Renesas R5F56218BDBG#U0

Overview

R5F56218BDBG from Renesas is a 32-bit RX CPU-based microcontroller delivering 165 DMIPS at 100 MHz, featuring single-precision IEEE-754 FPU, 512 KB flash, 96 KB SRAM, 32 KB data flash, Ethernet MAC (10/100 Mbps), USB 2.0 Full-Speed Host/Function/OTG, CAN 2.0B (1 channel, 32 mailboxes), 12-bit ADC (8 ch), dual 10-bit DAC, and TFT-LCD controller - deployed in industrial HMI and networked gateway applications.

For engineers reviewing the R5F56218BDBG datasheet, R5F56218BDBG pinout, R5F56218BDBG application, or R5F56218BDBG equivalent, key selection criteria include its LFBGA176 package with 176-pin I/O mapping, integrated Ethernet and USB PHY support, real-time clock with calendar function, four low-power modes including Deep Software Standby with RTC retention, and MPU-enforced memory protection for safety-critical firmware.

Technical Context

The R5F56218BDBG implements the CISC-Harvard RX621 Group architecture with 5-stage pipeline, variable-length instructions, and background JTAG debug with high-speed trace. It integrates a Memory Protection Unit (MPU) and supports little-endian or big-endian data arrangement per memory area.

Its system clocking uses an external 8–14 MHz crystal feeding an internal PLL to generate 100 MHz ICLK, 50 MHz PCLK, and 50 MHz BCLK; subclock oscillator (32 kHz) drives RTC, while LOCO (125 kHz) serves IWDT. The MCU supports SDRAM interface (128 MB area) and eight independent chip-select areas (16 MB each).

Key Specifications

Pinout & Package

LFBGA176 package (PLBG0176GA-A), 13 mm × 13 mm, 0.8 mm pitch, 176-ball array with exposed thermal pad. Pin functions defined per Figure 1.3 and Table 1.4 of R01DS0052EJ0140 Rev.1.40.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F562N8BDBG, the R5F56218BDBG omits SDRAM and EXDMA to reduce complexity and cost while retaining full Ethernet, USB, CAN, and LCD capabilities; versus R5F566TEBDFB, it trades motor-control-specific peripherals for comprehensive connectivity - making it optimal for networked embedded gateways.

Availability

R5F56218BDBG is available at Aetrix Electronics and suitable for industrial HMI panels, building automation gateways, medical diagnostic devices, and smart energy meters requiring stable component supply across multi-year production cycles.

Supply support for R5F56218BDBG 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 mid-range industrial and networked embedded applications, emphasizing integrated connectivity (Ethernet, USB, CAN), real-time performance, and functional safety readiness through MPU and robust peripheral sets.

FAQ

What is the maximum operating frequency and CPU performance of the R5F56218BDBG?

The R5F56218BDBG operates at a maximum frequency of 100 MHz and delivers 165 DMIPS. Its 32-bit RX CPU includes a single-precision IEEE-754 floating-point unit, 32 × 32 → 64-bit accumulator, and mult/divide unit enabling 32 × 32 multiply in one CPU clock cycle. These metrics are confirmed in the R01DS0052EJ0140 datasheet Section 1.1 and Table 1.1.

Does the R5F56218BDBG support Ethernet and USB simultaneously?

Yes, the R5F56218BDBG supports concurrent Ethernet (10/100 Mbps, MII/RMII) and dual USB 2.0 Full-Speed interfaces (Host/Function/OTG). Each has dedicated DMA controllers - EDMAC for Ethernet and UDC for USB - ensuring zero CPU overhead during packet transfers. This capability is documented in Section 1.1 "Communication Function" of R01DS0052EJ0140.

What package type and pin count does the R5F56218BDBG use?

The R5F56218BDBG uses the LFBGA176 package (PLBG0176GA-A), a 13 mm × 13 mm body with 0.8 mm ball pitch and 176 I/O balls. Pin assignments are fully detailed in Figure 1.3 and Table 1.4 of the R01DS0052EJ0140 datasheet, confirming 126 GPIO plus dedicated power, clock, and peripheral interface pins.

How much flash, SRAM, and data flash memory does the R5F56218BDBG include?

The R5F56218BDBG integrates 512 KB of main flash memory (zero wait states at 100 MHz), 96 KB of SRAM (with backup retention in Deep Software Standby), and 32 KB of data flash rated for 30,000 erase cycles. These values are explicitly listed in Table 1.3 (List of Products) and Section 1.1 "Memory" of R01DS0052EJ0140 Rev.1.40.

Is the R5F56218BDBG pin-compatible with other RX62N or RX621 group members?

No, the R5F56218BDBG is not pin-compatible with RX62N group parts like R5F562N8BDBG due to differing peripheral sets - specifically, RX62N includes SDRAM and EXDMA controllers absent in RX621. Within the RX621 group, all 176-pin LFBGA variants (e.g., R5F56217BDBG, R5F56216BDBG) share identical pinouts and footprint, enabling scalable memory configuration without PCB redesign.