Features
- 48MHz Arm Cortex-M4
- 256kB Flash memory and 32kB SRAM
- 8kB Data Flash to store data as in EEPROM
- Scalable from 40-pin to 100-pin packages
- Segment LCD controller
- 14-bit A/D converter
- Capacitive touch sensing unit
- USB 2.0 Full Speed
- CAN 2.0B
- SCI (UART, Simple SPI, Simple I2C)
- SPI/ I2C multimaster interface
Description
The Renesas RA4M1 group of microcontrollers (MCUs) uses the high-performance Arm® Cortex®-M4 core and offers a segment LCD controller and a capacitive touch sensing unit input for intensive HMI designs. The RA4M1 MCU is built on a highly efficient low power process and is supported by an open and flexible ecosystem concept—the Flexible Software Package (FSP), built on FreeRTOS—and is expandable to use other RTOSes and middleware. The RA4M1 is suitable for applications where a large amount of capacitive touch channels and a segment LCD controller are required.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | Arm Cortex-M4 |
| Program Memory (KB) | 256 |
| RAM (KB) | 32 |
| Carrier Type | Bulk (Tray), Full Carton (Tray), Tape & Reel |
| Supply Voltage (V) | 1.6 - 5.5 |
| I/O Ports | 28, 36, 52, 84 |
| 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) | ( 1 / 1 ) |
| USB HS (host ch/device ch) | ( 0 / 0 ) |
| USB SS (host ch/device ch) | ( 0 / 0 ) |
| SCI or UART (ch) | 4 |
| SPI (ch) | 1, 2 |
| I2C (#) | 2 |
| CAN (ch) | 1 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| SDHI (ch) | 0 |
| High Resolution Output Timer | No |
| PWM Output (pin#) | 10, 12, 16 |
| 32-Bit Timer (ch) | 2 |
| 16-Bit Timer (ch) (#) | 2, 4, 6 |
| Standby operable timer | Yes |
| Asynchronous General Purpose Timer / Interval Timer (ch) | 0, 2 |
| 16-Bit A/D Converter (ch) | 0 |
| 14-Bit A/D Converter (ch) | 11, 14, 18, 25 |
| 12-Bit A/D Converter (ch) | 0 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 0 |
| 12-Bit D/A Converter (ch) | 1 |
| 8-Bit D/A Converter (ch) | 2 |
| Capacitive Touch Sensing Unit (ch) | 10, 15, 24, 27 |
| Image Codec | No |
| Segment LCD Controller | No, Yes |
| Security & Encryption | Unique ID, TRNG, AES |
Application Block Diagrams
 | Dual-Needle Gauge Dual-needle gauge displays two real-time values for fast, intuitive analog monitoring. |
 | Smart Cradle Smart cradle with cry detection, real-time alerts, auto-swing function, and Bluetooth mobile app support. |
 | Universal USB PD Lab Power Supply & Monitor USB PD portable power supply up to 48V, ideal for engineers' mobile and fieldwork needs. |
 | IO-Link Sensors This system enables smart sensor control via IO-Link communication. |
 | Industrial CAN Sensor Network Industrial CAN network with Arm Cortex-M23 MCU offers reliable, secure communication and robust performance. |
Additional Applications
- HMI with Seg/Com LCD display
- Security (fire detection, burglar detection, panel control)
- Industry (door openers, panel control)
- HVAC (heating, air conditioning, boiler control)
- Home appliance
- General purpose
The Renesas RA Family of 32-bit MCUs is designed to help device developers create the next generation of secure IoT devices. They are low power, have a wide variety of peripherals and connectivity options, and sport the latest HMI to help end customers have an immersive experience.
