Renesas R5F10RBCAFP#30

Overview

R5F10RBCAFP#30 from Renesas is a 32-pin LQFP 7×7 mm ultra-low-power 16-bit RL78/L12 microcontroller with 32 KB flash, 2 KB data flash, 1.5 KB RAM, integrated LCD controller/driver (up to 35 seg × 8 com), and 31 DMIPS performance at 24 MHz. It operates from 1.6 V to 5.5 V and delivers 62.5 µA/MHz active current and 0.64 µA RTC+LVD halt mode for battery-powered LCD applications.

For engineers reviewing the R5F10RBCAFP#30 datasheet, R5F10RBCAFP#30 pinout, R5F10RBCAFP#30 application, or R5F10RBCAFP#30 equivalent, this MCU is selected for its on-chip LCD drive capability, low-voltage operation down to 1.6 V, 10-bit ADC with internal reference, real-time clock with calendar/alarm, and IEC/UL 60730 safety features - critical for medical, home appliance, and industrial HMI designs.

Technical Context

The R5F10RBCAFP#30 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and CISC instruction set enabling 86% of instructions 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 an 8-channel timer array unit, UART, two CSI interfaces (SPI-compatible), I²C, DMA controller (2 channels), and a dedicated LCD controller supporting capacitor split, internal boost, and resistance division methods - all optimized for single-supply, low-power LCD systems requiring minimal external components.

Key Specifications

Pinout & Package

32-pin plastic LQFP (7 × 7 mm, 0.8 mm pitch), RoHS-compliant, with exposed thermal pad not present (non-HWQFN). Pin functions include dual-purpose GPIO with LCD segment/com drivers, analog inputs (ANI0–ANI1), key return (KR0–KR3), and dedicated LCD power pins (VL1–VL4, CAPL/CAPH).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RBCAFP#30, R5F10RBAAFP#30 offers reduced memory at identical form factor for cost-sensitive designs, while R5F10RFCAFP#30 provides scalable I/O and LCD capacity at the expense of larger footprint - enabling tiered product families from entry-level to feature-rich variants.

Availability

R5F10RBCAFP#30 is available at Aetrix Electronics and suitable for smart thermostat displays, portable medical monitors, and industrial panel meters requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for R5F10RBCAFP#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, and power management solutions for automotive, industrial, and IoT markets.

The RL78/L12 product line is designed specifically for ultra-low-power LCD-based human-machine interfaces in consumer, medical, and industrial equipment - emphasizing integration, safety, and battery longevity.

FAQ

What is the maximum operating frequency and power efficiency of the R5F10RBCAFP#30?

The R5F10RBCAFP#30 operates at up to 24 MHz with a high-speed on-chip oscillator delivering 31 DMIPS performance. Its active power consumption is 62.5 µA/MHz, and it achieves 0.64 µA in RTC+LVD halt mode - making it ideal for battery-powered LCD applications where runtime and responsiveness are both critical. This efficiency is validated across the full 1.6 V to 5.5 V supply range.

Does the R5F10RBCAFP#30 support external crystal oscillators, and what are the options?

Yes, the R5F10RBCAFP#30 supports external crystal oscillators via X1/X2 pins for the main system clock (1–20 MHz) and XT1/XT2 pins for the subsystem clock (32.768 kHz). It also supports external clock input on EXCLK and EXCLKS. The on-chip 24 MHz oscillator provides ±1% accuracy over voltage and temperature, eliminating crystal cost where timing tolerance permits.

How many LCD segments and commons does the R5F10RBCAFP#30 support, and what bias methods are available?

The R5F10RBCAFP#30 supports up to 35 segments and 8 commons (35 × 8) or 39 segments and 4 commons (39 × 4), depending on configuration. It implements three LCD bias methods: capacitor split (0.12 µA), internal voltage boost (0.63 µA @ 3.0 V), and external resistance division - allowing optimization for power, contrast, or bill-of-materials simplicity in the R5F10RBCAFP#30 design.

What safety certifications or built-in features does the R5F10RBCAFP#30 provide for appliance applications?

The R5F10RBCAFP#30 includes hardware-level safety features required for IEC/UL 60730 Class B compliance: flash memory CRC calculation, RAM parity error checking, SFR write protection, illegal memory access detection, clock frequency monitor, and ADC self-test. These features reduce software certification burden and support fail-safe operation in washing machines, ovens, and HVAC controllers using the R5F10RBCAFP#30.

Can the R5F10RBCAFP#30 perform simultaneous ADC conversions and LCD refresh without CPU intervention?

Yes, the R5F10RBCAFP#30 supports background operation of its 10-bit ADC and independent LCD controller. Combined with its 2-channel DMA controller, it can transfer ADC results to memory and update LCD RAM without CPU involvement - freeing the RL78 core for UI processing or communication tasks while maintaining precise timing for both functions in the R5F10RBCAFP#30 implementation.