Capacitive Touch
Capacitive touch technology is widely used in traditional household appliances, smart locks for buildings, industrial panels, as well as emerging fields such as the Internet of Things, artificial intelligence, and electric vehicles. Renesas Electronics has accumulated rich experience and unique technology in capacitive touch technology, forming a diverse product lineup.
Renesas combines the ultra-low power RA0 MCU with capacitive touch technology, launching the first product in the RA0 series equipped with capacitive touch functionality, specifically developed for entry-level capacitive touch applications. This product features an Arm® Cortex®-M23 core, supporting up to 64KB of code flash memory, 16KB of SRAM, a wide operating voltage range of 1.6V to 5.5V, and a wide operating temperature range of -40°C to 125°C, with low power characteristics and optimized peripherals to reduce BOM costs and simplify the design process. The RA0A1 adopts a new generation of capacitive touch technology, offering capacitive touch functionality with up to 24 channels, featuring intelligent wake-up touch functionality, utilizing multi-electrode connection (MEC) methods, and supporting low-power standby, which can reduce current consumption by up to 90%.
Therefore, the RA0L1 series is very suitable for low-power, low-cost capacitive touch application scenarios, such as consumer electronics, small appliance system control, industrial system control, and building automation.
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Main Advantages of RA0L1
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RA Product Lineup and RA0L1 Positioning
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RA0L1 Block Diagram
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Main Features
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32 MHz Arm Cortex-M23 core
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Up to 64KB flash memory and 16KB SRAM
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1KB data flash (100,000 programming/erase (P/E) cycles)
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20-pin to 48-pin package options
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Wide operating temperature range of -40 to 125°C
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Wide voltage range of 1.6V to 5.5V
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+-1% high precision, high-speed on-chip oscillator
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Capacitive touch functionality with up to 24 channels
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Controllable current drive ports
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Main Applications
Typical Applications:
Capacitive Touch Remote Control
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RA0L1 Development Ecosystem
RA0L1 FPB Rapid Prototyping Board:
The RA0L1 rapid prototyping board is equipped with the RA0L1 MCU and is specifically designed for evaluating various applications of the RA0L1 MCU. It features a built-in SEGGER J-Link™ emulator circuit, allowing programming/debugging without additional tools. Additionally, it is equipped with Arduino Uno™ and Pmod™ interfaces, and all pins of the microcontroller can be connected through through-holes, providing high expandability. You can also develop basic capacitive touch functionality applications through two capacitive touch buttons.
For more information on using the RA0L1 FPB board, please refer to the RA0L1 FPB board webpage(You can copy the link below into your browser or scan the QR code to view).
FPB-RA0L1-RA0L1 Rapid Prototyping Board | Renesas Electronics
https://www.renesas.cn/zh/design-resources/boards-kits/fpb-ra0l1
RA0L1 Capacitive Touch Evaluation System:
The RA0L1 capacitive touch evaluation system (RSSK-RA0L1) allows for easy evaluation of the touch solutions provided by Renesas Electronics. You can start evaluating immediately using the circuit board and software included in the kit, out of the box. The RSSK-RA0L1 has a built-in SEGGER J-Link™ emulator circuit, so no additional tools are needed to write/debug programs.
For more information on the RA0L1 capacitive touch evaluation system, please refer to the webpage(You can copy the link below into your browser or scan the QR code to view).
RSSK-RA0L1-RA0L1 Capacitive Touch Evaluation System | Renesas Electronics
https://www.renesas.cn/zh/design-resources/boards-kits/rssk-ra0l1
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RA0L1 Product Package Lineup
Unlock more RA0L1 performance by visiting the following content(You can copy the link below into your browser or scan the QR code to view).
RA0L1-32MHz Arm Cortex-M23 Entry-Level Ultra-Low Power General-Purpose Microcontroller with Capacitive Touch Functionality | Renesas Electronics
https://www.renesas.cn/zh/products/ra0l1?tab=documentation&type%5B0%5D=%E8%90%A5%E9%94%80%E8%B5%84%E6%96%99
Need Technical Support?
If you have any questions while using Renesas MCU/MPU products, you can scan the QR code below or copy the URL into your browser to access theRenesas Technical Forum for answers or online technical support.
https://community-ja.renesas.com/zh/forums-groups/mcu-mpu/
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Recommended Reading
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Discussion on the Practical Applications of Low Power Features in Renesas Touch Chips
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