Overview
Description
The Renesas RA4C1 32-bit MCU group features the low-power, Arm® Cortex®-M33 (CM33) core with TrustZone® to deliver an ideal balance of low voltage operation, low power consumption, and high performance. The RA4C1 offers operation down to 1.6V, combined with a low-power standby current of as little as 1.73µA and a multitude of low-power features enabling the user to dynamically optimize power/performance to their application requirements.
The RA4C1 integrates an advanced security engine offering isolation from improper access from the CPU or a debugger, and offers a 128-bit unique ID, secure key management, and acceleration for AES, ECC, and SHA algorithms. This security feature secures data from cyberattacks and complies with the latest legislation.
Many low-power features are included in the RA4C1 MCUs, such as segment LCD display drive, RTC with a high-precision mode, ADC, and timers, as well as integrated communications interfaces such as CAN FD, I2C, SPI, and low-power UARTs. All these built-in features make the RA4C1 MCUs ideal for metering applications such as power, gas, and water meters, as well as many industrial automation, home appliances, smart home, consumer, and building/home automation applications.
The RA4C1 comes in a range of 64-pin or 100-pin LQFP packages and offers support for operating temperatures of -40°C to 105°C. The RA4C1 MCUs are fully supported by the Renesas Flexible Software Package and a comprehensive set of hardware and software development tools.
Features
- 80MHz Arm Cortex-M33 with TrustZone
- 512KB dual bank flash supporting BGO
- 96KB SRAM with 64KB parity and 32KB ECC
- 8KB data flash
- 168µA/MHz active current, 1.73µA standby current
- Fast wake-up <3.5µS (from MOCO)
- 6 SCI (UART, Simple SPI, Simple I2C), SSI
- 2 x low-power UARTs with 32kHz support
- 2 x I2C multi-master interface
- 3 x SPI interfaces
- CAN FD
- Quad SPI with XIP
- 32-bit and 16-bit timers, 32-bit ultra-low power timers
- 2 x watchdog timer
- High-precision Real-Time Clock (RTC)
- 12-bit ADC
- Temperature sensor with 1% accuracy
- 8 x 44 segment LCD drive
- Advanced security engine with support for: TRNG, Unique ID, AES, ECC, SHA
Comparison
Applications
Design & Development
Software & Tools
Sample Code
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Renesas Academy
FAQs
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TrustZone on RA4C1 group MCUs
The Cortex-M33 core on the RA4C1 offers TrustZone, a hardware enforced separation of MCU resources, that enables isolation and Secure/Non-Secure partitioning of memory and peripherals. Code executing in the Secure world can act on code/data/peripherals that are located in the Non-secure ...
Aug 21, 2025 -
Using external memory with RA4C1 MCUs
RA4C1 MCUs support Quad SPI interface with support for Execute-In-Place (XIP). Should the code size exceed the size of on-chip memory, users have the option of using external flash connected to the Quad SPI interafce, and executing the code directly from external flash. They also have the ...
Aug 21, 2025 -
RA4C1 Part numbering
The RA4C1 Partnumbering system allows us to indicate the operating temperate, package type and memory size of a specific device. Each P/N begins R7FA4C1B. The B represents that this device contains CAN FD. The next digit prepresents the memory size and can be B for 256k flash and ...
Aug 21, 2025
Videos & Training
Experience the optimized performance and low power consumption that RA4C1 MCU delivers to extend your battery lifespan. Explore the integrated advanced security engine that protects your data transfer and read.
Related Resources
Additional Videos
Events & Webinars
News & Blog Posts
News
Aug 21, 2025
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Blog Post
Aug 21, 2025
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Blog Post
Aug 21, 2025
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Blog Post
Oct 13, 2022
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Blog Post
Jan 28, 2022
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