Renesas R5F10RJCGFA#V0

Overview

R5F10RJCGFA#V0 from Renesas is a 52-pin LQFP-packaged 16-bit RL78/L12 microcontroller with 32 KB flash, 2 KB data flash, 1.5 KB RAM, integrated LCD controller/driver (up to 35 seg × 8 com), and ultra-low-power operation (0.64 µA in RTC+LVD mode). It targets battery-powered LCD display systems such as smart meters, thermostats, and portable medical devices.

For engineers reviewing the R5F10RJCGFA#V0 datasheet, R5F10RJCGFA#V0 pinout, R5F10RJCGFA#V0 application, or R5F10RJCGFA#V0 equivalent, key selection criteria include its 24 MHz max CPU speed (31 DMIPS), on-chip 10-bit ADC (10 channels), dual SPI/I²C/UART interfaces, and industrial-grade −40°C to +105°C operation.

Technical Context

The R5F10RJCGFA#V0 implements the RL78 16-bit CISC Harvard architecture with 3-stage pipeline, delivering 86% of instructions in 1–2 clock cycles. Its low-power design integrates a high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature) and supports snooze mode for selective peripheral wake-up without full CPU restart.

It embeds a dedicated LCD controller supporting capacitor split, internal voltage boost, and resistance division methods with 16-step contrast control and blinking function. The real-time clock includes full calendar, alarm, and watch correction-operable down to 0.64 µA with LVD enabled.

Key Specifications

Pinout & Package

Package: 52-pin LQFP (10 × 10 mm, 0.65 mm pitch), industrial-grade (−40°C to +105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RJAGFA#V0, the R5F10RJCGFA#V0 provides double flash capacity for secure OTA updates and larger feature sets; versus R5F10RLCGFA#V0, it offers identical core functionality in a smaller, lower-cost 52-pin footprint-ideal for space-constrained LCD applications.

Availability

R5F10RJCGFA#V0 is available at Aetrix Electronics and suitable for smart energy metering, industrial thermostat control, and portable medical monitor applications requiring stable component supply across extended product lifecycles.

Supply support for R5F10RJCGFA#V0 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 solutions for automotive, industrial, and IoT markets.

The RL78/L12 product line delivers ultra-low-power, LCD-optimized MCUs targeting battery-operated consumer and industrial displays where longevity, integration, and reliability are critical.

FAQ

What is the maximum operating frequency and performance of the R5F10RJCGFA#V0?

The R5F10RJCGFA#V0 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS of processing performance. Its RL78 core executes 86% of instructions in just 1–2 clock cycles, enabling responsive real-time control in LCD-based applications while maintaining ultra-low power consumption.

Does the R5F10RJCGFA#V0 support external crystal oscillators for precise timing?

Yes, the R5F10RJCGFA#V0 supports external crystals on both X1/X2 (main system clock) and XT1/XT2 (subsystem clock) pins. A 32.768 kHz crystal on XT1/XT2 enables high-accuracy RTC operation, while main system crystals up to 20 MHz provide stable timing for applications requiring tighter frequency tolerance than the on-chip oscillator.

How does the LCD controller in the R5F10RJCGFA#V0 reduce external component count?

The R5F10RJCGFA#V0 integrates a full LCD controller/driver supporting capacitor split, internal voltage boost, and resistance division methods. It drives up to 35 segments × 8 commons directly-eliminating need for external bias generators, charge pumps, or segment drivers-and includes 16-step contrast control and blinking for enhanced UI flexibility.

What safety features does the R5F10RJCGFA#V0 include for certified industrial applications?

The R5F10RJCGFA#V0 includes flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access detection, clock frequency monitoring, and ADC self-test-features aligned with IEC/UL 60730 Class B requirements for functional safety in industrial control and appliance applications.

Can the R5F10RJCGFA#V0 operate from a single 1.6 V supply?

Yes, the R5F10RJCGFA#V0 supports 1.6 V to 5.5 V single-supply operation. At 1.6 V, it maintains full functionality including 10-bit ADC operation (down to 1.6 V), RTC with LVD, and LCD driving via capacitor split method-enabling compatibility with primary lithium batteries and energy-harvesting sources.