Renesas R5F10RLAAFB#30

Overview

R5F10RLAAFB#30 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 × 8 com), and ultra-low-power operation (0.64 µA in RTC+LVD halt mode). It targets battery-powered LCD display systems such as smart meters, thermostats, and portable medical devices.

For engineers reviewing the R5F10RLAAFB#30 datasheet, R5F10RLAAFB#30 pinout, R5F10RLAAFB#30 application, or R5F10RLAAFB#30 equivalent, key selection criteria include its 24 MHz high-speed on-chip oscillator (±1% accuracy), 10-bit ADC with internal reference, 8-channel timer array, I²C/SPI/UART interfaces, and IEC 60730-compliant safety features for Class B appliance control.

Technical Context

The R5F10RLAAFB#30 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It supports dual-clock domains: 24 MHz high-speed on-chip oscillator (1.8–5.5 V, −20°C to +85°C) and 32.768 kHz subsystem crystal oscillator for RTC.

Its integrated LCD controller supports capacitor split, internal voltage boost, and resistance division methods with 16-step contrast adjustment and blinking control. Safety mechanisms include flash CRC, RAM parity check, SFR write protection, illegal memory access detection, and clock frequency monitoring - all aligned with IEC 60730 Class B requirements.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, operating ambient temperature −40°C to +85°C (Consumer grade).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RLAAFB#30, R5F10RLCAFB#30 offers identical functionality with updated silicon, while R5F10RFAAFP#30 trades LCD segment count and memory for smaller footprint and lower cost in less demanding display applications.

Availability

R5F10RLAAFB#30 is available at Aetrix Electronics and suitable for smart energy meters, programmable thermostats, portable medical monitors, and industrial panel displays requiring stable component supply and long-term lifecycle support.

Supply support for R5F10RLAAFB#30 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 for cost-sensitive consumer and industrial applications where battery life, display integration, and safety certification are critical design priorities.

FAQ

What is the maximum operating frequency and power consumption of the R5F10RLAAFB#30?

The R5F10RLAAFB#30 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS. In active mode, it consumes 62.5 µA per MHz; in halt mode with RTC and LVD enabled, it draws just 0.64 µA - optimized for battery-powered LCD applications where extended runtime is essential. The R5F10RLAAFB#30 achieves this via multiple low-power modes including stop, snooze, and deep standby.

Does the R5F10RLAAFB#30 support external crystals, and what are the clock source options?

Yes, the R5F10RLAAFB#30 supports external crystals on X1/X2 (main system clock, 1–20 MHz) and XT1/XT2 (subsystem clock, 32.768 kHz). It also integrates a high-speed on-chip oscillator (24 MHz ±1%) and low-speed on-chip oscillator (15 kHz), enabling flexible clocking without external components in many designs. The R5F10RLAAFB#30 allows runtime switching between sources for power/performance trade-offs.

How many LCD segments and commons does the R5F10RLAAFB#30 support, and what drive methods are available?

The R5F10RLAAFB#30 supports up to 39 segment and 8 common outputs, enabling configurations such as 35×8 or 39×4. It provides three LCD drive methods: capacitor split (0.12 µA), internal voltage boost (0.63 µA at 3.0 V), and external resistance division - selectable via register settings. This flexibility allows the R5F10RLAAFB#30 to drive diverse LCD types while minimizing power and external component count.

What safety features does the R5F10RLAAFB#30 include for IEC 60730 compliance?

The R5F10RLAAFB#30 includes hardware-based safety features required for IEC 60730 Class B: flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access detection, clock frequency monitor, and ADC self-test. These are implemented in silicon and do not rely on software polling, reducing certification burden. The R5F10RLAAFB#30 is explicitly qualified for appliance control applications requiring functional safety validation.

Is the R5F10RLAAFB#30 pin-compatible with other RL78/L12 variants like R5F10RFAAFP#30?

No, the R5F10RLAAFB#30 (64-pin LFQFP) is not pin-compatible with R5F10RFAAFP#30 (44-pin LQFP); they differ in package, pin count, and peripheral allocation. However, it is pin-compatible with R5F10RLCAFB#30 (same 64-pin LFQFP, identical memory and peripherals). Pin compatibility must be verified per Renesas' official package drawings - the R5F10RLAAFB#30 shares footprint and signal mapping only with other "RLx" 64-pin variants in the same package family (FB).