LTE Standard Module Series
EC25 Hardware Design
EC25_Hardware_Design 35 / 130
Other Interface 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.
Cannot be pulled up
before startup.
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.
At low voltage level,
module can enter
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.
USB_BOOT Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
USB_BOOT 115
DI
Force the module to
enter emergency
download mode
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
Cannot be pulled up
before startup.
It is recommended to
reserve test point.
RESERVED Pins
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RESERVED
3, 18, 43,
55, 73~84,
113, 114,
116, 117,
140-144.
Reserved
Keep these pins
unconnected.
