Features
- 32MHz Arm Cortex-M23 core
- Up to 64KB Flash and 16KB SRAM
- 1KB data flash memory (100,000 program / erase (P/E) cycles)
- 20-pin to 48-pin package options
- Wide operation temperature range from -40°C to 125°C
- Wide voltage range of 1.6V to 5.5V
- ±1% high-accuracy high-speed on-chip oscillator
- Up to 24-channel capacitive touch
- Controlled current drive port
- TAU (16-bit general PWM timer)
- TML32 (32-bit interval timers)
- RTC
- 12-bit A/D converter
- Temperature sensor
- SAU (UART, Simplified SPI, Simplified I2C)
- UART
- I2C bus
- Random number generator
- Safety functions
- Flexible power architecture with fast wake-up
- Best-in-class HAL driver code
- Supports the Arm ecosystem and Renesas original development tools
Description
The RA0L1 group is the first product with capacitive touch functionality in the RA0 MCU series. This product implements an Arm® Cortex®-M23 core with low power and peripherals that are optimized for BOM cost reduction and simple design for the low-end MCU market. The RA0L1 group supports up to 64KB code flash, 16KB SRAM memory, a wide operating voltage range of 1.6V to 5.5V, and a wide operating temperature range of -40°C to 125°C. The RA0 series is ideal for cost-sensitive applications such as low power and lower cost for consumer electronics, system control for small appliances, industrial system control, and building automation.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | Arm Cortex-M23 |
| Program Memory (KB) | 32, 64 |
| RAM (KB) | 16 |
| Carrier Type | Full Carton (Tray), Full Tray (Tray), Magazine, Tape & Reel |
| Supply Voltage (V) | - |
| I/O Ports | 17, 21, 29, 44 |
| DRAM I/F | No |
| Temp. Range (°C) | Ta = -40 to +105, Ta = -40 to +125 |
| Operating Freq (Max) (MHz) | 32 |
| 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) | 3, 4, 6 |
| SPI (ch) | 0 |
| I2C (#) | 0 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| SDHI (ch) | 0 |
| High Resolution Output Timer | No |
| PWM Output (pin#) | 7 |
| 32-Bit Timer (ch) | 0 |
| 16-Bit Timer (ch) (#) | 8 |
| Standby operable timer | Yes |
| Asynchronous General Purpose Timer / Interval Timer (ch) | 1 |
| 16-Bit A/D Converter (ch) | 0 |
| 14-Bit A/D Converter (ch) | 0 |
| 12-Bit A/D Converter (ch) | 6, 8, 10, 13 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 0 |
| 12-Bit D/A Converter (ch) | 0 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 9, 11, 14, 24 |
| Image Codec | No |
| Segment LCD Controller | No |
| Security & Encryption | 128-bit Unique ID; TRNG |
Application Block Diagrams
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Capacitive Touch Remote Controller
Sleek, buttonless remote controller with touch gestures and Bluetooth for smart home control.
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Additional Applications
- Small appliance: kettle, oven, electric toothbrush, shaver, hair dryer
- Industrial system: control panel, capacitive sensor
- Consumer electronics: remote controller
- Building automation: smart lock
This video provides an overview of the RA0L1 Arm® Cortex®-M23 core MCU, which features capacitive touch functionality, low power operation, and peripherals optimized for BOM cost reduction and simplified design in the low-end MCU market.
Related Resources
Additional Videos
Events & Webinars
News & Blog Posts
News
Sep 17, 2025
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Blog Post
Sep 17, 2025
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Blog Post
Oct 13, 2022
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Blog Post
Jan 28, 2022
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