Renesas R5F104BGDFP#X0

Overview

R5F104BGDFP#X0 from Renesas is a 32-bit RL78/G14 microcontroller with 96 KB flash, 12 KB RAM, and 44-pin LQFP-0.8 mm package, operating from 1.6–5.5 V at -40 to +85°C (industrial grade D). 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 10-bit ADC (20 channels), UART/SPI/I²C interfaces, RTC, and on-chip debug.

For engineers reviewing the R5F104BGDFP#X0 datasheet, R5F104BGDFP#X0 pinout, R5F104BGDFP#X0 application, or R5F104BGDFP#X0 equivalent, this page provides verified technical context, key specifications, package details, real-world use cases, and validated alternative options for industrial control, sensor nodes, and low-power embedded systems design.

Technical Context

The R5F104BGDFP#X0 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. Its memory subsystem comprises 96 KB code flash (1 KB block size), 4 KB data flash (1M rewrite cycles), and 12 KB SRAM.

Peripheral integration includes Timer Array Unit (TAU) with 8 channels, 1-channel RTC with calendar/alarm, 1-channel watchdog timer, 10-bit ADC with internal 1.45 V reference and temperature sensor, and serial interfaces: 3× UART (LIN-capable), up to 8× CSI (SPI-compatible), and up to 10× I²C. Power management supports HALT, STOP, and SNOOZE modes with on-chip POR and 14-level LVD.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.8 mm pitch), JEDEC standard PLQP0044GC-A footprint, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104CGDFP#X0, the R5F104BGDFP#X0 trades flash/RAM headroom for identical peripheral functionality in the same footprint; versus R5F104BGAFP#V0, it delivers 8 additional I/O pins and full peripheral access at the cost of slightly larger board area.

Availability

R5F104BGDFP#X0 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and energy metering interfaces requiring stable component supply, long lifecycle assurance, and automotive-grade traceability.

Supply support for R5F104BGDFP#X0 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 industrial, automotive, and IoT markets.

The RL78/G14 product line targets cost-sensitive, ultra-low-power embedded applications demanding high integration, robust qualification, and toolchain maturity - especially in industrial automation and consumer appliances.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104BGDFP#X0?

The R5F104BGDFP#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 44 DMIPS of processing performance. This frequency is achievable across the full 1.6–5.5 V supply range and -40 to +85°C temperature range, with oscillator accuracy maintained at ±1.0% under those conditions. The R5F104BGDFP#X0 supports dynamic clock switching to lower frequencies (e.g., 32.768 kHz) for ultra-low-power RTC operation without sacrificing timing precision.

Does the R5F104BGDFP#X0 support in-circuit debugging and programming?

Yes, the R5F104BGDFP#X0 includes full on-chip debug functionality compatible with Renesas E2 studio and CS+ IDEs. It supports SWD-based debugging via dedicated TOOL0/TOOLRxD/TOOLTxD pins (P40, P50, P51), enabling breakpoints, watchpoints, and real-time variable inspection. Flash self-programming is supported with boot swap and flash shield window features, allowing secure firmware updates in the field without external programmers.

How many analog input channels does the R5F104BGDFP#X0 ADC support, and what reference options are available?

The R5F104BGDFP#X0 integrates a 10-bit successive-approximation ADC with up to 20 analog input channels (ANI0–ANI19). It supports dual reference configurations: external AVREFP/AVREFM pins or internal 1.45 V reference voltage. The internal reference is factory-trimmed and stable across temperature, enabling accurate sensor measurements without external voltage references - critical for compact, low-BOM designs like smart thermostats or portable diagnostics.

What serial communication interfaces are integrated into the R5F104BGDFP#X0?

The R5F104BGDFP#X0 integrates three UART modules (one LIN-bus compliant), up to eight CSI channels (SPI-compatible), and up to ten I²C channels. These are implemented as flexible peripheral units assignable to multiple pin combinations via PIOR registers. For example, P14/P15 support SDA20/SCL20 (I²C), while P10–P13 support SCK11/SDA11/SO11/TxD2 for mixed SPI/UART operation - enabling concurrent communication with displays, sensors, and host controllers without external bus expanders.

Is the R5F104BGDFP#X0 pin-compatible with other RL78/G14 variants in the same package?

Yes, all RL78/G14 devices in the 44-pin LQFP-0.8 mm package (e.g., R5F104AGDFP#X0, R5F104CGDFP#X0, R5F104EGDFP#X0) share identical pinouts and electrical characteristics. This allows direct hardware reuse across memory variants - for example, upgrading from 48 KB to 96 KB flash requires only a firmware and BOM change, with no PCB modification. Pin compatibility is guaranteed by Renesas' family-wide mechanical and functional specification alignment.