Renesas R5F104BGANA#W0

Overview

R5F104BGANA#W0 from Renesas is a 32-pin HWQFN-packaged RL78/G14 16-bit microcontroller with 96 KB flash, 12 KB RAM, and 8 KB data flash, operating at 1.6–5.5 V across –40 to +105°C industrial temperature range. It delivers 44 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.60 μA in RTC+LVD mode), and integrates UART, I²C, SPI, 16-bit timers, 10-bit ADC (16 channels), and real-time clock for embedded control in battery-powered industrial sensors and motor drives.

For engineers reviewing the R5F104BGANA#W0 datasheet, R5F104BGANA#W0 pinout, R5F104BGANA#W0 application, or R5F104BGANA#W0 equivalent, key selection criteria include its 32-pin 5×5 mm HWQFN package with exposed die pad, industrial-grade 105°C operation, integrated data flash rewrite capability (1M cycles), and support for SNOOZE mode for low-latency peripheral wake-up without CPU intervention.

Technical Context

The R5F104BGANA#W0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). Its power management includes HALT, STOP, and SNOOZE modes, with on-chip LVD offering 14 selectable voltage detection levels and interrupt/reset options.

Peripheral integration includes Event Link Controller (ELC) enabling direct hardware-triggered peripheral activation (e.g., ADC start on timer match), Data Transfer Controller (DTC) supporting block/chain transfers, and background operation (BGO) for concurrent code execution during data flash rewriting - critical for firmware-over-the-air updates in field-deployed devices.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch) with exposed die pad (recommended to connect to VSS).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F104CGANA#W0, the R5F104BGANA#W0 trades flash capacity for cost-sensitive designs, while versus R5F104BGAFP#V0 it offers superior thermal dissipation and board space efficiency in compact industrial enclosures.

Availability

R5F104BGANA#W0 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, and battery-powered sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for R5F104BGANA#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 management solutions for industrial, automotive, and IoT markets.

The RL78/G14 product line targets cost-sensitive, ultra-low-power embedded applications demanding high integration, robust industrial qualification, and long-term supply assurance - especially in motor control, sensing, and human-machine interface systems.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104BGANA#W0?

The R5F104BGANA#W0 operates at up to 32 MHz and achieves 44 DMIPS performance. This metric reflects its real-world instruction throughput using the EEMBC CoreMark benchmark, enabling deterministic execution of control algorithms and communication stacks in time-critical applications such as motor commutation and sensor fusion.

Does the R5F104BGANA#W0 support background data flash rewriting while executing application code?

Yes, the R5F104BGANA#W0 supports Background Operation (BGO) for data flash. This allows the CPU to continue running application code from program memory while simultaneously rewriting the 8 KB data flash - a critical capability for over-the-air firmware updates and secure parameter storage without system interruption.

What is the analog input capability of the R5F104BGANA#W0, including resolution, channel count, and reference options?

The R5F104BGANA#W0 integrates a 10-bit successive-approximation ADC with 16 analog input channels. It supports both internal reference (1.45 V) and external references via AVREFP/AVREFM pins, enabling flexible measurement ranges from 0–VDD or differential configurations for noise-immune sensor interfacing in industrial environments.

How does the SNOOZE mode function in the R5F104BGANA#W0, and what peripherals can trigger wake-up?

SNOOZE mode in the R5F104BGANA#W0 allows selected peripherals (e.g., UART, ADC, RTC) to remain active while the CPU is halted, reducing current draw to ~1.2 μA. Wake-up is triggered by events such as UART frame reception, ADC conversion completion, or RTC alarm - enabling rapid response without full CPU restart latency.

What packaging and thermal specifications apply to the R5F104BGANA#W0, and how should the exposed die pad be handled?

The R5F104BGANA#W0 uses a 32-pin HWQFN package (5 × 5 mm, 0.5 mm pitch) with an exposed die pad. Renesas recommends connecting this pad directly to VSS using multiple thermal vias to improve heat dissipation and electrical stability - especially important for sustained 32 MHz operation in +105°C industrial environments.