RA2L1 MCU is a popular product in the Renesas RA family, specifically designed for ultra-low power applications. It combines the excellent power performance of a 32-bit Arm Cortex-M23 CPU core with Renesas Electronics’ low-power process technology, offering leading low-power performance in its class. It is also equipped with an enhanced capacitive touch sensing unit (CTSU2), serial communication interfaces, CAN, high-precision analog circuits, and timers. The ultra-low power consumption and innovative touch sensing interface of the RA2L1 MCU make it an ideal choice for home appliances, industrial automation, building automation, healthcare, and consumer HMI IoT applications.
Introduction to RA2L1 Product
RA2L1 Block Diagram and Key Features
● 48MHz Arm Cortex-M23 CPU core
● Wide operating voltage: 1.6V~5.5V
● Ultra-low power: provides 64μA/MHz operating current and 250nA software standby current, with a fast wake-up time of less than 5µs
● Includes flexible low-power modes such as sleep and standby, and a special power-down mode designed for battery-powered applications
● Next-generation innovative capacitive touch sensing unit, requiring no external components, reducing BOM costs
● High-precision (1.0%) internal high-speed oscillator, temperature sensor, and various power supply interface ports reduce system costs
● Package options from 48 pins to 100 pins in LQFP/QFN
● Operating temperature range: Ta=-40℃ to 105℃
Scan the QR code below or copy the link to view more about RA2L1 – 48MHz Arm Cortex-M23 ultra-low power general-purpose microcontroller:
https://www.renesas.cn/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ra2l1-48mhz-arm-cortex-m23-ultra-low-power-general-purpose-microcontroller
RA2L1 Product Applications
Introduction to RA2L1 Key Features
Flexible Low Power Modes
● Normal mode: operates at 64 μA/MHz in the most common working mode.
● Sleep mode: stops CPU operation in sleep mode, reducing the overall current consumption of the MCU by 80%.
● Software Standby mode: SW standby mode stops the on-chip functions of the microcontroller, reducing power consumption to the lowest possible level. Wake-up time is approximately 5us.
● Snooze mode: in SNOOZE mode, the CPU is in standby while enabling A/D conversion and serial communication, activating the CPU only when needed. This mode is particularly suitable for battery-powered systems as it greatly extends battery life.
Scan the QR code below or copy the link to view more about Chapter 10 of the RA2L1 User Manual:
Chapter 10 of RA2L1 User Manual
https://www.renesas.cn/en/document/mah/ra2l1-group-users-manual-hardware?r=1398061
RA2L1 Enhanced Capacitive Touch (CTSU2) Technology
● RA2L1 Enhanced Capacitive Touch IP (CTSU2) provides better operability under various conditions.
● Noise immunity meets the requirements of IEC 61000 4-3 Level 4 / 4-6 Level 3.
● Shielded electrode support and high precision temperature drift improve touch sensitivity, and its excellent dust and moisture resistance make it more durable.
● Thanks to better signal-to-noise ratio and the fast scanning of CTSU2, it achieves a proximity sensing distance of up to 30cm and 3D gesture detection with 2-finger detection, meeting hygiene or safety-related requirements.
● RA2L1 CTSU2 provides a single-chip MCU-based solution. This means designers can execute over 50 capacitive touch matrix keys and system control using one chip.
RA2L1 Development Environment
● The unified development platform of the RA series offers flexible software packages (FSP) that include industry-leading HAL drivers and easy-to-use APIs for accessing RA2L1 peripherals.
● Various on-chip debuggers: Renesas E2/E2 Lite debuggers and Segger J-Link series.
● Three different integrated development environments: Renesas e2studio, Keil MDK, and IAR Embedded Workbench.
● Provides application guidelines and self-test libraries to help comply with safety standards IEC60730 Class B.
● EK-RA2L1 Development Board Kit: Recommended EK-RA2L1 for RA2L1 functionality evaluation and development. It features a serial connection onboard debugging interface and provides unobstructed access to all MCU IO pins.
Scan the QR code below or copy the link to view more about RTK0EG0022S01001BJ – RA2L1 Capacitive Touch Evaluation System:
https://www.renesas.cn/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/rtk0eg0022s01001bj-capacitive-touch-evaluation-system-ra2l1
● RA2L1 Touch RSSK Kit: The RA2L1 capacitive touch evaluation system allows users to easily evaluate the touch solutions provided by Renesas Electronics. Customers can evaluate button, slider, and wheel functions through this touch evaluation board.
Using QE for Capacitive Touch to easily adjust sensitivity
● User-friendly interface, easy to operate
● Touch interface is easy to develop, even for GUI beginners
● Automatically outputs adjusted source code
Scan the QR code below or copy the link to view more about RTK0EG0022S01001BJ – RA2L1 Capacitive Touch Evaluation System:
https://www.renesas.cn/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/rtk0eg0022s01001bj-capacitive-touch-evaluation-system-ra2l1#overview
RA2L1 Typical Applications
Robust and Durable CAN FD Operating Touchscreen
System Advantages:
● Reliable communication between the control panel and system controller via CAN interface enables fast system response and real-time control, enhancing overall safety.
● The touch panel and haptic feedback operate reliably in humid environments, providing enhanced user feedback under all operating conditions, improving durability and usability.
Scan the QR code below or copy the link to view more about the RA family and RA2L1 series products:
RA Family
https://www.renesas.cn/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus
Need Technical Support?
If you have any questions regarding the use of Renesas MCU/MPU products, you can scan the QR code below or copy the URL into your browser to access the Renesas Technical Forum for answers or to obtain online technical support.
https://community-ja.renesas.com/en/forums-groups/mcu-mpu/
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