Renesas Introduces Ultra-Low-Power <span style='color:red'>RL78</span>/L23 MCUs for Next-Generation Smart Home Appliances
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Renesas Introduces Ultra-Low-Power RL78/L23 MCUs for Next-Generation Smart Home Appliances

　　Renesas Electronics Corporation (TSE:6723), a premier supplier of advanced semiconductor solutions, today introduced the new 16-bit RL78/L23 microcontroller (MCU) group, expanding its low-power RL78 family. Running at 32MHz, the RL78/L23 MCUs combine industry-leading low-power performance with essential features such as dual-bank flash memory, segment LCD control, and capacitive touch functionality to support smart home appliances, consumer electronics, IoT and metering systems. These compact, cost-effective devices address the performance and power requirements of modern display-based human-machine interface (HMI) applications.　　Ultra-Low Power Operation with Optimized LCD Performance　　The RL78/L23 is optimized for ultra-low power consumption and ideal for battery-powered applications that spend the majority of time in standby. They offer an active current of just 109μA/MHz and a standby current as low as 0.365μA, along with a fast 1μs wake-up time to help minimize CPU activity. The LCD controller’s new reference mode, VL4, reduces LCD operating current by approximately 30 percent when compared to the existing RL78/L1X group. The MCUs come with SMS (SNOOZE Mode Sequencer), which enables dynamic LCD segment display without CPU intervention. By offloading tasks to the SMS, the devices minimize CPU wake-ups and contribute to system-level power savings. These innovations significantly extend battery life, simplify design and reduce replacement costs, while minimizing environmental impact.　　The RL78/L23 offers a wide operating voltage range of 1.6V to 5.5V, which supports direct operation from 5V power supplies commonly used in home appliances and industrial systems. This capability reduces the need for external voltage regulators. The MCUs also integrate key components such as capacitive touch sensing, a temperature sensor, and internal oscillator, reducing BOM cost and PCB size.　　Feature-Rich Peripherals for HMI Systems　　Designed to meet the dynamic requirements of the HMI market, RL78/L23 integrates a suite of advanced features in a compact, cost-effective package. Its built-in segment LCD controller and capacitive touch realize sleek, responsive user interfaces for products such as induction cooktops and HVAC systems. The IH timer (Timer KB40) enables precise multi-channel heat control, which is essential in smart kitchen appliances such as rice cookers and IH cooktops. The devices include dual-bank flash memory for seamless firmware updates via FOTA (Firmware Over-the-Air), allowing continuous system operation in applications like metering, where downtime must be minimized. The dual-bank architecture allows one memory bank to run the user program, while the other receives updates. This approach keeps the system functional throughout the process for improved reliability.　　“The Renesas RL78 Family of 16-bit microcontrollers has been one of the most successful products since its launch more than 10 years ago, particularly in home appliances,” said Daryl Khoo, Vice President of Embedded Processing at Renesas. “I’m pleased to announce the RL78/L23, a new generation of RL78 microcontrollers with rich features, ideally suited for smart home appliances and cost-sensitive IoT solutions. With these devices, we aim to provide a better user experience with our intuitive development environment so that customers can get to production faster with confidence, based on market-proven Renesas technologies.”　　Key Features of the RL78/L23　　16-bit RL78 microcontroller running at 32MHz　　Built-in segment LCD controller and capacitive touch　　Up to 512KB of dual-bank flash memory for seamless FOTA　　Up to 32KB of SRAM and 8KB of data flash　　SMS for ultra-low power operation　　IH Timer (KB40) supporting up to 3-channel induction heating control　　Wide operating voltage range from 1.6V to 5.5V　　Operating temperature range of -40°C to +105°C　　Multiple serial interfaces including UART, I2C, CSI　　IEC60730-compliant self-test library　　44-100-pin LFQFP, LQFP and HWQFN packages　　Intuitive Development Environment for Faster Time-to-Market　　The RL78/L23 comes with an easy-to-use development environment. Developers can leverage robust support tools such as Smart Configurator and QE for Capacitive Touch to streamline system design. Renesas offers the RL78/L23 Fast Prototyping Board which is compatible with Arduino IDE, and a capacitive touch evaluation system for in-depth testing and validation.　　Winning Combinations　　Renesas offers Induction Heating Rice Cooker Solution which combines the new RL78/L23 devices with numerous compatible devices from its portfolio to offer a wide array of Winning Combinations. Winning Combinations are technically vetted system architectures from mutually compatible devices that work together seamlessly to bring an optimized, low-risk design for faster time to market. Renesas offers more than 400 Winning Combinations with a wide range of products from the Renesas portfolio to enable customers to speed up the design process and bring their products to market more quickly. They can be found at renesas.com/win.　　Availability　　The RL78/L23 MCUs are available today, along with the Fast Prototyping Board (FPB-RL78L23) and the capacitive touch evaluation system (RSSK-RL78L23). 
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Release time：2025-08-27 15:18 reading：225 Continue reading>>
Renesas Electronics <span style='color:red'>RL78</span>/G24 Fast Prototyping Board
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Renesas Electronics RL78/G24 Fast Prototyping Board

　　Renesas Electronics RL78/G24 Fast Prototyping Board implements the RL78/G24 microcontroller and is designed explicitly for prototyping various applications. The board allows users to plug in a USB cable to write/debug a program and start an evaluation without additional tools.The Renesas RL78/G24 Fast Prototyping Board performs advanced debugging employing the E2 emulator Lite or the traditional E2 emulator. The board arrives standard with Arduino Uno and Pmod™ interfaces and has high scalability with access to all pins on the microcontroller.FEATURES　　Equipped with an RL78/G24 16-bit microcontroller (64-pin, 128KB ROM, 12KB RAM)　　Programs can be written and debugged via the COM Port communication by connecting it to a PC with a USB cable　　Access to all the microcontroller pins　　Comes standard with Arduino Uno, Pmod™, and Grove interfaces　　Support for various RL78 software and tools　　PCB LAYOUT
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Release time：2023-10-13 11:33 reading：2398 Continue reading>>
Ameya360:New-Generation <span style='color:red'>RL78</span>/G22 MCU Delivers Inexpensive and Highly Functional Sensor Solutions
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Ameya360:New-Generation RL78/G22 MCU Delivers Inexpensive and Highly Functional Sensor Solutions

　　Due to the diversity of lifestyles, current products are expected to have high accessibility and advanced system control for various users and environments. This results in the need for a high-performance CPU and a sensor system capable of detecting various materials.　　There are many applications that use inexpensive sensors (photosensors), as well as expensive sensors (piezoelectric sensors and ultrasonic sensors) to detect material. Photosensors are easy to use and can be installed in various places in the equipment. However, accumulation and adhesion of dust can cause erroneous detection and deterioration. In addition, it can complicate the assembly due to the routing of data lines and power lines.　　The capacitive sensor embedded in the RL78/G22 can perform detection without direct contact, making it possible to create a system that is less susceptible to dust, etc., and solve problems with sensors depending on the usage environment. Furthermore, with the sensor built into the MCU, a system can be constructed using only electrodes.　　A capacitive sensor measures the amount of charge generated between an electrode and material. Since the amount of electric charge changes in ratio to the dielectric constant of material, it is generally affected by material with a higher dielectric constant than the dielectric constant of air. Therefore, it can detect various objects such as human body, water, oil, glass, plastic, paper, and metal.　　The RL78/G22 Fast Prototyping Board (FPB) makes evaluating microcontrollers and has touch button/touch slider electrodes that can be used to easily evaluate capacitive sensors too.　　The following demonstration shows how to use the touch button electrode in the FPB to detect material (water, powder – chalk).　　RL78/G22 Fast Prototyping Board Capacitive Touch Material Detection Demo Overview　　The state change inside the container is measured with a capacitive sensor (mutual capacitance method).　　RL78/G22 Fast Prototyping Board (FPB) Material Detection Demo - Mutual Capacitance　　Demo procedure　　1.Connect PC and FPB　　2.Electrode settings with e? studio and QE for capacitive touch　　3.Bring the FPB electrode into contact with the container, and pour water or chalk into the container.　　4.Monitor with QE for capacitive touch
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Release time：2023-02-20 15:40 reading：1927 Continue reading>>
Renesas Electronics <span style='color:red'>RL78</span>/G15 Low Power Microcontrollers
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Renesas Electronics RL78/G15 Low Power Microcontrollers

　　Renesas Electronics RL78/G15 Low Power Microcontrollers (MCUs) offer low pin counts (8-pin to 20-pin packages) with rich serial interfaces for cost-effective portable applications. RL78/G15 MCUs offer a true low-power platform with a 54μA/MHz operating current, 4KB or 8KB flash memory, 1KB SRAM, 1KB data flash, and a 2.4V to 5.5V range with operating temperatures up to +125°C.　　FEATURES：　　Low power consumption technology　　RL78-S2 CPU core up to 16MHz　　4KB/8KB Flash Memory and 1KB SRAM　　1KB Data Flash　　Operating temperature range up to +125°C　　General PWM timer　　10-bit A/D converter and comparator　　SCI (CSI, UART, Simple I2C) and I2C interfaces　　On-chip debug 2.4V to 5.5V (single-wire, double-wire)　　All ports can use as I/O except VDD and VSS　　Package options　　8-pin plastic WDFN, 3mm2 with a 0.65mm pitch　　10-pin plastic LSSOP, 4.4mm x 3.6mm with a 0.65mm pitch　　16-pin plastic SSOP, 4.4mm x 5.0mm with a 0.65mm pitch　　16-pin plastic HWQFN, 3mm2 with a 0.5mm pitch　　20-pin plastic LSSOP, 4.4mm x 6.5mm with a 0.65mm pitch　　APPLICATIONS：　　General Purpose for 8-bit/16-bit　　Industrial　　Consumer　　Home appliances　　Fans　　Sensor control　　Lighting　　Inverters
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Release time：2023-01-09 11:23 reading：2304 Continue reading>>

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