Renesas R5F104BGGNA#W0

Overview

R5F104BGGNA#W0 from Renesas is a 32-pin HWQFN-packaged RL78/G14 16-bit microcontroller with 96 KB flash, 12 KB RAM, and industrial-grade -40°C to +105°C operation (G-grade). It delivers 44 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD), and integrates UART, I²C, SPI, 16-bit timers, 10-bit ADC (16 channels), and on-chip RTC - deployed in smart metering and industrial sensor nodes.

For engineers reviewing the R5F104BGGNA#W0 datasheet, R5F104BGGNA#W0 pinout, R5F104BGGNA#W0 application, or R5F104BGGNA#W0 equivalent, key selection criteria include its G-grade temperature rating, HWQFN-32 package with 0.5 mm pitch, integrated data flash (8 KB), and support for background data flash rewriting (BGO) without halting program execution.

Technical Context

The R5F104BGGNA#W0 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-power mode). It includes dedicated hardware accelerators for multiply/divide/accumulate operations and a 1 MB address space.

Its peripheral set is orchestrated via Event Link Controller (ELC) enabling direct event-triggered peripheral activation without CPU intervention, and Data Transfer Controller (DTC) supporting block, repeat, and chain transfer modes - reducing interrupt overhead in real-time control loops and sensor data acquisition.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS. Pin count and footprint match JEDEC MO-220WEED.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BGGNA#W0, R5F104BGGLA#W0 offers identical functionality in a smaller WFLGA package ideal for miniaturized designs, while R5F104GGLA#W0 provides scalable memory for complex building automation firmware - both retain G-grade temperature qualification and BGO capability.

Availability

R5F104BGGNA#W0 is available at Aetrix Electronics and suitable for smart metering, industrial motor control, and wireless sensor node applications requiring stable component supply across long product lifecycles.

Supply support for R5F104BGGNA#W0 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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line targets cost-sensitive, ultra-low-power general-purpose applications - balancing performance, integration, and energy efficiency for industrial controls and sensor edge devices.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104BGGNA#W0?

The R5F104BGGNA#W0 operates at a maximum frequency of 32 MHz and delivers 44 DMIPS (Dhrystone MIPS) under those conditions. This performance level is achieved using the RL78 CPU core's 3-stage pipeline and optimized instruction set, enabling deterministic real-time response in motor control and sensor fusion applications. The R5F104BGGNA#W0 maintains this rating across its full industrial temperature range (-40°C to +105°C).

Does the R5F104BGGNA#W0 support background data flash rewriting (BGO), and what is the endurance specification?

Yes, the R5F104BGGNA#W0 supports Background Operation (BGO) for data flash rewriting, allowing program execution from code flash while simultaneously erasing or programming the 8 KB data flash. Its data flash endurance is rated at 1,000,000 write/erase cycles (typical), with rewrite voltage supported across the full VDD range of 1.8 V to 5.5 V - enabling robust field firmware updates and parameter storage in harsh industrial environments.

What are the analog capabilities of the R5F104BGGNA#W0, including ADC resolution, channel count, and reference options?

The R5F104BGGNA#W0 integrates a 10-bit successive-approximation ADC with 16 analog input channels, supporting single-ended and differential measurements. It includes an internal 1.45 V reference voltage and a built-in temperature sensor. Users may select either the internal reference or an external reference applied to AVREFP/AVREFM pins, enabling high-accuracy ratiometric sensing for current monitoring, battery voltage tracking, and environmental sensing in industrial applications.

How does the R5F104BGGNA#W0 achieve ultra-low power consumption, and what is its minimum current draw in STOP mode?

The R5F104BGGNA#W0 achieves ultra-low power via multiple low-power modes: HALT, STOP, and SNOOZE. In STOP mode with only the real-time clock (RTC) and low-voltage detector (LVD) enabled, it draws just 0.60 μA (typical) at VDD = 3.0 V and TA = 25°C. This enables multi-year battery operation in wireless sensors and portable industrial instruments, with fast wake-up (< 4 μs) from STOP mode via external interrupts or RTC alarms.

Is the R5F104BGGNA#W0 pin-compatible with other RL78/G14 variants in the same HWQFN-32 package, and what design considerations apply to the REGC pin?

Yes, the R5F104BGGNA#W0 is pin-compatible with all RL78/G14 variants in the 32-pin HWQFN package (e.g., R5F104BGANA#W0, R5F104BGDNA#W0), sharing identical pinout, electrical characteristics, and footprint. The REGC pin requires a 0.47–1 μF ceramic capacitor connected directly to VSS to stabilize the on-chip voltage regulator - omission or undersizing causes analog noise and potential reset instability, especially during ADC conversions or LVD monitoring.