Quectel UC20 Hardware Design page 24

AGND
I2C Interface
Pin Name
I2C_SCL
I2C_SDA
Other Pins
Pin Name
WAKEUP_IN
W_DISABLE#
AP_READY
RESERVED Pins
Pin Name
RESERVED
UC20_Hardware_Design
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Reserved for analog
22
ground.
Pin No. I/O Description
41 OD I2C serial clock.
42 OD I2C serial data.
Pin No. I/O Description
1 DI Sleep mode control.
Airplane mode
4 DI
control.
Application
2 DI processor sleep
state detection.
Pin No. I/O Description
23,28~33
,37~40,
Reserved
43,55,73
~84
Ground.
DC Characteristics
DC Characteristics
V min = -0.3V
IL
V max = 0.6V
IL
V min = 1.2V
IH
V max = 2.0V
IH
V min = -0.3V
IL
V max = 0.6V
IL
V min = 1.2V
IH
V max = 2.0V
IH
V min = -0.3V
IL
V max = 0.6V
IL
V min = 1.2V
IH
V max = 2.0V
IH
DC Characteristics
Confidential / Released
UMTS/HSPA Module Series
UC20 Hardware Design
If unused, connect
this pin to ground.
Comment
External pull-up
resistor is required.
1.8V only. If unused,
keep it open.
External pull-up
resistor is required.
1.8V only. If unused,
keep it open.
Comment
1.8V power domain.
Pull-up by default.
Low level wakes up
the module. If
unused, keep it open.
1.8V power domain.
Pull-up by default.
In low level voltage,
module can enter into
airplane mode. If
unused, keep it open.
1.8V power domain.
If unused, keep it
open.
Comment
Keep these pins
unconnected.
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