HUAWEI MU736 HSPA+ M.2 Module
Hardware Guide
Description of the Application Interfaces
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Figure 3-10 Recommended power off timing (connect to battery)
If there is limitation on the controlling GPIO to be programmable 500 ms, the hardware
solution can be used, as shown in Figure 3-11 .
Figure 3-11 Power on off circuit (hardware solution)
VCCGPIO2 is the power domain of the GPIO2.
When VCCGPIO2 is ON, Q2 is on and Q1 is off. So the Pin6 is controlled by
GPIO2 of host.
When VCCGPIO2 is Off, Q2 is off and Q1 is on. So the Pin6 is pulled low,
then the module is powered off.
Logic low or high-impedance (preferred)
Logic low or high-impedance (preferred)
To Next Page