Gpios - Quectel EG12 Series Hardware Design

Table 29: Pin Definition of USB_BOOT Interface
Pin Name Pin No.
USB_BOOT 140
The following figure shows a reference circuit of USB_BOOT.

3.22. GPIOs

In addition to the three GPIOs dedicated for external tuner control, the module provides two
general-purpose input/output interfaces for customers' design.
Table 30: Pin Definition of GPIOs
Pin Name Pin No.
GPIO_1 138
GPIO_2 139
EG12_Hardware_Design
I/O Description
Force the module into emergency
DI
download mode
Module
Test points
USB_BOOT
TVS
Figure 32: Reference Circuit of USB_BOOT
I/O Description
IO
General purpose input/output ports
IO
VDD_EXT
10K
Close to module
LTE-A Module Series
EG12 Hardware Design
Comment
1.8V power domain.
Active high.
If unused, keep it open.
Comment
If unused, keep it open.
If unused, keep it open.
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