Renesas R5F56216BDLD#U0

Overview

R5F56216BDLD#U0 from Renesas is a 32-bit RX CPU-based microcontroller operating at 100 MHz, delivering 165 DMIPS with single-precision IEEE-754 floating-point unit, 256 KB on-chip flash, 64 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 ADC (8-channel), dual 10-bit DACs, TFT-LCD controller up to WQVGA, and RTC - targeting industrial HMI, networked gateway, and embedded control applications.

For engineers reviewing the R5F56216BDLD#U0 datasheet, R5F56216BDLD#U0 pinout, R5F56216BDLD#U0 application, or R5F56216BDLD#U0 equivalent, key selection considerations include its TFLGA85 package (85-pin, 7 × 7 mm, 0.65 mm pitch), absence of SDRAM controller and EXDMA, support for only one USB port and one I²C channel, and compatibility with Renesas' e² studio and CS+ development tools.

Technical Context

The R5F56216BDLD#U0 implements the 32-bit RXv1 CPU core with 5-stage CISC-Harvard pipeline, supporting little-endian or big-endian data arrangement and memory protection unit (MPU). Its clock system includes external crystal (8–14 MHz) + PLL for 100 MHz ICLK, subclock (32 kHz) for RTC, and LOCO (125 kHz) for IWDT.

It features four low-power modes (Sleep, All-module Clock Stop, Software Standby, Deep Software Standby), 480 µA/MHz Run Mode, and hardware-accelerated peripherals including DMA (4 channels), DTC, CRC calculator (three polynomials), and programmable pulse generators. The device lacks Ethernet PHY, SDRAM interface, and EXDMA - confirmed exclusions for the 85-pin TFLGA variant per Table 1.2.

Key Specifications

Pinout & Package

TFLGA85 (85-pin, 7 × 7 mm, 0.65 mm pitch) package with exposed thermal pad; pin functions defined in Figure 1.5 and Table 1.4–1.8 of R01DS0052EJ0140. This variant excludes SDRAM controller, EXDMA, port output enable (POE), and second I²C channel versus larger packages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56216BDLD#U0, R5F56216BDFP offers expanded memory interfacing at the cost of larger PCB area, while R5F56217BDLD provides 128 KB more Flash without changing layout - both retain identical peripheral functionality and software compatibility within the RX621 group.

Availability

R5F56216BDLD#U0 is available at Aetrix Electronics and suitable for industrial HMI, smart gateway, and networked energy meter applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for R5F56216BDLD#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX621 Group targets cost-sensitive industrial control and human-machine interface applications, emphasizing high CPU performance, rich analog integration, and low-power operation in compact packages like TFLGA85.

FAQ

What is the maximum operating frequency and CPU performance of the R5F56216BDLD#U0?

The R5F56216BDLD#U0 operates at a maximum frequency of 100 MHz and delivers 165 DMIPS using the 32-bit RX CPU core. Its single-precision IEEE-754 floating-point unit accelerates mathematical operations critical for real-time control algorithms. This performance level is sustained across the full industrial temperature range (–40°C to +85°C) with no wait states on Flash or SRAM access.

Does the R5F56216BDLD#U0 support Ethernet connectivity, and what interface options are available?

The R5F56216BDLD#U0 includes an Ethernet MAC controller compliant with IEEE 802.3 (10/100 Mbps), but it does not integrate a PHY. It supports RMII or MII interface to external PHYs, with dedicated 2-Kbyte TX/RX FIFOs and descriptor-based DMA. Note that the TFLGA85 package omits the SDRAM controller required for large buffer implementations, limiting Ethernet throughput in memory-constrained configurations.

How many USB ports does the R5F56216BDLD#U0 support, and what modes are enabled?

The R5F56216BDLD#U0 supports one USB 2.0 Full-Speed port (12 Mbps) with integrated transceiver and 2-Kbyte on-chip RAM buffer. It operates in Host, Function, and OTG modes, supporting Control, Interrupt, Bulk, and Isochronous transfer types across 10 endpoints. Unlike 176-pin RX62N variants, the R5F56216BDLD#U0 does not support dual USB ports.

What are the ADC and DAC capabilities of the R5F56216BDLD#U0?

The R5F56216BDLD#U0 integrates a 12-bit ADC with eight input channels (AN0–AN7), achieving 1.0 µs conversion time at 50 MHz PCLK, plus two independent 10-bit DAC channels. The ADC supports single/scan modes, software/external/timer-triggered conversions, and sample-and-hold. DAC outputs range from 0 V to VREFH (2.7–3.6 V), suitable for analog actuator control or calibration references.

Is the R5F56216BDLD#U0 pin-compatible with other RX621 Group MCUs in the same package?

Yes, the R5F56216BDLD#U0 is pin-compatible with other RX621 Group devices in the TFLGA85 package (e.g., R5F56217BDLD, R5F56218BDLD), sharing identical pin assignments, electrical characteristics, and peripheral mappings. Firmware developed for one can be reused across the family with only Flash/RAM size adjustments - verified in Renesas' R01DS0052EJ0140 datasheet Section 1.2 and Figure 1.5.