Renesas R5F104BCDFP#X0

Overview

R5F104BCDFP#X0 from Renesas is a 32-pin LQFP-32, 0.8 mm pitch, industrial-grade (D) RL78/G14 16-bit microcontroller with 16 KB flash, 2.5 KB RAM, 4 KB data flash, and ultra-low power operation (66 μA/MHz active, 0.60 μA RTC+LVD). It integrates UART, I²C, SPI, 10-bit ADC (8 channels), RTC, and watchdog timer for embedded control in battery-powered sensors and industrial HMI.

For engineers reviewing the R5F104BCDFP#X0 datasheet, R5F104BCDFP#X0 pinout, R5F104BCDFP#X0 application, or R5F104BCDFP#X0 equivalent, key selection criteria include its 16 KB code flash size, -40 to +85°C industrial temperature rating, LQFP-32 package with 0.8 mm pitch, integrated 10-bit ADC with internal reference, and support for SNOOZE mode for low-power sensor wake-up.

Technical Context

The R5F104BCDFP#X0 implements the RL78 CPU core with 3-stage pipeline, 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 16 KB on-chip flash (1 KB block size), 4 KB data flash with background operation (BGO), and 2.5 KB RAM.

Peripheral integration includes one 12-bit interval timer, one real-time clock with calendar/alarm/correction, eight 16-bit timer channels (TAU), up to ten I²C channels, three UART/LIN channels, three CSI/SPI channels, and an 8/10-bit ADC with internal 1.45 V reference and temperature sensor - all operating across 1.6–5.5 V supply.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 × 7 mm, 0.8 mm pitch), JEDEC standard PLQP0032GB-A footprint, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BCDFP#X0, the R5F104BEFP#X0 offers 3× flash and 2.2× RAM for scalable firmware, while R5F104BGFP#X0 doubles data flash capacity and adds 4 KB RAM - making both suitable for enhanced feature sets without PCB redesign, but not drop-in replacements due to memory-mapped peripheral address differences in larger variants.

Availability

R5F104BCDFP#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering interfaces, and programmable logic controller I/O modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F104BCDFP#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 automotive, industrial, and IoT markets.

The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated industrial controls and sensor edge devices - balancing performance, integration, and energy efficiency.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F104BCDFP#X0?

The R5F104BCDFP#X0 operates at up to 32 MHz with the high-speed on-chip oscillator, delivering 44 DMIPS of processing performance. Its RL78 CPU core achieves a minimum instruction execution time of 0.03125 μs at this frequency, and supports dynamic clock scaling down to 32.768 kHz for ultra-low-power RTC operation. This range makes R5F104BCDFP#X0 suitable for both responsive control tasks and extended battery-life applications.

Does the R5F104BCDFP#X0 support in-system programming and secure firmware updates?

Yes, the R5F104BCDFP#X0 supports full in-system programming via its on-chip debug interface and includes self-programming capabilities with boot swap functionality and flash shield window protection. These features allow secure field firmware updates without external programmers, and prevent unauthorized access to critical code sections - essential for maintaining integrity in deployed R5F104BCDFP#X0-based industrial devices.

What analog features does the R5F104BCDFP#X0 provide for sensor interfacing?

The R5F104BCDFP#X0 integrates a 10-bit successive-approximation ADC with 8 analog input channels, internal 1.45 V reference voltage, and an on-die temperature sensor. It operates across the full 1.6–5.5 V supply range and supports differential input modes. These capabilities enable direct connection of resistive sensors, thermistors, and voltage-output transducers - all without external reference or signal conditioning components in many R5F104BCDFP#X0 implementations.

How does the R5F104BCDFP#X0 manage power in battery-constrained applications?

The R5F104BCDFP#X0 achieves industry-leading low-power operation: 66 μA/MHz in active mode, 0.60 μA in STOP mode with RTC and LVD active, and sub-μA HALT mode. Its SNOOZE mode allows peripherals like ADC or UART to operate autonomously while the CPU sleeps, waking only on event completion. Combined with programmable voltage detection (LVD) and multiple clock sources, this enables multi-year operation on coin cells - a key advantage for remote R5F104BCDFP#X0 sensor deployments.

Is the R5F104BCDFP#X0 pin-compatible with other RL78/G14 variants in the same package?

Yes, the R5F104BCDFP#X0 shares identical pinout and electrical characteristics with all other RL78/G14 devices in the 32-pin LQFP-32 (0.8 mm pitch) package, including R5F104BEFP#X0 and R5F104BGFP#X0. This allows direct PCB reuse across memory variants - though firmware must be validated for memory map and peripheral register differences introduced by larger flash/RAM configurations in higher-tier parts.