Renesas R5F10RB8GFP#10

Overview

R5F10RB8GFP#10 from Renesas is an 8 KB flash, 1 KB RAM, 32-pin LQFP ultra-low-power 16-bit RL78/L12 microcontroller with integrated LCD controller/driver (35 seg × 4 com), 10-bit ADC (10 channels), RTC, and 24 MHz on-chip oscillator (±1% accuracy). It operates from 1.6 V to 5.5 V and delivers 31 DMIPS at 24 MHz, targeting battery-powered LCD display applications such as smart meters and portable medical devices.

For engineers reviewing the R5F10RB8GFP#10 datasheet, R5F10RB8GFP#10 pinout, R5F10RB8GFP#10 application, or R5F10RB8GFP#10 equivalent, key selection criteria include its 0.64 µA RTC+LVD halt current, 8 KB code flash with self-programming, 32-pin 7 mm × 7 mm LQFP package, and native support for capacitor-split LCD drive - all validated for industrial temperature range (−40°C to +105°C).

Technical Context

The R5F10RB8GFP#10 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It integrates a dedicated LCD controller supporting waveform types A/B, 16-step contrast adjustment, and blinking control - all operating directly from internal voltage boost or capacitor-split methods without external components.

Its power management includes POR, 14-level LVD with interrupt/reset options, and multiple low-power modes: Stop (0.23 µA RAM-retained), Halt (0.64 µA with RTC+LVD), and Snooze mode. The 24 MHz high-speed on-chip oscillator eliminates need for external crystal while maintaining ±1% accuracy across 1.8–5.5 V and −20°C to +85°C.

Key Specifications

Pinout & Package

32-pin plastic LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, with exposed pad not present. Pin functions assigned per default PIOR=00H configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RB8GFP#10, R5F10RF8GFP#10 provides scalable I/O for complex HMI, while R5F10RBCGFP#10 offers headroom for feature-rich firmware - both maintain identical low-power behavior, LCD architecture, and industrial temperature rating.

Availability

R5F10RB8GFP#10 is available at Aetrix Electronics and suitable for smart metering, portable medical devices, and industrial HMI applications requiring stable component supply, long-term lifecycle assurance, and industrial-temperature-rated MCUs.

Supply support for R5F10RB8GFP#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 peripherals like LCD controllers, RTC, and sub-µA sleep modes to minimize system-level power and component count.

FAQ

What is the maximum operating frequency and performance of the R5F10RB8GFP#10?

The R5F10RB8GFP#10 features a 16-bit RL78 CPU core running at up to 24 MHz, delivering 31 DMIPS. Its 3-stage pipeline and 86% single-cycle instruction execution enable efficient real-time control. The high-speed on-chip oscillator achieves ±1% accuracy across 1.8–5.5 V and −20°C to +85°C, eliminating need for external crystal in most designs.

Does the R5F10RB8GFP#10 support LCD driving without external components?

Yes, the R5F10RB8GFP#10 integrates a full LCD controller/driver supporting capacitor-split, internal voltage boost, and resistance division methods. For capacitor-split operation, only two external capacitors (connected to P126/CAPL and P127/CAPH) are required - no external DC-DC converter or bias IC is needed, reducing BOM cost and board area.

What low-power modes does the R5F10RB8GFP#10 offer, and what are their typical currents?

The R5F10RB8GFP#10 supports multiple low-power states: Stop mode draws 0.23 µA (RAM retained), Halt mode draws 0.64 µA (RTC + LVD active), and operating current is 62.5 µA/MHz. These values are measured at VDD = 3.0 V and TA = 25°C, enabling multi-year battery life in metering and portable applications.

Is the R5F10RB8GFP#10 qualified for industrial temperature operation?

Yes, the R5F10RB8GFP#10 is rated for industrial ambient temperature range of −40°C to +105°C (denoted by 'G' in the part number). This qualification covers all specified electrical characteristics, including flash programming, RTC accuracy, and LCD operation - making it suitable for harsh environments like utility meters and factory HMIs.

What debug and programming interfaces are available on the R5F10RB8GFP#10?

The R5F10RB8GFP#10 includes a 1-wire on-chip debug interface accessible via TOOL0 (P40), TOOLTxD (P12), and TOOLRxD (P11). It supports full break-point debugging, flash programming, and memory inspection without requiring JTAG hardware. The self-programmable flash with shield window also enables secure in-field firmware updates.