Power-on operation routine for W55RP20

Project description

I want to learn about the power-on sequence of the W55RP20. I want to learn about the power-on sequence of the W55RP20. First, it is essential to understand the block diagram above. The most critical point here is the rst_n_psm in the upper right corner. PSM stands for Power-on State Machine, which, as will be explained later, is the process where all critical components such as the clock, ROM, SRAM, and buses required for the chip's operation are initialized. When power is first supplied to the chip, and the internal regulator supplies the core voltage, all basic settings of the chip are…