Renesas R5F10WMAAFB#10

Overview

R5F10WMAAFB#10 from Renesas is an 80-pin LFQFP ultra-low-power 16-bit RL78/L13 MCU with integrated LCD controller/driver, 64 KB flash, 4 KB data flash, 4 KB RAM, and operation from 1.6 V to 5.5 V. It delivers 31 DMIPS at 24 MHz, supports 12-channel 8/10-bit ADC, dual comparators, RTC2 with calendar, and real-time LCD driving for battery-powered instrumentation.

For engineers reviewing the R5F10WMAAFB#10 datasheet, R5F10WMAAFB#10 pinout, R5F10WMAAFB#10 application, or R5F10WMAAFB#10 equivalent, key selection criteria include its 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch) package, consumer-grade temperature range (–40°C to +85°C), integrated LCD segment/common drive capability (up to 51 segments / 8 commons), and support for UART3, CSI, I²C, and remote control output (REMOOUT).

Technical Context

The R5F10WMAAFB#10 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction execution time (0.04167 µs at 24 MHz up to 30.5 µs at 32.768 kHz). Its power management includes HALT, STOP, and SNOOZE modes enabling 71 µA/MHz active current and 0.61 µA RTC+LVD standby.

It integrates a dedicated LCD controller supporting internal voltage boosting, capacitor split, or external resistor division methods; a 4-channel DMA controller; 16-bit timer array (8 channels); 16-bit timer KB20 for IH-only PWM; and dual comparators with selectable internal/external reference inputs.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, consumer-grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WMAAFB#10, R5F10WMCAF#10 offers 32 KB more flash and 2 KB more RAM for enhanced feature scalability, while R5F10WMEAFB#10 reduces memory capacity to lower unit cost-both retain identical LCD, timer, communication, and power features in the same footprint.

Availability

R5F10WMAAFB#10 is available at Aetrix Electronics and suitable for smart energy meters, portable medical devices, home appliance control panels, and industrial sensor nodes requiring stable component supply across long product lifecycles.

Supply support for R5F10WMAAFB#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The RL78/L13 product line targets ultra-low-power LCD-based applications, combining true low-power operation, integrated display control, and robust peripheral sets for cost-sensitive, battery-operated human interface devices.

FAQ

What is the maximum LCD segment count supported by the R5F10WMAAFB#10?

The R5F10WMAAFB#10 supports up to 51 segment signal outputs and 8 common signal outputs when configured for 8-common operation. This enables driving alphanumeric or custom-segment displays with high multiplexing efficiency. The LCD controller supports three bias methods - internal voltage boosting, capacitor split, and external resistor division - allowing optimization for display type and power budget. All segment and common pins are assigned to dedicated port pins as defined in the 80-pin pin configuration.

Does the R5F10WMAAFB#10 support hardware remote control (IR) carrier generation?

Yes, the R5F10WMAAFB#10 includes a dedicated REMOOUT pin (P30) capable of generating standard infrared carrier frequencies such as 38 kHz directly from the timer array unit. This eliminates the need for external encoder ICs or discrete oscillators in remote control applications. The carrier waveform is generated in hardware using timer output functions, and the pin can be synchronized with data modulation from software or peripheral modules like UART or CSI.

What are the operating voltage and temperature specifications for the R5F10WMAAFB#10?

The R5F10WMAAFB#10 operates from a single supply of 1.6 V to 5.5 V over an ambient temperature range of –40°C to +85°C, qualifying it for consumer-grade applications. Its power management features - including HALT, STOP, and SNOOZE modes - achieve as low as 71 µA/MHz active current and 0.61 µA in RTC+LVD standby. The device uses a consumer-grade marking ('A' suffix), distinguishing it from industrial-grade variants ('G' suffix) rated to +105°C.

How many UART interfaces does the R5F10WMAAFB#10 provide, and which support LIN bus?

The R5F10WMAAFB#10 provides three UART interfaces: UART0, UART1, and UART2. UART0 and UART1 both support LIN bus protocol (LIN 2.1/2.2 compliant) with automatic sync-break detection and checksum handling. UART2 is a standard UART without LIN-specific hardware acceleration. All three UARTs operate independently and can be used simultaneously - for example, UART0 for LIN diagnostics, UART1 for local display comms, and UART2 for RS-485 gateway functions.

Can the R5F10WMAAFB#10 perform background data flash writes while executing application code?

Yes, the R5F10WMAAFB#10 supports Background Operation (BGO) for its 4 KB data flash memory. While rewriting data flash, the CPU can continue executing instructions from code flash memory without interruption. This capability is essential for applications requiring persistent parameter storage or event logging during normal operation - such as recording calibration data in a medical device or storing usage statistics in a smart meter - without freezing system responsiveness.