High Geared RISC-V ESP32-P4 SoC Loaded with GPIOs by Espressif

High Geared RISC-V ESP32-P4 SoC Loaded with GPIOs by Espressif


The ESP32 family of system-on-chips (SoCs) from Espressif now includes a new member. The RISC V-based ESP32-P4 has three processing cores, fifty general-purpose input/output (GPIO) pins, and a full complement of security options. Interestingly, though, the chip lacks the RF radio.

Despite having three CPU cores, Espressif set them up as a “big-little” architecture with a high-performance (dual-core) and low-power (single-core) setup, respectively. When they aren’t needed, high-performance cores should be turned off.

The ESP32-P4‘s high-performance central processing unit (CPU) is a 400 MHz dual-core RISC-V CPU. The SRAM on the chip is 768 kilobytes in size. When paired with an external PSRAM, however, the on-chip RAM acts as a cache for the immediate area. For low latency buffer access, there are also eight kilobytes of zero-wait tightly linked memory (TCM).

One RISC-V core with up to 40 MHz of clock speed plus specialized SRAM, ROM, and peripherals make up the low-power system. It’s also where the system-on-power chip’s management circuitry is located (PMU). It has a touch interface, a temperature sensor, and low-speed serial interfaces as its peripherals.

The ESP32-P4’s superior security is one of Espressif’s main selling points. Secure boot, flash encryption, a genuinely random number generator, digital signature management, access rights, and privileged isolation are all part of the package.

The 50 general-purpose I/O pins are the most ever included in an Espressif system-on-chip. MIPI (Camera and Display) ports, hardware accelerators for h264 and JPEG, USB, Ethernet, and many more are among the various peripherals available for high-performance CPUs. User interface options on the ESP32-P4 include capacitive touch, speech recognition, and CSI and DSI interfaces. One can use a Pixel Processing Accelerator, which is a piece of hardware, to speed up the processing of graphical displays.

The ESP32-P4 is the first member of the ESP32 series without a radio frequency (RF) transceiver of any type. Wi-Fi, Bluetooth, and other 2.4 GHz wireless technologies are not included. Instead, the ESP32-P4 can communicate with other devices in the ESP32 family using ESP-Hosted, ESP-AT, or a third-party solution, as claimed by Espressif. Wire-based Ethernet is also an option. Overall, the ESP32-P4 is made for edge computing applications that require powerful processing, a sophisticated human-machine interface, and robust security.

The Espressif-IDF will, of course, support the brand-new ESP32-P4 SoC. They promised additional ESP32-P4 details during the next three weeks, and they delivered. Please see the Espressif statement for further information.

About Rakesh Kumar, Ph.D.

Rakesh holds a Ph.D. in Electrical Engineering with a specialization in power electronics. He is an avid enthusiast of electronics, especially embedded technologies, including Arduino and ESP32. He likes to write articles and tutorials in the field of electronics. He is also a teacher and researcher by profession.

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