The ARM Cortex-A53 is a 64-bit processor designed for mobile and embedded devices. It is part of the ARM Cortex family and is known for its energy efficiency and performance. The Cortex-A53 supports advanced features like big.LITTLE architecture, allowing it to work alongside more powerful processors to optimize power consumption. This processor is commonly used in smartphones, tablets, and other devices that require a balance between performance and battery life. With its ability to handle multiple tasks efficiently, the Cortex-A53 is suitable for running modern applications while maintaining low power usage.