Features
- 48MHz Arm Cortex-M23
- 128kB/256kB Flash Memory and 32kB SRAM with ECC
- 8kB Data Flash to store data as in EEPROM
- Scalable from 48-pin to 100-pin packages
- Internal voltage regulators
- Enhanced Capacitive Touch Sensing Unit (CTSU2)
- 12-bit ADC, 12-bit DAC, LPACMP
- 32-bit general PWM timer, 16-bit general PWM timer, low power asynchronous general-purpose timer
- RTC
- SCI (UART, Simple SPI, Simple I2C)
- SPI/I2C multi-master interface
- CAN
- Safety
- Security and encryption
Description
The RA2L1 group is based on the Arm® Cortex®-M23 core, the most energy-efficient CPU among Arm Cortex-M today. The optimized processing and Renesas’ low power process technology makes it the industry's most energy-efficient ultra-low power microcontroller. The RA2L1 group supports a wide operating voltage range of 1.6V to 5.5V, and a maximum CPU clock frequency of 48MHz, lower active mode current, and standby mode current. The RA2L1 group also features an enhanced Capacitive Touch Sensing Unit (CTSU2), a set of serial communication interfaces, highly accurate converters, and timers. The products are available with pin counts ranging from 48-pin to 100-pin.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | Arm Cortex-M23 |
| Program Memory (KB) | 128, 256 |
| RAM (KB) | 32 |
| Carrier Type | Bulk (Tray), Full Carton (Tray), Full Tray (Tray), Tape & Reel |
| Supply Voltage (V) | - |
| I/O Ports | 37, 53, 69, 85 |
| DRAM I/F | No |
| Temp. Range (°C) | Ta = -40 to +85, Ta = -40 to +105 |
| Operating Freq (Max) (MHz) | 48 |
| Ethernet speed | No |
| EtherCat (ch) (#) | 0 |
| USB FS (host ch/device ch) | ( 0 / 0 ) |
| USB HS (host ch/device ch) | ( 0 / 0 ) |
| USB SS (host ch/device ch) | ( 0 / 0 ) |
| SCI or UART (ch) | 5 |
| SPI (ch) | 2 |
| I2C (#) | 2 |
| CAN (ch) | 1 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| SDHI (ch) | 0 |
| High Resolution Output Timer | No |
| PWM Output (pin#) | 13, 20 |
| 32-Bit Timer (ch) | 4 |
| 16-Bit Timer (ch) (#) | 3, 6 |
| Standby operable timer | Yes |
| Asynchronous General Purpose Timer / Interval Timer (ch) | 2 |
| 16-Bit A/D Converter (ch) | 0 |
| 14-Bit A/D Converter (ch) | 0 |
| 12-Bit A/D Converter (ch) | 9, 13, 17, 19 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 0 |
| 12-Bit D/A Converter (ch) | 1 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 20, 30, 32 |
| Image Codec | No |
| Segment LCD Controller | No |
| Security & Encryption | Unique ID, TRNG, AES |
Application Block Diagrams
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Dual-Needle Gauge
Dual-needle gauge displays two real-time values for fast, intuitive analog monitoring.
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Current Loop Communication with AnalogPAK
AnalogPAK™ enables a 4-20mA current loop with HART modem and FSK modulation support.
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Robust Operational Touch Panel with CAN FD
Reliable HMI touch panel with CAN FD, haptics, and NFC for e-bikes, elevators, and industry.
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Bidirectional 3000W UPS Power
Bidirectional 3kW telecom UPS system design with buck‑boost controllers, MCU, and power devices.
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Vehicle Telematics Box with 4G & GPS
Vehicle telematics box enables 4G communication, GPS, remote management, data acquisition, and fault monitoring.
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OCPP Interface Card (OIC) for Smart EV Chargers
OCPP enables EV chargers to connect with servers for remote control, real-time alerts, and flexibility.
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Solar-Powered Location Tracker
The solar-powered location tracker offers modular design, versatile connectivity, and PV energy harvesting.
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Instrument Panel for Light Electric Vehicles
Compact instrumental panel system with sensor support, Bluetooth LE, GPU, and voice control.
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Swappable Battery Charging Kiosk
Swappable battery charging kiosk for LEVs offers reduced wait times, easy operation, and versatile functionality.
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Edge Voice User Interface (VUI)
Voice control with RA MCUs offers efficient, network-free voice recognition for smart devices.
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Industrial CAN Sensor Network
Industrial CAN network with Arm Cortex-M23 MCU offers reliable, secure communication and robust performance.
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Wi-Fi-Connected Furnace Controller
Wi-Fi-connected furnace controller with precise sensing, safety compliance, and remote monitoring for modern HVAC systems.
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Additional Applications
- Consumer applications
- Home appliances
- Industrial automation
- Building automation
- Medical and healthcare
- General purpose
Introducing the RA2L1 Group of 48MHz ArmⓇ CortexⓇ-M23 ultra-low power general-purpose microcontrollers (MCUs). These MCUs deliver industry-leading power efficiency with enhanced peripherals for IoT applications.
