Renesas R5F10RF8AFP#V0

Overview

R5F10RF8AFP#V0 from Renesas is an 8 KB flash, 1 KB RAM, 44-pin LQFP RL78/L12 16-bit microcontroller with integrated LCD controller/driver (up to 39 seg × 4 com), 10-bit ADC (10 channels), RTC, 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 R5F10RF8AFP#V0 datasheet, R5F10RF8AFP#V0 pinout, R5F10RF8AFP#V0 application, or R5F10RF8AFP#V0 equivalent, key selection criteria include its 44-pin LQFP package, 8 KB code flash with 2 KB data flash, 1.6–5.5 V supply range, and on-chip LCD drive supporting capacitor split and internal boost methods.

Technical Context

The R5F10RF8AFP#V0 implements the RL78 CPU core delivering 31 DMIPS at 24 MHz, with 86% of instructions executed in 1–2 clock cycles. Its low-power architecture supports Stop (0.23 µA), Halt (0.64 µA), and active operation (62.5 µA/MHz).

It integrates a dedicated LCD controller supporting up to 39 segments and 4 commons, configurable waveform types (A/B), 16-step contrast adjustment, and blinking control - all managed without CPU intervention via dedicated RAM space and timing circuitry.

Key Specifications

Pinout & Package

Package: 44-pin plastic LQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, tray packaging (#V0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RF8AFP#V0, the R5F10RFAAFP#V0 offers double flash capacity without layout change, while the R5F10RG8AFB#V0 trades package compatibility for higher I/O density and ADC channel count - both retain identical low-power LCD performance and peripheral set.

Availability

R5F10RF8AFP#V0 is available at Aetrix Electronics and suitable for smart metering, portable medical devices, and home appliance control panels requiring stable component supply and long-term industrial lifecycle support.

Supply support for R5F10RF8AFP#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 is engineered for ultra-low-power LCD-based applications, integrating high-efficiency CPU, on-chip LCD controller/driver, and robust safety features to minimize system-level BOM and power consumption.

FAQ

What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F10RF8AFP#V0?

The R5F10RF8AFP#V0 features a high-speed on-chip oscillator rated at 24 MHz with ±1% accuracy across 1.8–5.5 V supply and −20°C to +85°C ambient temperature. This eliminates need for external crystal in cost-sensitive designs while maintaining timing integrity for UART, timers, and LCD frame rates.

Does R5F10RF8AFP#V0 support RTC operation during ultra-low-power Halt mode?

Yes, R5F10RF8AFP#V0 maintains full RTC functionality-including calendar, alarm, and 1 Hz correction output (RTC1HZ)-while consuming only 0.64 µA in Halt mode with LVD enabled. This enables accurate timekeeping in battery-backed applications without waking the CPU.

How many LCD segments and commons does R5F10RF8AFP#V0 support, and what drive methods are available?

R5F10RF8AFP#V0 supports up to 39 segments and 4 commons (39 × 4) or 35 segments and 8 commons (35 × 8). It implements capacitor split (0.12 µA), internal voltage boost (0.63 µA @ 3.0 V), and resistance division drive methods - all selectable via register configuration without external components.

What safety certifications or features does R5F10RF8AFP#V0 include for industrial use?

R5F10RF8AFP#V0 includes hardware CRC calculation for flash memory, RAM parity error detection, SFR write protection, illegal memory access detection, and clock frequency monitoring - all aligned with IEC/UL 60730 Class B requirements for self-test and functional safety in industrial control applications.

Can R5F10RF8AFP#V0 operate from a 1.6 V supply, and what peripherals remain functional at that voltage?

Yes, R5F10RF8AFP#V0 operates down to 1.6 V. At this voltage, the 10-bit ADC (with internal 1.45 V reference), RTC, LCD controller (capacitor split method), and 5 V-tolerant GPIO remain fully functional - enabling reliable operation in single-cell Li-ion or alkaline battery systems.