Renesas R5F10WMGAFB#10

Overview

R5F10WMGAFB#10 from Renesas is an 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch) 16-bit RL78/L13 microcontroller with integrated LCD controller/driver, 128 KB flash, 6 KB RAM, and 4 KB data flash. It operates from 1.6 V to 5.5 V, delivers 31 DMIPS at 24 MHz, and achieves ultra-low power consumption down to 71 μA/MHz - optimized for battery-powered LCD-based consumer devices such as smart meters and portable medical displays.

For engineers reviewing the R5F10WMGAFB#10 datasheet, R5F10WMGAFB#10 pinout, R5F10WMGAFB#10 application, or R5F10WMGAFB#10 equivalent, key selection considerations include its 51-segment/8-common LCD drive capability, dual UART + LIN support, 12-channel 10-bit ADC, RTC2 with calendar and alarm, and hardware BGO for concurrent code execution during data flash rewriting.

Technical Context

The R5F10WMGAFB#10 implements the RL78 CPU core - a CISC architecture with 3-stage pipeline and 1 MB address space - enabling deterministic real-time control in resource-constrained LCD applications. Its dual-clock system integrates a high-accuracy ±1.0% on-chip oscillator (selectable up to 24 MHz) and a dedicated 32.768 kHz subsystem clock for RTC2 and low-power STOP/HALT modes.

Peripheral integration includes an 8-channel timer array unit (TAU) with PWM, remote carrier output (REMOOUT), 2-channel comparator with internal/external reference selection, and programmable buzzer/clock output controller supporting frequencies from 256 Hz to 10 MHz - all managed via peripheral I/O redirection register (PIOR) for flexible pin assignment.

Key Specifications

Pinout & Package

80-pin LFQFP (12 × 12 mm, 0.5 mm pitch) package with exposed pad; REGC requires 0.47–1 μF capacitor to VSS. Pin functions are configurable via PIOR register - e.g., P00 supports SO00/TxD0/SEG43, P34 supports RxD3/SEG24, P70–P77 serve as key return inputs KR0–KR7 and TKBO outputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WMEAFB#10, the R5F10WMGAFB#10 provides 167% more flash and 3× more LCD segments for complex UIs; versus R5F10WMGGFB#10, it trades industrial temperature rating for lower unit cost in consumer-grade environments where ambient stays ≤+85°C.

Availability

R5F10WMGAFB#10 is available at Aetrix Electronics and suitable for smart energy meters, portable medical monitors, home appliance control panels, and industrial HMI displays requiring stable component supply across multi-year production cycles.

Supply support for R5F10WMGAFB#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/L13 product line targets ultra-low-power LCD-based applications - designed to replace discrete LCD drivers and legacy 8-bit MCUs while delivering 31 DMIPS performance within strict energy budgets.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F10WMGAFB#10?

The R5F10WMGAFB#10 achieves 31 DMIPS at 24 MHz using its high-accuracy ±1.0% on-chip oscillator. At this speed, active current is specified at 71 μA/MHz (typical), equating to ~1.7 mA total at 24 MHz under VDD = 3.3 V and TA = 25°C - verified in Section 2.1 of R01DS0168EJ0232.

Does the R5F10WMGAFB#10 support hardware-based background data flash rewriting?

Yes, the R5F10WMGAFB#10 supports Background Operation (BGO) for data flash memory. This allows the CPU to execute instructions from program memory while simultaneously rewriting the 4 KB data flash - essential for reliable firmware updates and parameter storage without system interruption.

How many LCD segments and commons does the R5F10WMGAFB#10 drive, and what bias methods are supported?

The R5F10WMGAFB#10 drives up to 51 segment and 8 common outputs. It supports three LCD bias methods: internal voltage boosting (for low-VDD operation), capacitor split (for medium-size displays), and external resistance division (for high-contrast industrial panels) - all selectable via LCD control registers.

Can the R5F10WMGAFB#10 generate IR remote carrier signals natively?

Yes, the R5F10WMGAFB#10 includes dedicated TKBO (Timer KB20 Output) pins - TKBO00, TKBO01-0, TKBO01-1, and TKBO01-2 - which generate precise 38 kHz (or user-defined) carrier waveforms for IR remote control. These are driven by the 16-bit KB20 timer with automatic modulation capability.

What is the function of the REGC pin on the R5F10WMGAFB#10, and how must it be connected?

The REGC pin on the R5F10WMGAFB#10 connects to the internal voltage regulator's stabilization capacitor. It must be tied to VSS via a 0.47 μF to 1 μF ceramic capacitor - as explicitly required in Figure 1-1 and Section 1.3.2 of R01DS0168EJ0232 - to ensure stable LDO operation and prevent LCD flicker or reset instability.