Renesas R5F56104WNBG#U0

Overview

R5F56104WNBG#U0 from Renesas is a 32-bit RX610 Group MCU featuring a 100 MHz RX CPU core with single-cycle instruction execution, 768 KB flash, 128 KB RAM, 32 KB data flash, 10-bit A/D and D/A converters, and integrated peripherals including 7-channel SCI, 2-channel I²C, 16-bit TPU timers, and external bus interface - deployed in industrial HMI and office automation control units.

For engineers reviewing the R5F56104WNBG#U0 datasheet, R5F56104WNBG#U0 pinout, R5F56104WNBG#U0 application, or R5F56104WNBG#U0 equivalent, key selection criteria include its 176-pin LFBGA package, 100 MHz max operating frequency, 768 KB flash capacity, dual 10-bit DAC outputs, and support for external memory expansion via eight independently configurable chip-select areas.

Technical Context

The R5F56104WNBG#U0 implements the RXv1 CPU architecture with IEEE 754-compliant single-precision FPU, 32×32→64-bit multiplier, and 32/32→32-bit divider. Its interrupt controller supports 116 peripheral interrupts and 16 external IRQ pins with eight priority levels.

Peripheral clock domains are fully independent: system clock (ICLK) up to 100 MHz for CPU/RAM/ROM, peripheral clock (PCLK) up to 50 MHz for timers/ADC/SCI, and external bus clock (BCLK) up to 25 MHz. The device includes four power-down modes - sleep, all-module clock stop, software standby, and deep software standby - with module-stop capability per peripheral.

Key Specifications

Pinout & Package

176-pin LFBGA (PLBG0176GA-A) package with 0.8 mm ball pitch, 12 mm × 12 mm body size, and exposed thermal pad. Pin functions conform to Renesas' standardized RX610 Group assignment across power, clock, I/O, timer, communication, analog, and debug domains.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F56104WNBG#U0, the WDBG variant offers identical functionality with alternate marking, while the R5F56106WNBG#U0 provides 256 KB additional flash for larger firmware or dual-bank updates - both retain full pin and software compatibility.

Availability

R5F56104WNBG#U0 is available at Aetrix Electronics and suitable for industrial HMI, office equipment motion control, and factory floor data logging requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F56104WNBG#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 RX610 Group targets cost-sensitive, high-performance embedded applications requiring real-time determinism, rich analog integration, and external memory expansion - optimized for industrial control, office automation, and building management systems.

FAQ

What is the maximum operating frequency of the R5F56104WNBG#U0?

The R5F56104WNBG#U0 operates at a maximum system clock frequency of 100 MHz. This is achieved via its on-chip PLL circuit, which accepts an external crystal (e.g., 8–20 MHz) on XTAL/EXTAL pins and multiplies it to generate the 100 MHz ICLK. The CPU executes most instructions in a single cycle at this frequency, delivering 165 DMIPS performance as measured by EEMBC CoreMark.

Does the R5F56104WNBG#U0 support external memory expansion?

Yes, the R5F56104WNBG#U0 supports external memory expansion through its 16-bit external bus interface. It provides eight independently configurable chip-select areas (CS0–CS7), each supporting up to 16 MB address space. Each area can be set for 8-bit or 16-bit bus width, and data endianness (little or big) is selectable per area - enabling direct connection to SRAM, NOR flash, or FPGA peripherals without external address latches.

How many analog-to-digital converter channels does the R5F56104WNBG#U0 include?

The R5F56104WNBG#U0 integrates four independent 10-bit successive-approximation register (SAR) A/D converter units, each with four input channels (AN0–AN15), for a total of 16 analog inputs. Conversion time is 1.0 µs per channel at 50 MHz peripheral clock (PCLK), and triggers can originate from software, TPU timer events, or external pins - supporting synchronized sampling in motor control or sensor fusion applications.

What debug interfaces are supported by the R5F56104WNBG#U0?

The R5F56104WNBG#U0 supports Renesas' on-chip debugging interface using SWD (Serial Wire Debug) via dedicated pins: TDI (Pin A1), TDO/WDTOVF# (Pin E2), TCK (Pin B2), TMS (Pin C3), and TRST# (Pin C1). EMLE (Pin E3) must be driven high to enable emulator functionality. No JTAG TAP controller is present; debugging is performed exclusively through the SWD protocol compatible with Renesas E2 studio and E2 Lite debuggers.

Is the R5F56104WNBG#U0 pin-compatible with other RX610 Group MCUs?

Yes, the R5F56104WNBG#U0 is pin-compatible with all other 176-pin LFBGA variants in the RX610 Group, including R5F56106WNBG#U0, R5F56107WNBG#U0, and R5F56108WNBG#U0. They share identical pin assignments, power requirements, and peripheral mappings. Firmware portability is ensured across these parts, with differences limited to flash capacity (768 KB, 1 MB, 1.5 MB, or 2 MB) and minor ROM configuration bits - enabling scalable design reuse.