Quectel UC20 Manual page 21

VDD_EXT 7
VDD_2V85 34
8,9,19,36,
46,48,50~
GND
54,56,72,
85~112
Turn On/Off
Pin Name Pin No.
PWRKEY 21
RESET_N 20
Status Indication
Pin Name Pin No.
STATUS 61
NET_MODE 5
NET_
6
STATUS
SLEEP_IND 3
USB Interface
Pin Name Pin No.
UC20_Hardware_Design
Provide 1.8V for
PO
external circuit.
Provide 2.85V for
PO
external circuit.
Ground.
I/O Description
Turn on/off the
DI
module.
DI Reset the module.
I/O Description
Indicate the module
OD
operating status.
Indicate the module
DO network registration
mode.
Indicate the module
DO network activity
status.
Indicate the sleep
DO
status.
I/O Description
Confidential / Released
UMTS/HSPA Module Series
UC20 Hardware Design
Vnorm = 1.8V
I max = 20mA
O
Vnorm = 2.85V
I max = 100mA
O
DC Characteristics
R ≈ 200kΩ
PU
V max = 2.1V
IH
V min = 1.3V
IH
V max = 500mV
IL
R ≈ 200kΩ
PU
V max = 2.1V
IH
V min = 1.3V
IH
V max = 500mV
IL
DC Characteristics
V min = 1.35V
OH
V max = 0.45V
OL
V min = 1.35V
OH
V max = 0.45V
OL
V min = 1.35V
OH
V max = 0.45V
OL
DC Characteristics
Power supply for
external GPIO's pull up
circuits.
Power supply for
external GNSS LNA,
active antenna and
other circuits.
Comment
Pull-up to 1.8V
internally.
Pull-up to 1.8V
internally.
Active low.
Comment
Require external
pull-up.
1.8V power domain.
1.8V power domain.
1.8V power domain.
Comment
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