ZTE Corporation ZM8300G Manual Do Utilizador
ZTE ZM8300G Module Hardware User Manual
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is drived low which stay at least 1200ms. The power off sequence is acomplished.note that
if the user want the module to power off after power supply is off,the POWN_ON should
be drived low for 1200ms and idle state should be at least 200ms. Power on/off sequence
timing diagram showed as FIG.3-3
Figure 3-3 Sequence timing of power on/off
For the design of the POWN_ON pin, the following schemes are available:
Scheme 1: If a customer wants to control the startup/shutdown of the module, connect the
POWN_ON signal pin to an AP and enable the AP to control the POWN_ON signal pin.
Scheme 2: If a customer wants to control the startup/shutdown of the module using a
button, design a button circuit on the system board. When using this scheme, pay attention
to ESD protection.
Scheme 3: If a customer requires that the module starts up immediately after being
powered on, ground the POWN_ON pin.
Figure 3-4 illustrates the three schemes.