many USB ports does the R5F56218BDFP#H0 support, and what modes are enabled?

The R5F56218BDFP#H0 supports one USB 2.0 Full-Speed port (USB0) capable of Host, Function, and OTG operation. It includes an on-chip transceiver and 2 KB dedicated RAM buffer. Unlike larger-package RX62N variants, this LQFP100 device does not implement USB1 - confirmed in Table 1.2 of the datasheet, which shows USB port count as "O" for RX621 group regardless of package.

What analog peripherals are integrated into the R5F56218BDFP#H0, and how are they configured?

The R5F56218BDFP#H0 integrates a 12-bit × 8-channel ADC with single sample-and-hold, two independent 10-bit DACs, and hardware CRC calculation. The ADC supports scan mode, external trigger start, and conversion time of 1.0 µs at 50 MHz PCLK. DAC outputs range from 0 V to VREFH (2.7–3.6 V), and both DACs operate simultaneously with programmable update timing - enabling precise analog waveform generation for sensor calibration or actuator control.

Is the R5F56218BDFP#H0 pin-compatible with other members of the RX621 group, and what are the key package limitations?

Yes, all RX621 group devices in the LQFP100 package (e.g., R5F56217BDFP#H0, R5F56216BDFP#H0) share identical pinouts and mechanical dimensions with the R5F56218BDFP#H0. Key limitations include no SDRAM controller, no EXDMA, and only one USB port - features explicitly excluded from the RX621 group in Table 1.2. These omissions reduce pin count requirements and simplify PCB routing for cost-sensitive designs.