Quectel UC20

UMTS/HSPA Module Series
UC20 Hardware Design
UC20_Hardware_Design Confidential / Released 24 / 84
AGND
22
Reserved for analog
ground.
Ground.
If unused, connect
this pin to ground.
I2C Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
I2C_SCL
41
OD
I2C serial clock.
External pull-up
resistor is required.
1.8V only.
I2C_SDA
42
OD
I2C serial data.
External pull-up
resistor is required.
1.8V only.
Other 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.
W_DISABL
E#
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 level voltage,
module can enter into
airplane mode.
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.
RESERVED Pins
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RESERV
ED
23,28~33,3
7~40,43,55
,73~84
Reserved
Keep these pins
unconnected.