Renesas R5F104BGANA#U0

Overview

R5F104BGANA#U0 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 and delivering 44 DMIPS at 32 MHz for low-power industrial control applications.

For engineers reviewing the R5F104BGANA#U0 datasheet, R5F104BGANA#U0 pinout, R5F104BGANA#U0 application, or R5F104BGANA#U0 equivalent, key selection criteria include its 0.60 μA RTC+LVD stop-mode current, 66 μA/MHz active power, integrated 10-bit ADC (20-channel), dual UART/SPI/I²C interfaces, and industrial-grade −40 to +105°C operation.

Technical Context

The R5F104BGANA#U0 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), and includes multiply/divide/accumulate instructions within a 1 MB address space.

It integrates a configurable Event Link Controller (ELC) for hardware-triggered peripheral chaining, Data Transfer Controller (DTC) with block/repeat transfer modes, and on-chip high-accuracy ±1.0% oscillator (1–64 MHz selectable), enabling deterministic real-time response without external timing components.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BGANA#U0, the R5F104CGANA#U0 reduces flash/RAM for cost-constrained edge sensors, while the R5F104FGANA#U0 increases flash capacity for complex communication stacks - both retain identical low-power behavior, peripheral set, and industrial temperature rating.

Availability

R5F104BGANA#U0 is available at Aetrix Electronics and suitable for smart metering, industrial motor control, building automation sensor nodes, and portable medical monitors requiring stable component supply across extended product lifecycles.

Supply support for R5F104BGANA#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive industrial and consumer applications demanding sub-μA sleep current and robust peripheral integration.

FAQ

What is the maximum clock frequency and corresponding DMIPS performance of the R5F104BGANA#U0?

The R5F104BGANA#U0 operates at up to 32 MHz and delivers 44 DMIPS of processing performance. This is achieved using the RL78 CPU core's 3-stage pipeline and optimized instruction set, enabling deterministic real-time execution for motor control, sensor fusion, and communication protocol stacks without requiring external accelerators.

Does the R5F104BGANA#U0 support in-system programming and secure firmware updates?

Yes, the R5F104BGANA#U0 supports full in-system programming via its on-chip debug interface and includes boot-swap functionality plus a flash shield window to restrict write access to designated memory regions. These features enable secure over-the-air (OTA) or field firmware updates while preventing unauthorized modification of protected bootloader or calibration data sections.

What analog peripherals are integrated into the R5F104BGANA#U0 and how are they configured?

The R5F104BGANA#U0 integrates a 10-bit ADC with up to 20 input channels, an 8-bit DAC with two outputs, two comparators, and an on-chip temperature sensor. All analog blocks share the same 1.45 V internal reference voltage and operate across the full 1.6–5.5 V supply range, allowing flexible configuration for sensor signal conditioning, closed-loop control, and battery monitoring without external references.

How does the R5F104BGANA#U0 achieve ultra-low power consumption in STOP mode?

The R5F104BGANA#U0 achieves 0.60 μA STOP mode current by powering down the CPU, flash, and most peripherals while retaining operation of the real-time clock (RTC) and low-voltage detector (LVD). This configuration enables precise timekeeping and brownout protection during multi-year battery operation, with wake-up possible via RTC alarm or external interrupt on any configured pin.

Is the R5F104BGANA#U0 pin-compatible with other RL78/G14 variants in the same package?

Yes, all RL78/G14 devices in the 32-pin HWQFN package-including R5F104BGANA#U0, R5F104CGANA#U0, and R5F104FGANA#U0-share identical pinouts and electrical characteristics. This allows drop-in replacement across memory variants during design iteration or volume procurement without PCB layout changes.