Renesas R5F10RG8AFB#X0

Overview

R5F10RG8AFB#X0 from Renesas is an 8 KB flash, 1 KB RAM, 48-pin LFQFP microcontroller in the RL78/L12 family, featuring integrated LCD controller/driver (up to 35 seg × 8 com), 10-bit ADC (10 channels), RTC with calendar/alarm, and ultra-low-power operation (62.5 µA/MHz active, 0.64 µA in RTC+LVD halt mode) for battery-powered LCD applications such as smart meters and portable medical devices.

For engineers reviewing the R5F10RG8AFB#X0 datasheet, R5F10RG8AFB#X0 pinout, R5F10RG8AFB#X0 application, or R5F10RG8AFB#X0 equivalent, key selection criteria include its 48-pin 0.5 mm pitch LFQFP package, 8 KB code flash with data flash (2 KB), 1.6–5.5 V supply range, and on-chip LCD drive supporting capacitor-split and internal-boost methods - all critical for space-constrained, low-power human-interface designs.

Technical Context

The R5F10RG8AFB#X0 implements the 16-bit RL78 CPU core delivering 31 DMIPS at 24 MHz, with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 cycles. It integrates a high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature) and supports multiple clock sources including external crystal (X1/X2) and subsystem clock (XT1/XT2).

Its peripheral set includes two CSI interfaces (SPI-compatible), one I²C, one UART, up to eight 16-bit timer channels, DMA (2 channels), and safety features compliant with IEC/UL 60730 - including flash CRC, RAM parity, SFR write protection, and illegal memory access detection - enabling robust operation in consumer-grade industrial environments (−40°C to +85°C).

Key Specifications

Pinout & Package

48-pin plastic LFQFP (7 × 7 mm, 0.5 mm pitch), RoHS-compliant, tape-and-reel packaging (#X0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RG8AFB#X0, the R5F10RGAAB#X0 offers double flash capacity while retaining identical low-power behavior, LCD capability, and pin compatibility - making it ideal for incremental firmware expansion. The R5F10RGCAF#X0 further scales flash to 32 KB but maintains the same power profile and peripheral feature set, supporting advanced applications without layout changes.

Availability

R5F10RG8AFB#X0 is available at Aetrix Electronics and suitable for smart utility meters, portable medical devices, home appliance control panels, and industrial HMI modules requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for R5F10RG8AFB#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 delivers true low-power MCUs optimized for LCD-based applications, integrating LCD controllers, ultra-low-power operation, and functional safety features to reduce system cost and complexity in consumer and industrial displays.

FAQ

What is the maximum operating frequency and power efficiency of the R5F10RG8AFB#X0?

The R5F10RG8AFB#X0 operates at up to 24 MHz using its high-speed on-chip oscillator (±1% accuracy), delivering 31 DMIPS. Its active power consumption is 62.5 µA/MHz, and it achieves 0.64 µA in Halt mode with RTC and LVD enabled - making R5F10RG8AFB#X0 ideal for battery-critical applications like utility meters and portable medical devices.

Does the R5F10RG8AFB#X0 support LCD drive without external components?

Yes, the R5F10RG8AFB#X0 integrates a full LCD controller/driver supporting up to 35 segments × 8 commons. It supports capacitor-split, internal-voltage-boost, and resistor-division methods - allowing direct connection to LCD glass without external driver ICs. VL1–VL4 pins provide dedicated bias rails, and COM0–COM7 plus SEG0–SEG35 enable complete display control in R5F10RG8AFB#X0-based designs.

What analog capabilities does the R5F10RG8AFB#X0 offer?

The R5F10RG8AFB#X0 includes a 10-bit ADC with 10 input channels (ANI0–ANI17, ANI20–ANI22), 2.1 µs conversion time, internal 1.45 V reference voltage, and an on-chip temperature sensor. It operates down to 1.6 V supply, enabling accurate analog measurements across its full voltage range - a key capability confirmed in the R5F10RG8AFB#X0 datasheet for sensor interfacing in portable and industrial applications.

Is the R5F10RG8AFB#X0 pin-compatible with other RL78/L12 variants?

Yes, all 48-pin RL78/L12 variants - including R5F10RG8AFB#X0, R5F10RGAAB#X0, and R5F10RGCAF#X0 - share identical 48-pin LFQFP (0.5 mm pitch) packages and pinouts. Differences are limited to flash size (8 KB / 16 KB / 32 KB) and ordering suffixes; no PCB or schematic changes are required when upgrading within this pin-compatible family of R5F10RG8AFB#X0 derivatives.

What safety certifications or features does the R5F10RG8AFB#X0 support?

The R5F10RG8AFB#X0 includes hardware-level safety features aligned with IEC/UL 60730 Class B requirements: flash memory CRC calculation, RAM parity error detection, RAM/SFR write protection, illegal memory access detection, clock frequency monitoring, and ADC self-test. These features are implemented in silicon and documented in the R5F10RG8AFB#X0 datasheet to simplify functional safety certification for household and industrial appliances.