ZTE Corporation ZM8300G Manual Do Utilizador
ZTE ZM8300G Module Hardware User Manual
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22
AP
ZM8300
b
c
e
POWN_ON
Ⅰ
Ⅲ
Ⅱ
S1
S2
0 Ω
2.2KΩ
1KΩ
Figure 3-4 Schemes for Controlling the Startup/Shutdown of the ZM8300G Module
Note that if scheme 3 is used, the module cannot enter the PSM sleep state. If a customer's
products prefer low power consumption, scheme 1 is recommended.
PIN 35 of the ZM8300G module can also provide the startup function. Specifically, after an
external logic high level is connected to the ZM8300G module, pull up PIN 35 to the
high-level state for 16 ms or more (1.25 V to 2.10 V, with the typical value being 1.5 V).
Then, the module starts up. Note that PIN 35 cannot provide the module shutdown function.
PIN 35 is a multiplexing pin. Therefore, to use PIN 35, communicate with ZTE FAE team in
advance.
3.4.3
RESET_N Signal
RESET_N is used for module hard reset function,low level trigger,1.8V pull-up internal for
module.after the module power on, RESET_N is drived low which must stay at least
500ms,note that the peroid for low level is no more than 8s or the module will power
off.Hard reset sequence timing diagram showed as FIG.3-5