Renesas R5F56108WDBG#U0

Overview

R5F56108WDBG#U0 from Renesas is a 32-bit RX610 Group MCU featuring a 100 MHz RX CPU core with single-precision FPU, 2 Mbytes flash, 128 Kbytes RAM, and 32 Kbytes data flash. It integrates dual 10-bit A/D converters (4 channels each), dual 10-bit D/A converters, seven SCI interfaces, two I²C buses, and 117 GPIOs in a 176-pin LFBGA package-targeted for real-time control in office automation equipment.

For engineers reviewing the R5F56108WDBG#U0 datasheet, R5F56108WDBG#U0 pinout, R5F56108WDBG#U0 application, or R5F56108WDBG#U0 equivalent, key selection criteria include its 100 MHz deterministic execution, IEEE 754-compliant FPU, external bus interface supporting up to 128 Mbytes address space, and industrial temperature range (−40°C to +85°C) with wide-range voltage tolerance (3.0–3.6 V).

Technical Context

The R5F56108WDBG#U0 implements a high-efficiency RX CPU executing one instruction per system clock cycle, with variable-length instructions and ten addressing modes. Its memory subsystem includes on-chip flash with three programming modes (SCI boot, user program, user boot) and configurable wait-state control for external bus access across eight independently programmable chip-select areas.

Peripheral integration centers on deterministic real-time operation: four independent A/D units support simultaneous scan mode with hardware-triggered conversion start (via TPU/TMR/external signal), while the dual 10-bit D/A converters provide rail-to-rail output referenced to VREFH. The interrupt controller supports 116 peripheral interrupts with eight priority levels and non-maskable NMI input.

Key Specifications

Pinout & Package

Package: 176-pin LFBGA (PLBG0176GA-A), 12 mm × 12 mm, 0.8 mm pitch, bottom-side thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56108WNBG, the R5F56108WDBG#U0 provides guaranteed operation down to −40°C for harsh environments; compared with R5F56107WDBG, it delivers 512 Kbytes additional flash for bootloader redundancy, safety certification artifacts, or field-upgradable application modules.

Availability

R5F56108WDBG#U0 is available at Aetrix Electronics and suitable for office automation equipment, digital industrial controllers, and factory automation gateways requiring stable component supply across multi-year production cycles.

Supply support for R5F56108WDBG#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, and power solutions for automotive, industrial, and IoT markets.

The RX610 Group targets high-performance embedded applications demanding real-time determinism, floating-point math capability, and rich analog/peripheral integration-designed specifically for office automation, industrial PLCs, and motor control systems.

FAQ

What is the maximum operating frequency of the R5F56108WDBG#U0?

The R5F56108WDBG#U0 operates at a maximum system clock frequency of 100 MHz. This is achieved using the on-chip PLL circuit with programmable multiplication/division ratios, allowing flexible clock generation from an external crystal (e.g., 8–20 MHz) or oscillator. The CPU executes one instruction per clock cycle at this frequency, enabling deterministic real-time performance critical for motor control and industrial automation tasks handled by the R5F56108WDBG#U0.

Does the R5F56108WDBG#U0 support external memory expansion?

Yes, the R5F56108WDBG#U0 supports external memory expansion via its dedicated external bus interface. It provides eight independently configurable chip-select areas (CS0–CS7), each supporting up to 16 Mbytes of address space. Each area can be configured for 8-bit or 16-bit data bus width, and data endianness (little or big) is selectable per area. This allows direct connection to SRAM, NOR flash, or peripheral LSI devices-essential for applications like office automation equipment where the R5F56108WDBG#U0 may interface with image buffer memory or FPGA co-processors.

How many A/D and D/A converters does the R5F56108WDBG#U0 integrate?

The R5F56108WDBG#U0 integrates four independent 10-bit A/D converters (each with 4 input channels, totaling 16 analog inputs) and two 10-bit D/A converters. Each A/D unit achieves 1.0 µs conversion time at 50 MHz peripheral clock (PCLK), with support for single-scan, continuous-scan, and hardware-triggered modes. The D/A converters deliver rail-to-rail output (0 V to VREFH) and are used for precision analog output in applications such as sensor calibration or actuator biasing within the R5F56108WDBG#U0's target use cases.

What debug and programming interfaces are available on the R5F56108WDBG#U0?

The R5F56108WDBG#U0 supports on-chip debugging via a standard JTAG interface using dedicated pins: TDI, TDO, TCK, TMS, and TRST#. An EMLE pin controls emulator enable/disable state. Programming is supported through SCI boot mode (using SCI channel 0 or 1), user program mode (flash programming via application code), and user boot mode (custom bootloader execution). These interfaces enable secure firmware updates and real-time trace debugging-critical during development and validation of complex industrial firmware running on the R5F56108WDBG#U0.

Is the R5F56108WDBG#U0 pin-compatible with other RX610 Group MCUs?

Yes, the R5F56108WDBG#U0 is pin-compatible with other 176-pin LFBGA variants in the RX610 Group, including R5F56107WDBG, R5F56106WDBG, and R5F56104WDBG. All share identical pin assignments, electrical characteristics, and package dimensions (PLBG0176GA-A). This allows hardware reuse across product tiers-e.g., designing a single PCB that supports different flash capacities (2 Mbytes → 1.5 Mbytes → 1 Mbyte) by changing only the MCU variant, simplifying inventory and qualification for industrial customers deploying the R5F56108WDBG#U0.