Renesas R5F10WMAAFB#30

Overview

R5F10WMAAFB#30 from Renesas is an 80-pin RL78/L13 16-bit microcontroller with integrated LCD controller/driver, 128 KB flash, 8 KB RAM, and 4 KB data flash-designed for ultra-low-power LCD-based applications including portable medical devices, smart meters, and industrial HMI panels operating from 1.6 V to 5.5 V.

For engineers reviewing the R5F10WMAAFB#30 datasheet, R5F10WMAAFB#30 pinout, R5F10WMAAFB#30 application, or R5F10WMAAFB#30 equivalent, key selection criteria include its 51-segment/8-common LCD drive capability, 12-channel 10-bit ADC, dual comparator support, RTC2 with calendar function, and 32.768 kHz subsystem clock accuracy for time-critical embedded timing.

Technical Context

The R5F10WMAAFB#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz while supporting configurable instruction execution times from 0.04167 µs (24 MHz HS oscillator) to 30.5 µs (32.768 kHz subsystem clock). Its memory map spans 1 MB address space with banked 8-bit general-purpose registers.

Power management includes HALT, STOP, and SNOOZE modes enabling operation as low as 71 µA/MHz active current and 0.61 µA in RTC+LVD retention mode. The on-chip voltage detector offers 14 selectable reset/interrupt thresholds between 1.67 V and 4.06 V.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, consumer-grade temperature range (−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#30, the R5F10WMCAF#30 offers balanced memory reduction without peripheral trade-offs, while R5F10WMEAFB#30 delivers significant cost savings at the expense of flash/RAM headroom-making both viable alternatives depending on firmware scale and lifecycle requirements.

Availability

R5F10WMAAFB#30 is available at Aetrix Electronics and suitable for portable medical devices, smart energy meters, and industrial HMI panels requiring stable component supply across extended production lifecycles.

Supply support for R5F10WMAAFB#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L13 product line is engineered specifically for ultra-low-power LCD-based applications, integrating precision timing, analog sensing, and human-machine interface peripherals into a single compact MCU platform.

FAQ

What is the maximum LCD segment count supported by the R5F10WMAAFB#30?

The R5F10WMAAFB#30 supports up to 51 segment outputs and 8 common outputs, enabling a maximum configuration of 408 segments (51 × 8). This is achieved using the internal voltage boosting method, capacitor split method, or external resistance division method-all selectable via software configuration. The R5F10WMAAFB#30 achieves this without requiring external LCD bias components, simplifying design for high-resolution segmented displays.

Does the R5F10WMAAFB#30 support background data flash rewriting?

Yes, the R5F10WMAAFB#30 supports background operation (BGO) for data flash memory, allowing the CPU to execute instructions from program memory while simultaneously rewriting the 4 KB data flash. This capability enables seamless firmware updates, parameter storage, or calibration data logging without interrupting real-time operations-a critical feature for uninterrupted operation in medical or metering applications using the R5F10WMAAFB#30.

What are the power supply requirements for the R5F10WMAAFB#30?

The R5F10WMAAFB#30 operates from a single supply voltage of 1.6 V to 5.5 V across its full temperature range of −40°C to +85°C. It requires a 0.47 µF to 1 µF capacitor connected between the REGC pin and VSS to stabilize the internal voltage regulator. This wide input range supports direct connection to primary batteries, supercapacitors, or regulated rails-making the R5F10WMAAFB#30 suitable for diverse low-power embedded systems.

How many analog input channels does the R5F10WMAAFB#30 provide?

The R5F10WMAAFB#30 integrates a 10-bit A/D converter with 12 analog input channels (ANI0 through ANI25, excluding reserved pins), plus internal reference voltage (1.45 V) and temperature sensor support. These inputs are distributed across Ports 1, 2, and 3, enabling simultaneous monitoring of multiple sensors-such as battery voltage, ambient temperature, and load current-in applications like smart meters or portable diagnostics where the R5F10WMAAFB#30 serves as the central measurement hub.

Is the R5F10WMAAFB#30 pin-compatible with other RL78/L13 variants?

Yes, the R5F10WMAAFB#30 is pin-compatible with all other 80-pin RL78/L13 variants in the same LFQFP-80 package (e.g., R5F10WMCAF#30, R5F10WMEAFB#30), sharing identical pin count, pitch (0.5 mm), and mechanical footprint. This allows drop-in replacement during prototyping or production ramp-up when memory or feature requirements change-provided PCB layout accommodates the shared 80-pin LFQFP outline and REGC decoupling requirement used by the R5F10WMAAFB#30.