Renesas R5F10RGAAFB#50

Overview

R5F10RGAAFB#50 from Renesas is a 48-pin LFQFP, 16 KB flash, 1 KB RAM, 2 KB data flash 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 and portable medical devices.

For engineers reviewing the R5F10RGAAFB#50 datasheet, R5F10RGAAFB#50 pinout, R5F10RGAAFB#50 application, or R5F10RGAAFB#50 equivalent, key selection criteria include its 48-pin 0.5 mm pitch LFQFP package, LCD drive capability up to 35 segments × 8 commons, 24 MHz max CPU frequency delivering 31 DMIPS, and support for capacitor-split and internal-boost LCD bias methods.

Technical Context

The R5F10RGAAFB#50 implements the RL78 16-bit CISC Harvard architecture with 3-stage pipeline, enabling 86% of instructions in 1–2 clock cycles. Its on-chip high-speed oscillator delivers ±1% accuracy at 24 MHz across 1.8–5.5 V and −20°C to +85°C.

It integrates a dedicated LCD controller supporting waveform types A/B, 16-step contrast adjustment, blinking control, and three bias methods - capacitor split, internal voltage boost (0.63 µA at VDD = 3.0 V), and resistance division - all configurable via register settings without external components.

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 microcontroller applications.

Compared with R5F10RFAAFB#50, the R5F10RGAAFB#50 provides double flash capacity for feature-rich firmware and secure bootloader space; versus R5F10RLAAFB#50, it offers identical core functionality in a smaller 48-pin footprint, reducing PCB area and assembly cost where I/O count permits.

Availability

R5F10RGAAFB#50 is available at Aetrix Electronics and suitable for smart metering, portable medical devices, home appliance control panels, and industrial HMI modules requiring stable component supply and long-term lifecycle support.

Supply support for R5F10RGAAFB#50 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 display drivers, precision analog peripherals, and robust safety features to replace discrete display controllers in cost- and power-sensitive systems.

FAQ

What is the maximum LCD resolution supported by the R5F10RGAAFB#50?

The R5F10RGAAFB#50 supports up to 35 segment × 8 common or 39 segment × 4 common LCD configurations. This is enabled by its integrated LCD controller/driver with dedicated VL1–VL4 power rails, COM0–COM7 outputs, and SEG0–SEG35 pins - sufficient for multi-digit numeric displays or basic alphanumeric panels in smart meters and medical devices. The R5F10RGAAFB#50 does not support graphical or dot-matrix LCDs.

Does the R5F10RGAAFB#50 require an external crystal oscillator?

No, the R5F10RGAAFB#50 includes a high-speed on-chip oscillator accurate to ±1% at 24 MHz across 1.8–5.5 V and −20°C to +85°C, eliminating the need for an external crystal in most applications. An external crystal (X1/X2) is optional for higher precision timing or when using the subsystem clock (XT1/XT2) for RTC calibration. The R5F10RGAAFB#50 remains fully functional with only the internal oscillator enabled.

How does the R5F10RGAAFB#50 manage power in battery-operated devices?

The R5F10RGAAFB#50 achieves ultra-low-power operation with 0.64 µA Halt mode (RTC + LVD active), 0.23 µA Stop mode (RAM retained), and 62.5 µA/MHz active current. Its LCD controller further reduces display power: 0.12 µA using capacitor-split bias and 0.63 µA with internal voltage boost at VDD = 3.0 V. These features allow multi-year battery life in devices like portable medical monitors and utility meters powered by coin cells or AA batteries. The R5F10RGAAFB#50 also supports snooze mode for periodic wake-up without full CPU restart.

Can the R5F10RGAAFB#50 perform secure firmware updates in the field?

Yes, the R5F10RGAAFB#50 supports secure in-system programming via its 16 KB on-chip flash memory with block protection and flash shield window function. Combined with the 2 KB data flash (rated for 1 million erase cycles), it enables reliable storage of encrypted firmware images and cryptographic keys. The R5F10RGAAFB#50's hardware CRC engine verifies flash integrity during boot and update routines, satisfying IEC/UL 60730 Class B safety requirements for field-upgradable embedded systems.

What development tools are officially supported for the R5F10RGAAFB#50?

Renesas provides full toolchain support for the R5F10RGAAFB#50, including the CS+ IDE with compiler and debugger, E2 emulator Lite for on-chip debug via TOOL0 pin, and the Renesas Flash Programmer for production programming. Evaluation boards such as the RTK7010002S (RL78/L12 Starter Kit) offer plug-and-play hardware with sample LCD modules and jumper-configurable peripherals. All tools are validated for the R5F10RGAAFB#50's specific memory map, pinout, and LCD controller registers.