HUAWEI MU509-65 HSDPA LGA Module
Hardware Guide
Description of the Application Interfaces
Issue 01 (2016-04-08)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
26
Pin
No.
Pin Name
Pad
Type
Description
Parameter
Min.
(V)
Typ.
(V)
Max.
(V)
Comments
module into sleep
or wakes up the
module from
sleep.
V
IL
–0.3
-
0.91
-
71
WAKEUP_OUT
O
Module wakes up
the host.
V
OH
2.15
-
2.6
-
V
OL
0
-
0.45
-
It is recommended to use resistance of 0
Ω in the DTE to isolate signals transmitted from above
pins in Table 3-5 .
3.4.2 POWER_ON_OFF Pin
The module can be powered on/off by the POWER_ON_OFF pin.
If the POWER_ON_OFF pin is pulled down for at least 0.5s, the module is powered
on; if the POWER_ON_OFF pin is pulled down for at least 0.5s again, the module is
powered off.
Figure 3-5
Connections of the POWER_ON_OFF pin
Power-On Time Sequence
After VBAT has been applied and is stable, the POWER_ON_OFF signal is pulled
down, and then the module will boot up. Figure 3-6 shows power on timing.
During power on timing, please make sure the VBAT is stable.
