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Who can talk about the circuit flow of mobile phone standby and startup?
Take the IPHONE as an example. When in standby, the power chip obtains the battery power and the clock outputs the standby voltage. After pressing the on key, the power chip sends a power-on signal to the power chip. After receiving this trigger signal, the power chip directly outputs all the power supplies needed for the motherboard to start: CPU, temporary storage and hard disk power supply. After the CPU is powered on, the CPU crystal vibrates to output a CPU clock of 24M, and the power chip outputs a CPU reset after a delay. The CPU reads the boot data of the hard disk, and the CPU sends out a continuous power supply signal.
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