Renesas R5F10RGCAFB#10

Overview

R5F10RGCAFB#10 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 R5F10RGCAFB#10 datasheet, R5F10RGCAFB#10 pinout, R5F10RGCAFB#10 application, or R5F10RGCAFB#10 equivalent, key selection criteria include its 48-pin 0.5 mm pitch LFQFP package, 32 KB code flash with background data flash erase/program, on-chip LCD drive supporting capacitor split and internal boost methods, and 1.6 V to 5.5 V single-supply operation.

Technical Context

The R5F10RGCAFB#10 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It delivers 31 DMIPS at 24 MHz using the high-speed on-chip oscillator (±1% accuracy over voltage and temperature).

Its integrated LCD controller supports up to 35 segments × 8 commons via three methods-capacitor split (0.12 µA LCD current), internal voltage boost (0.63 µA at VDD = 3.0 V), and resistance division-with 16-step contrast control and blinking support. The device includes two DMA channels, UART, I²C, two CSI interfaces, and safety features compliant with IEC/UL 60730.

Key Specifications

Pinout & Package

Package: 48-pin plastic LFQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, consumer-grade (−40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RGCAFB#10, R5F10RGA offers lower memory cost without sacrificing LCD or low-power capability, while R5F10RLCAFB trades compact 48-pin packaging for expanded I/O and LCD drive capacity - neither is pin-compatible, but both share identical peripheral register mapping and toolchain support.

Availability

R5F10RGCAFB#10 is available at Aetrix Electronics and suitable for smart metering, programmable thermostats, and portable medical devices requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R5F10RGCAFB#10 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 optimized analog peripherals, robust safety features, and scalable memory to reduce system-level BOM and simplify certification.

FAQ

What is the maximum operating frequency and performance of the R5F10RGCAFB#10?

The R5F10RGCAFB#10 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS. Its RL78 CPU core executes 86% of instructions in 1–2 clock cycles due to its 3-stage pipeline and Harvard architecture, enabling responsive real-time control in LCD applications without external clock crystals.

Does the R5F10RGCAFB#10 support true hardware LCD bias generation without external components?

Yes, the R5F10RGCAFB#10 integrates a complete LCD controller/driver with internal voltage boosting and capacitor-split methods. When using the capacitor-split method, it achieves 0.12 µA LCD operating current and requires only external CAPL/CAPH capacitors - no external DC-DC or charge-pump ICs are needed for basic segmented LCD drive.

What low-power modes does the R5F10RGCAFB#10 support, and what functions remain active in each?

The R5F10RGCAFB#10 supports Stop mode (0.23 µA, RAM retained), Halt mode (0.64 µA, RTC + LVD active), and Snooze mode (selective peripheral wake-up). In Halt mode, the RTC continues counting, LVD monitors supply voltage, and the device wakes instantly on interrupt - ideal for time-critical battery-backed applications.

Can the R5F10RGCAFB#10 perform ADC conversions while in low-power mode?

Yes, the R5F10RGCAFB#10 supports ADC operation in Stop mode. Its 10-bit ADC (10 channels) can be triggered by internal timers or external events, completing 2.1 µs conversions while maintaining 0.23 µA system current - enabling periodic sensor sampling without full CPU wake-up.

Is the R5F10RGCAFB#10 pin-compatible with other RL78/L12 variants like R5F10RGA or R5F10RLCAFB?

No, the R5F10RGCAFB#10 is not pin-compatible with R5F10RGA (same 48-pin package but different memory configuration) or R5F10RLCAFB (64-pin package). While all share identical peripheral register maps and software compatibility, physical pin count and layout differ - PCB redesign is required for migration between these variants.