Renesas R5F10RBAAFP#10

Overview

R5F10RBAAFP#10 from Renesas is an 8 KB flash, 1 KB RAM, 32-pin LQFP RL78/L12 microcontroller with integrated LCD controller/driver (up to 35 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 R5F10RBAAFP#10 datasheet, R5F10RBAAFP#10 pinout, R5F10RBAAFP#10 application, or R5F10RBAAFP#10 equivalent, key selection factors include its 32-pin LQFP-0.8 mm pitch package, 1.6–5.5 V supply range, on-chip LCD bias generation, and support for capacitor-split LCD drive method with 16-step contrast control.

Technical Context

The R5F10RBAAFP#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 (24 MHz ±1% over voltage/temperature) and supports snooze mode for low-latency wake-up from ultra-low-power states.

Its peripheral set includes UART, two CSI (SPI-compatible) interfaces, I²C, 8-channel 16-bit timer array, 12-bit interval timer, windowed watchdog timer, and DMA controller with two channels. The LCD controller supports waveform types A/B, blinking, and internal voltage boost or capacitor-split drive methods.

Key Specifications

Pinout & Package

Package: 32-pin plastic LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, tray packaging (#10).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RFAAFP#10, the R5F10RBAAFP#10 offers identical low-power performance and LCD capability in a smaller 32-pin footprint, while R5F10RB8AFP#10 removes data flash to reduce cost-making it ideal for fixed-function, non-updatable applications.

Availability

R5F10RBAAFP#10 is available at Aetrix Electronics and suitable for smart energy meters, portable medical displays, and home appliance control panels requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F10RBAAFP#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 MCUs optimized for LCD-based consumer and industrial applications, integrating LCD controllers, precision RTC, and ultra-low-power modes without sacrificing performance.

FAQ

What is the maximum operating frequency and power consumption of the R5F10RBAAFP#10?

The R5F10RBAAFP#10 operates at up to 24 MHz using its on-chip high-speed oscillator, delivering 31 DMIPS. Its active power consumption is 62.5 µA per MHz. In Halt mode-with RTC and low-voltage detection enabled-it draws only 0.64 µA, making it ideal for battery-critical applications. The R5F10RBAAFP#10 achieves this efficiency through RL78's ultra-low-leakage process and dynamic power gating.

Does the R5F10RBAAFP#10 support external crystal oscillators?

Yes, the R5F10RBAAFP#10 supports external crystals on X1/X2 pins for main system clock (1–20 MHz) and XT1/XT2 pins for subsystem clock (32.768 kHz). However, its 24 MHz on-chip oscillator provides ±1% accuracy across voltage and temperature-often eliminating the need for external crystals in cost- and space-constrained designs. The R5F10RBAAFP#10 retains full functionality with either clock source.

How many LCD segments and commons can the R5F10RBAAFP#10 drive?

The R5F10RBAAFP#10 supports up to 35 segments × 8 commons or 39 segments × 4 commons, depending on configuration. As a 32-pin device, it implements the lower end of the RL78/L12 family's LCD capability-specifically 35 seg × 4 com or 39 seg × 4 com using capacitor-split drive. All LCD drive functionality, including contrast control and blinking, is managed entirely on-chip without external components. This capability is fully implemented in the R5F10RBAAFP#10.

What safety certifications does the R5F10RBAAFP#10 support?

The R5F10RBAAFP#10 includes hardware-level safety features aligned with IEC 60730 Class B and UL 60730 requirements, including flash memory CRC calculation, RAM parity error detection, SFR write protection, illegal memory access monitoring, and clock frequency detection. These features enable certified functional safety compliance in household appliances and industrial controls without requiring external supervision circuits. The R5F10RBAAFP#10 integrates these capabilities natively.

Is the R5F10RBAAFP#10 pin-compatible with other RL78/L12 variants?

No-the R5F10RBAAFP#10 is a 32-pin LQFP device and is not pin-compatible with 44-, 48-, 52-, or 64-pin RL78/L12 variants like R5F10RFAAFP#10 or R5F10RLAANB. Pin compatibility exists only within the same pin-count group (e.g., R5F10RB8AFP#10 and R5F10RBAAFP#10 share identical 32-pin LQFP-0.8 mm footprints and signal mapping). Migration between pin counts requires PCB redesign. The R5F10RBAAFP#10 maintains consistent pinout across its 32-pin memory variants.