Renesas R5F10RLAGFB#X0

Overview

R5F10RLAGFB#X0 from Renesas is a 64-pin LFQFP, 32 KB flash, 2 KB data flash, 1.5 KB RAM RL78/L12 16-bit microcontroller with integrated LCD controller/driver (up to 39 seg × 4 com or 35 seg × 8 com), 10-bit ADC (10 channels), RTC with calendar/alarm, 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 R5F10RLAGFB#X0 datasheet, R5F10RLAGFB#X0 pinout, R5F10RLAGFB#X0 application, or R5F10RLAGFB#X0 equivalent, key selection criteria include its industrial-grade temperature range (−40°C to +105°C), on-chip voltage regulator support for LCD bias (VL1–VL4), dual crystal oscillator inputs (X1/X2 and XT1/XT2), and hardware CRC engine for IEC 60730 compliance.

Technical Context

The R5F10RLAGFB#X0 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It supports multiple clock sources: high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature), external crystal (1–20 MHz main, 32.768 kHz subsystem), and low-speed internal oscillator (15 kHz).

Its peripheral set includes two CSI interfaces (SPI-compatible), one UART, one I²C, eight 16-bit timer channels, DMA controller (2 channels), and programmable buzzer outputs (PCLBUZ0/PCLBUZ1). The LCD controller supports capacitor split, internal boost, and resistance division methods with 16-step contrast control and blinking function.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, industrial temperature 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 R5F10RLCGFB#X0, the R5F10RLAGFB#X0 offers double flash capacity for complex UI or firmware-over-the-air readiness; versus R5F10RJCGFA#X0, it delivers 10 additional I/O pins and enhanced LCD drive (39 seg vs. 36 seg), enabling larger displays and more robust HMI functionality.

Availability

R5F10RLAGFB#X0 is available at Aetrix Electronics and suitable for smart energy metering, portable medical monitoring, and industrial HMI applications requiring stable component supply, long-term lifecycle assurance, and industrial-temperature-grade reliability.

Supply support for R5F10RLAGFB#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 is engineered for ultra-low-power LCD-based human-machine interfaces, integrating high-efficiency CPU, comprehensive LCD driving, and functional safety features for metering and portable equipment.

FAQ

What is the maximum operating frequency and power consumption of the R5F10RLAGFB#X0?

The R5F10RLAGFB#X0 operates at up to 24 MHz using its high-speed on-chip oscillator (±1% accuracy across 1.8–5.5 V and −20°C to 85°C). At full speed, it consumes 62.5 µA/MHz. In Halt mode with RTC and LVD active, it draws just 0.64 µA - making it ideal for battery-critical applications. The R5F10RLAGFB#X0 achieves this via RL78's ultra-low-leakage process and dynamic clock gating.

Does the R5F10RLAGFB#X0 support external crystal oscillators for both main and subsystem clocks?

Yes, the R5F10RLAGFB#X0 supports dual crystal inputs: X1/X2 for the main system clock (1–20 MHz) and XT1/XT2 for the subsystem clock (32.768 kHz). This enables precise RTC operation while allowing flexible main clock selection - critical for time-sensitive applications like energy metering. The R5F10RLAGFB#X0 also accepts external clock signals on EXCLK and EXCLKS pins as alternatives.

How many LCD segments and commons does the R5F10RLAGFB#X0 support, and what drive methods are available?

The R5F10RLAGFB#X0 supports up to 39 segment outputs (SEG0–SEG38) and 8 common outputs (COM0–COM7), enabling configurations such as 35 seg × 8 com or 39 seg × 4 com. It supports three LCD drive methods: capacitor split, internal voltage boost (with CAPH/CAPL), and external resistance division - all selectable in firmware. The R5F10RLAGFB#X0 includes dedicated VL1–VL4 bias rails and 16-step contrast adjustment.

What safety features does the R5F10RLAGFB#X0 include for IEC 60730 compliance?

The R5F10RLAGFB#X0 integrates hardware CRC calculation for flash memory, RAM parity error detection, SFR write protection, illegal memory access detection, clock frequency monitoring, and ADC self-test - all required for Class B compliance under IEC 60730. These features are implemented in silicon and require no software overhead. The R5F10RLAGFB#X0 is certified for use in household and similar appliances requiring functional safety.

Can the R5F10RLAGFB#X0 perform background data flash writes while executing code from main flash?

Yes, the R5F10RLAGFB#X0 supports background operation of its 2 KB data flash memory: erase and programming can occur concurrently with code execution from main flash. This enables seamless firmware updates, parameter logging, or calibration storage without interrupting real-time tasks. The R5F10RLAGFB#X0 includes a flash shield window function to prevent accidental writes, and data flash endurance is rated at 1 million erase cycles.