Renesas Electronics America Inc R5F10WMAGFB#10

Product summary R5F10WMAGFB#10 RL78/L13 Microcontroller

The R5F10WMAGFB#10 is a member of the RL78/L13 microcontroller family from Renesas Electronics, designed specifically for energy-efficient LCD-based applications. It features a 16-bit RL78 core running at up to 24 MHz, integrated 16KB code flash memory, and an 80-pin LQFP package (12x12mm). The RL78/L13 series is recognized for its true low-power operation, wide voltage range (1.6V–5.5V), and a high degree of on-chip peripheral integration, making it an excellent fit for both consumer and industrial embedded system demands where display control, low standby power, and robust connectivity are required.

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Core characteristics and design of R5F10WMAGFB#10 RL78/L13

The R5F10WMAGFB#10 incorporates an advanced RL78 CISC core with a 3-stage pipeline, offering minimum instruction execution times down to 0.04167 μs at 24 MHz. It supports flexible clock operation from a high-speed on-chip oscillator (1–48 MHz) with ±1% accuracy across temperature and voltage range. The microcontroller delivers up to 31 DMIPS at full speed and provides versatile power-saving modes: HALT, STOP, and SNOOZE, facilitating optimal energy consumption based on engineering requirements.

Addressing system integration, the core features a 1MB linear address space, 1–8KB on-chip RAM, and 16–128KB flash options across the series. Key architectural enhancements include an on-chip debug interface (for development), a multiplier/divider/multiply-accumulator unit for signal processing, and a 4-channel DMA controller for efficient data transfer with minimal CPU overhead.

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Memory organization and code handling in R5F10WMAGFB#10 RL78/L13

For embedded applications demanding robust and flexible code/data management, R5F10WMAGFB#10 incorporates both program and data flash memory. Specifically, the device integrates 16KB code flash with 1KB erase blocks, block-erase/rewrite protection (security), and an on-chip debug function (development only). The flash supports self-programming features with a boot swap and flash shield window for field updates.

A 4KB data flash, supporting typical 1,000,000 rewrite cycles (at 1.8V–5.5V), enables background operation—allowing code execution during data flash writing. This supports robust logging, parameter storage, and in-field customization while ensuring program continuity.

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Power supply, voltage ranges, and energy-saving modes in R5F10WMAGFB#10 RL78/L13

A defining trait of the R5F10WMAGFB#10 is its ultra-low power consumption. Operating current can reach as low as 71 μA/MHz in active mode, and only 0.61 μA is required for the integrated real-time clock (RTC) plus low-voltage detector in STOP mode, making it particularly suitable for battery-powered and always-on display applications.

The supply voltage flexibility (1.6V–5.5V) provides compatibility with a wide range of power sources, including single-cell lithium or multi-cell alkaline designs. Advanced internal brown-out (LVD) and power-on-reset (POR) circuits add resilience against supply interruptions, ensuring safe system startup and operation down to the lowest supported voltage. Thirteen selectable LVD thresholds allow for fine-grained power system integration.

Multiple clock and power-down modes (STOP, HALT, and SNOOZE) allow selective disabling of system components, with real-time clock and key wakeup sources available for responsive yet low-energy operation—a typical requirement for LCD metering, handhelds, or instrumentation.

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Peripheral integration and interface options of R5F10WMAGFB#10 RL78/L13

The R5F10WMAGFB#10 is engineered for connectivity and complex peripheral control. It includes:

Multiple communication interfaces: simplified SPI (CSI, 2ch), UARTs (4ch, LIN bus support), and I²C (up to 2 channels for simplified and standard/fast/fast-plus I2C modes).

Flexible timer array: 8x 16-bit timers (with advanced PWM/remocon features), 1x 16-bit IH-timer for PWM, a 12-bit interval timer, plus real-time calendar and watchdog timers.

Scalable I/O: 49–65 GPIO pins with N-ch open-drain (VDD/high-voltage tolerant), TTL input buffer options, and programmable pull-ups. The I/O pins can interface directly with 1.8V, 2.5V, or 3V external logic, facilitating mixed-voltage system design.

Peripheral I/O redirection (PIOR): Allows engineers to dynamically assign alternate peripheral functions to various pins, optimizing board layout.

On-chip key interrupt and clock output/buzzer controller to enhance user interface and drive requirements.

In addition, the device can interface with a variety of other digital and analog blocks, providing a central control backbone in diverse embedded system architectures.

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Analog capabilities such as A/D conversion and comparator functions in R5F10WMAGFB#10 RL78/L13

The analog subsystem of the R5F10WMAGFB#10 includes:

A/D converter: 8/10-bit resolution, 9–12 input channels (model/configuration dependent), selectable internal/external reference voltages, and integrated temperature sensor functionality for system monitoring and feedback.

Comparator: Two channels, supporting three operation modes (high-speed, low-speed, window mode). The comparator can use both internal and external reference voltages, extending utility in power monitoring, touch/button detection, threshold-based alerting, or other precision comparator applications.

The analog functionality—together with robust power management—makes R5F10WMAGFB#10 suitable for applications requiring sensor interfacing, battery monitoring, or adaptive analog front-end control.

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LCD driving features and setup in R5F10WMAGFB#10 RL78/L13

A standout feature of the RL78/L13 family—exemplified in R5F10WMAGFB#10—is its sophisticated LCD controller/driver. It supports up to 51 segment outputs (32 to 51, model-dependent) and up to 8 common outputs, suitable for complex multi-segment monochrome displays.

Key engineering features include:

Selectable voltage generation methods: Internal voltage boosting, capacitor split, and external resistor division options support various LCD panel requirements and power architectures.

Bias methods: Static, 1/2, 1/3, and 1/4 bias schemes supported for varying contrast and power trade-offs.

Configurable blink, time-slice, and memory mapping options enable interactive or informative UIs.

Segment and common output can be flexibly assigned, with LCD drive settings programmable for optimal display quality with minimal energy usage.

These integrated LCD drive features eliminate the need for external LCD drivers in many designs, reducing BOM, PCB real estate, and overall energy consumption.

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Package details, hardware interfaces, and relevant applications for R5F10WMAGFB#10 RL78/L13

R5F10WMAGFB#10 is offered in an 80-pin LQFP (12x12mm, 0.5mm pitch) package, designed for straightforward integration into standard PCB manufacturing flows. The pinout supports alternate function assignment via the PIOR, allowing flexible peripheral allocation, which can enhance signal integrity and simplify routing for densely packed boards.

The device's industrial specification—operating from -40°C to +105°C—makes it suitable for demanding commercial and industrial applications such as smart meters, medical instrumentation, appliances, and handheld terminals. For cost-sensitive consumer applications, lower-temperature range variants are also available within the RL78/L13 series.

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Alternative or substitute models for R5F10WMAGFB#10 RL78/L13

When evaluating system upgrades, maintenance, or supply chain flexibility, procurement personnel and product designers may consider other RL78/L13 series variants as direct replacements or footprint/function pin-identicals. Key alternative options include:

R5F10WMCAFB, R5F10WMDAFB, R5F10WMEAFB, R5F10WMFAFB, R5F10WMGAFB, R5F10WMCGFB, R5F10WMDGFB, R5F10WMEGFB, and related models, which differ in memory size (flash/RAM), I/O count, package type, or industrial/consumer temp grade.

For different pin counts (e.g., 64-pin), see compatible RL78/L13 models such as R5F10WLAAFB, R5F10WLCAFB, etc.

When substituting, always verify the peripheral feature set, memory size, and electrical characteristics (voltage, temperature, timing) for compatibility. Renesas provides detailed RL78/L13 part selection guides; any migration between RL78/L13 models should include full system validation due to possible differences in internal memory allocation or electrical margins.

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Conclusion

: Selection considerations for R5F10WMAGFB#10 RL78/L13

The R5F10WMAGFB#10 microcontroller from Renesas RL78/L13 series delivers a balanced mix of ultra-low power operation, robust peripheral set, sophisticated LCD control, and industrial-grade reliability. Its versatility across voltage ranges, advanced power management, and seamless integration with sensors and display panels cater directly to the needs of engineers focused on next-generation battery-powered metering, medical, and portable display-based applications.

For project teams pursuing BOM and PCB cost reductions, the integrated LCD driver and flexible peripheral allocation simplify hardware design and reduce external component needs. Its compatibility with related RL78/L13 models also enables agile sourcing and future expansion. When selecting a microcontroller for energy-sensitive information display products, the R5F10WMAGFB#10 delivers both the flexibility and long-term reliability required for industrial and advanced consumer designs.