Renesas R5F10RF8AFP#10

Overview

R5F10RF8AFP#10 from Renesas is an 8 KB flash, 1 KB RAM, 44-pin LQFP RL78/L12 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, thermostats, and portable medical devices.

For engineers reviewing the R5F10RF8AFP#10 datasheet, R5F10RF8AFP#10 pinout, R5F10RF8AFP#10 application, or R5F10RF8AFP#10 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#10 implements the 16-bit RL78 CPU core delivering 31 DMIPS at 24 MHz, with Harvard architecture, 3-stage pipeline, and 86% of instructions executed in 1–2 clock cycles. It integrates a high-speed on-chip oscillator (±1% accuracy from 1.8–5.5 V and −20°C to +85°C) and supports snooze mode for low-latency wake-up from ultra-low-power states.

Its peripheral set includes UART, I²C, two CSI/SPI interfaces, DMA (2 channels), 8-channel 16-bit timer array, 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: 44-pin plastic LQFP (10 × 10 mm, 0.8 mm pitch), RoHS-compliant, tray-packaged (#10).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RF8AFP#10, R5F10RFAAFP#10 offers double flash capacity with zero hardware change, while R5F10RG8AFB#10 trades package compatibility for increased I/O and key-return flexibility in space-constrained designs.

Availability

R5F10RF8AFP#10 is available at Aetrix Electronics and suitable for smart energy meters, programmable thermostats, and portable medical monitors requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for R5F10RF8AFP#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 true low-power performance for LCD-based human-interface applications, integrating LCD drivers, RTC, and safety features into compact packages optimized for cost-sensitive, battery-operated devices.

FAQ

What is the maximum operating frequency and processing performance of the R5F10RF8AFP#10?

The R5F10RF8AFP#10 operates at up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS. Its 16-bit RL78 core executes 86% of instructions in 1–2 clock cycles, enabling deterministic real-time response in display and sensor control applications. The R5F10RF8AFP#10 achieves this performance across its full 1.6–5.5 V supply range.

Does the R5F10RF8AFP#10 support LCD driving with internal voltage boosting?

Yes, the R5F10RF8AFP#10 supports LCD operation using the internal voltage boost method, delivering 0.63 µA typical current at VDD = 3.0 V. It also supports capacitor-split and resistance-division methods, allowing flexible biasing for diverse LCD glass types. The R5F10RF8AFP#10 configures drive method and contrast (16-step) via dedicated registers.

What low-power modes are available on the R5F10RF8AFP#10, and what is the lowest current draw?

The R5F10RF8AFP#10 offers Stop mode (0.23 µA, RAM retained) and Halt mode (0.64 µA, RTC + LVD active). Snooze mode enables ultra-fast wake-up from Halt with peripheral-triggered entry/exit. These modes are validated over −40°C to +85°C and support battery life extension in always-on display applications. The R5F10RF8AFP#10 maintains full RTC functionality in Halt mode.

Can the R5F10RF8AFP#10 perform self-programming of its flash memory?

Yes, the R5F10RF8AFP#10 supports self-programming of both code flash and data flash using the flash shield window function for secure write/erase protection. Code flash block size is 1 KB; data flash supports background operation with 1 million erase cycles. This capability enables field firmware updates and nonvolatile parameter storage without external EEPROM. The R5F10RF8AFP#10 implements flash CRC for integrity verification after programming.

Is the R5F10RF8AFP#10 compliant with functional safety standards for appliance control?

Yes, the R5F10RF8AFP#10 includes hardware-level safety features aligned with IEC/UL 60730 Class B requirements: flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access detection, clock frequency monitor, and ADC self-test. These features are documented in Renesas' functional safety manual R01US0094EJ0300 and enable certified implementation in white goods and medical displays. The R5F10RF8AFP#10 is qualified for consumer-grade operation (−40°C to +85°C).