User's Manual

LTE Module
EC20 Hardware Design
EC20_Hardware_Design Confidential / Released 22 / 83
GPIO Pins
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
WAKEUP_IN
1
DI
Sleep mode control.
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
Pull-up by default.
Low level wakes up
the module. If
unused, keep it open.
W_DISABLE#
4
DI
Airplane mode
control.
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
Pull-up by default.
In low voltage level,
module can enter into
airplane mode. If
unused, keep it open.
AP_READY
2
DI
Application
processor sleep
state detection.
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
If unused, keep it
open.
RESERVED Pins
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RESERVED
3, 18, 23,
28~34,
37~40, 43,
55, 73~84,
113~140
Reserved.
Keep these pins
unconnected.
3.4. Operating Modes
The table below briefly summarizes the various operating modes referred in the following chapters.
Table 5: Overview of Operating Modes
Mode
Details
Normal
Operation
Idle
Software is active. The module has registered to the network, and the
module is ready to send and receive data.
Talk/Data
Network connection is ongoing. In this mode, the power consumption is
decided by network setting and data transfer rate.
Minimum
AT+CFUN command can set the module entering into a minimum functionality mode