Renesas R5F10RLAGFB#10

Overview

R5F10RLAGFB#10 from Renesas is a 64-pin LFQFP-packaged 16-bit RL78/L12 microcontroller with 32 KB flash, 2 KB data flash, 1.5 KB RAM, integrated LCD controller/driver (up to 39 seg × 4 com), and ultra-low-power operation (0.64 µA in RTC+LVD mode). It targets battery-powered LCD display systems such as smart meters, thermostats, and industrial HMI panels.

For engineers reviewing the R5F10RLAGFB#10 datasheet, R5F10RLAGFB#10 pinout, R5F10RLAGFB#10 application, or R5F10RLAGFB#10 equivalent, key selection criteria include its 64-pin LFQFP-0.5 mm pitch package, 32 KB code flash with background data flash erase/program, 10-bit ADC with internal reference, and support for capacitor-split and internal-boost LCD drive methods.

Technical Context

The R5F10RLAGFB#10 implements the 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 dual power domains (VDD/EVDD, VSS/EVSS) for noise-sensitive LCD applications and supports peripheral I/O redirection via PIOR register.

Its timing subsystem includes a high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature), low-speed on-chip oscillator (15 kHz), 32.768 kHz crystal subsystem clock, real-time clock with calendar/alarm, and eight 16-bit timer channels - enabling precise timekeeping and PWM generation without external components.

Key Specifications

Pinout & 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 R5F10RLAGFB#10, R5F10RLCGFB#10 offers identical functionality at lower memory cost, while R5F10RJCGFA#10 trades pin count and dual-domain power for smaller footprint - making the former ideal for scalable firmware, the latter for space-constrained non-noise-critical displays.

Availability

R5F10RLAGFB#10 is available at Aetrix Electronics and suitable for smart energy meters, industrial thermostats, portable medical devices, and appliance control panels requiring stable component supply across extended product lifecycles.

Supply support for R5F10RLAGFB#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 delivers ultra-low-power, LCD-optimized MCUs targeting battery-operated consumer and industrial display applications with integrated timing, safety, and human-interface features.

FAQ

What is the maximum operating frequency and performance of the R5F10RLAGFB#10?

The R5F10RLAGFB#10 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS of processing performance. Its RL78 CPU core executes 86% of instructions in just 1–2 clock cycles due to its optimized 3-stage pipeline and CISC Harvard architecture - enabling responsive real-time control in LCD-based systems without external clock components.

Does the R5F10RLAGFB#10 support true low-power operation with RTC active?

Yes, the R5F10RLAGFB#10 achieves 0.64 µA in Halt mode with both RTC and low-voltage detection (LVD) enabled - verified under industrial temperature conditions (−40°C to +105°C). This ultra-low quiescent current allows decade-long battery operation in applications like utility meters and portable instruments where periodic wake-up and timekeeping are essential.

How does the LCD controller in the R5F10RLAGFB#10 reduce external component count?

The R5F10RLAGFB#10 integrates a full LCD controller/driver supporting up to 39 segments and 8 commons, with selectable drive methods (capacitor-split, internal-boost, resistor-division). This eliminates the need for external LCD driver ICs and associated boost capacitors or resistors - reducing BOM cost, PCB area, and design complexity in display-centric applications.

What safety features does the R5F10RLAGFB#10 include for certified applications?

The R5F10RLAGFB#10 includes hardware-level safety features required for IEC/UL 60730 compliance: flash memory CRC calculation, RAM parity error checking, SFR write protection, illegal memory access detection, clock frequency monitoring, and ADC self-test. These features enable robust functional safety implementation in white goods, medical devices, and industrial controls without external supervision circuitry.

Can the R5F10RLAGFB#10 operate from a single 3.0 V battery while driving an LCD?

Yes, the R5F10RLAGFB#10 supports 1.6–5.5 V operation and provides dedicated VL1–VL4 LCD power outputs. Using the internal voltage boost method, it drives LCDs from a single 3.0 V supply with only 0.63 µA additional current - confirmed in the datasheet. Combined with its capacitor-split method option, this enables flexible single-cell or multi-cell battery designs for portable LCD products.