They use Arm Cortex-M33 core
Renesas Electronics this week expanded the RA4 series of microcontrollers with a new group of 32-bit microcontrollers called RA4M3. These microcontrollers use the Arm Cortex-M33 core, clocked at up to 100 MHz. By offering industry-leading performance, Arm TrustZone and Renesas Secure Crypto Engine technologies, and advanced memory subsystems, the RA4M3 microcontrollers simplify the development of secure and secure industrial electronics and low-power IoT peripherals.
Renesas RA4M3 microcontrollers are designed for industrial electronics and IoT devices
Inactive mode, the power consumption is 119 μA / MHz. In standby mode, the current consumption does not exceed 1.6 mA, and the microcontroller needs 30 μs to wake up from standby mode. The microcontrollers are configured with 1 MB of flash, 128 KB of RAM, 8 KB of data flash, and 1 KB of SRAM in standby mode. For memory-intensive applications, developers can combine the built-in memory of the microcontroller with external memory connected to the Quad-SPI interface and with an SD card to increase the size. The ability to switch banks of flash memory and work with it in the background allows you to perform firmware updates in the background. Built-in interface blocks including Quad SPI, SDHI, SSI, USB2.0, SCI, SPI / I2C, and touch input block reduce the number of additional components
Microcontrollers are manufactured using a 40nm process technology. Depending on the model, LQFP packages with 64 to 144 pins are used.
