Renesas R5F10RFAAFP#30

Overview

R5F10RFAAFP#30 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 with calendar/alarm, and ultra-low-power operation (62.5 µA/MHz active, 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 R5F10RFAAFP#30 datasheet, R5F10RFAAFP#30 pinout, R5F10RFAAFP#30 application, or R5F10RFAAFP#30 equivalent, key selection criteria include its 44-pin LQFP-0.8 mm pitch package, 1.6–5.5 V supply range, on-chip 24 MHz ±1% oscillator, and support for capacitor-split LCD drive - all confirmed for this exact ordering part number per Renesas DS R01DS0157EJ0223.

Technical Context

The R5F10RFAAFP#30 implements the 16-bit RL78 CPU core with Harvard architecture, delivering 31 DMIPS at 24 MHz and executing 86% of instructions in 1–2 clock cycles. Its low-power design integrates a voltage regulator with REGC bypass, POR/LVD reset management, and snooze mode for selective peripheral wake-up.

It features a dedicated LCD controller supporting waveform types A/B, 16-step contrast adjustment, blinking control, and three drive methods (capacitor split, internal boost, resistance division). The analog subsystem includes an on-chip temperature sensor, 1.45 V internal reference, and 2.1 µs ADC conversion time - all operational down to 1.6 V.

Key Specifications

Pinout & Package

44-pin plastic LQFP (10 × 10 mm, 0.8 mm pitch), JEDEC MS-026 variant, with exposed pad not present. Pin functions validated per Renesas DS R01DS0157EJ0223 Figure 1-2 (44-pin top view) and Table 1-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RFAAFP#30, R5F10RFCAFP#30 offers scalable code storage without layout change, while R5F10RGAFA#30 trades package compatibility for expanded I/O - making the R5F10RFAAFP#30 optimal for cost-sensitive, space-constrained LCD HMI designs requiring exactly 8 KB flash and 44-pin routing.

Availability

R5F10RFAAFP#30 is available at Aetrix Electronics and suitable for smart energy meters, programmable thermostats, and portable medical monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F10RFAAFP#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 solutions for automotive, industrial, and IoT markets.

The RL78/L12 product line is engineered for ultra-low-power LCD-based applications, integrating display drivers, precision analog, and robust safety features to eliminate external components in cost-sensitive consumer and industrial HMI designs.

FAQ

What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F10RFAAFP#30?

The R5F10RFAAFP#30 features a high-speed on-chip oscillator rated at 24 MHz with ±1% accuracy across the full operating voltage range (1.8 V to 5.5 V) and temperature range (−20°C to +85°C). This specification is confirmed in Renesas DS R01DS0157EJ0223 Section 1.1 and eliminates the need for an external crystal in many applications where timing tolerance permits.

Does R5F10RFAAFP#30 support capacitor-split LCD driving, and what is its typical segment current?

Yes, R5F10RFAAFP#30 supports capacitor-split LCD driving as one of three selectable methods (alongside internal voltage boost and resistance division). Its typical segment current in capacitor-split mode is 0.12 µA, enabling ultra-low-power operation ideal for battery-powered LCD applications - a value explicitly specified in the "Ultra-Low Power Technology" section of the R5F10RFAAFP#30 datasheet.

What are the flash and RAM capacities of R5F10RFAAFP#30, and how is data flash endurance rated?

R5F10RFAAFP#30 integrates 8 KB of code flash memory, 2 KB of data flash memory, and 1 KB of RAM. The data flash is rated for 1 million erase cycles (typical), with erase/programming supported across the full 1.8 V to 5.5 V supply range - enabling reliable field firmware updates and parameter storage without external EEPROM.

Can R5F10RFAAFP#30 operate from a 1.6 V supply, and which peripherals remain functional at that voltage?

Yes, R5F10RFAAFP#30 operates from 1.6 V to 5.5 V. At 1.6 V, the 10-bit ADC remains fully functional with internal 1.45 V reference, the RTC continues accurate timekeeping, and the LCD controller supports resistance-division drive mode - all confirmed in the "1.6 V to 5.5 V operation" and "ADC" sections of the official datasheet.

What safety certifications or built-in features does R5F10RFAAFP#30 support for IEC 60730 compliance?

R5F10RFAAFP#30 includes multiple hardware-level safety features aligned with IEC 60730 Class B requirements: flash memory CRC calculation engine, RAM parity error checking, SFR write protection, illegal memory access detection, clock frequency monitor, and ADC self-test capability - all documented in the "Safety Features" subsection of the R5F10RFAAFP#30 datasheet.