Renesas R5F10RLCAFB#V0

Overview

R5F10RLCAFB#V0 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 halt mode). It delivers 31 DMIPS at 24 MHz and supports 1.6–5.5 V supply for battery-powered LCD applications including smart meters and home appliances.

For engineers reviewing the R5F10RLCAFB#V0 datasheet, R5F10RLCAFB#V0 pinout, R5F10RLCAFB#V0 application, or R5F10RLCAFB#V0 equivalent, key selection criteria include its on-chip LCD drive capability, 32 KB code flash with background data flash erase/program, 10-bit ADC with internal reference, and support for multiple low-power modes including snooze and stop with RAM retention.

Technical Context

The R5F10RLCAFB#V0 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and CISC instruction set enabling 86% of instructions in 1–2 clock cycles. It integrates a high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature) and subsystem clock support via XT1/XT2 pins for RTC accuracy.

Its peripheral set includes an 8-channel timer array unit, UART, two CSI interfaces (SPI-compatible), I²C, DMA controller (2 channels), and safety features compliant with IEC/UL 60730 - including flash CRC, RAM parity check, SFR write protection, and illegal memory access detection.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, consumer-grade (A suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RLAAFB#V0, the R5F10RLCAFB#V0 provides double flash capacity for complex UI or OTA-ready firmware, while R5F10RJCAFA#V0 trades pin count and package size for reduced board area - neither offers pin compatibility, requiring layout changes.

Availability

R5F10RLCAFB#V0 is available at Aetrix Electronics and suitable for smart energy meters, home appliance control panels, and portable medical devices requiring stable component supply, long lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F10RLCAFB#V0 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 targets ultra-low-power LCD-based applications such as utility meters and white goods, integrating high-efficiency processing, on-chip display drivers, and functional safety features in compact packages.

FAQ

What is the maximum operating frequency and core performance of the R5F10RLCAFB#V0?

The R5F10RLCAFB#V0 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS. Its RL78 CPU core executes 86% of instructions in 1–2 clock cycles due to its 3-stage pipeline and optimized CISC architecture, enabling responsive real-time control in LCD applications.

Does the R5F10RLCAFB#V0 support true hardware LCD bias generation without external components?

Yes, the R5F10RLCAFB#V0 integrates a complete LCD controller/driver supporting capacitor split, internal voltage boost, and resistance division methods. With internal boost, it generates required LCD bias voltages directly - eliminating external charge pumps or resistor networks for most 3–5 V applications.

How does the R5F10RLCAFB#V0 achieve ultra-low power consumption in Halt mode?

The R5F10RLCAFB#V0 achieves 0.64 µA Halt mode current by powering down the CPU, flash, and most peripherals while retaining RTC operation, LVD monitoring, and RAM contents. This mode uses the low-speed on-chip oscillator and is ideal for battery-powered devices requiring periodic wake-up events.

What safety certifications or built-in features does the R5F10RLCAFB#V0 support for industrial applications?

The R5F10RLCAFB#V0 includes hardware-level safety features aligned with IEC/UL 60730 Class B: flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access detection, clock frequency monitoring, and ADC self-test - enabling certified functional safety implementations.

Can the R5F10RLCAFB#V0 simultaneously run code from flash and write to data flash?

Yes, the R5F10RLCAFB#V0 supports background operation of its 2 KB data flash memory. Code execution continues uninterrupted during data flash erase or programming cycles, allowing real-time parameter storage (e.g., calibration values or usage logs) without system stalls.