Renesas R5F10RGCGFB#X0

Overview

R5F10RGCGFB#X0 from Renesas is a 48-pin LFQFP, 32 KB flash, 2 KB data flash, 1.5 KB RAM RL78/L12 16-bit microcontroller with integrated LCD controller/driver (35 seg × 8 com), 10-bit ADC (10 channels), RTC, and ultra-low-power operation (0.64 µA in Halt mode with RTC + LVD). It targets battery-powered LCD display systems such as smart meters, thermostats, and portable medical devices.

For engineers reviewing the R5F10RGCGFB#X0 datasheet, R5F10RGCGFB#X0 pinout, R5F10RGCGFB#X0 application, or R5F10RGCGFB#X0 equivalent, key selection criteria include its 48-pin LFQFP-0.5 mm pitch package, 32 KB code flash with background data flash erase/program, on-chip LCD bias generation, and industrial-grade −40°C to +105°C operation.

Technical Context

The R5F10RGCGFB#X0 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It supports multiple clock sources: high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature), external crystal (X1/X2), and subsystem clock (XT1/XT2).

Its integrated LCD controller supports capacitor split, internal voltage boost, and resistance division methods across up to 35 segments and 8 commons. The device includes two DMA channels, UART, I²C, two CSI interfaces (SPI-compatible), and safety features compliant with IEC/UL 60730 including flash CRC, RAM parity, and illegal access detection.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 mm × 7 mm, 0.5 mm pitch), lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RGCGFB#X0, the R5F10RGCAGB#X0 trades industrial temperature and flash capacity for lower cost, while the R5F10RJCGFA#X0 expands I/O and ADC count at the expense of package size and pitch-neither is pin-compatible, but both share identical peripheral register mapping and toolchain support.

Availability

R5F10RGCGFB#X0 is available at Aetrix Electronics and suitable for smart energy meters, industrial thermostats, portable medical monitors, and gas detector display modules requiring stable component supply across long production lifecycles.

Supply support for R5F10RGCGFB#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/L12 product line is designed specifically for ultra-low-power LCD-based applications-integrating display drivers, precision timing, and safety features into compact packages for battery-operated instrumentation.

FAQ

What is the maximum operating frequency and corresponding DMIPS performance of the R5F10RGCGFB#X0?

The R5F10RGCGFB#X0 operates at a maximum frequency of 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS. This performance is achieved with ±1% accuracy across 1.8 V–5.5 V supply and −20°C–85°C temperature, enabling deterministic real-time control in LCD-based systems without external clock components.

Does the R5F10RGCGFB#X0 support true hardware LCD bias generation without external components?

Yes, the R5F10RGCGFB#X0 integrates a complete LCD bias generator supporting capacitor split, internal voltage boost, and resistance division methods. With external capacitors on CAPL/CAPH pins, it generates VL1–VL4 internally-eliminating need for external charge pumps or resistor networks in most 35×8 LCD configurations.

How does the R5F10RGCGFB#X0 meet IEC/UL 60730 safety requirements?

The R5F10RGCGFB#X0 implements multiple hardware-level safety mechanisms: flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access detection, clock frequency monitor, and ADC self-test. These features are documented in Renesas' functional safety manual and enable Class B compliance without software overhead.

What are the power modes supported by the R5F10RGCGFB#X0 and their typical current consumption?

The R5F10RGCGFB#X0 supports Stop (0.23 µA RAM-retained), Halt (0.64 µA with RTC+LVD), and Snooze modes. Active-mode current is 62.5 µA/MHz. LCD-specific current is 0.12 µA (capacitor split) or 0.63 µA (internal boost at VDD = 3.0 V), enabling multi-year operation on coin cells in display-centric applications.

Can the R5F10RGCGFB#X0 be used with external crystals for both main and subsystem clocks simultaneously?

Yes-the R5F10RGCGFB#X0 supports concurrent use of X1/X2 (1–20 MHz) for the main system clock and XT1/XT2 (32.768 kHz) for the subsystem clock. This configuration enables precise RTC operation independent of CPU clock domain, critical for time-of-use metering and alarm scheduling in industrial environments.