UMTS/HSPA+ Module Series
UG89 Hardware Design
UG89_Hardware_Design 16 / 73
3.3. Pin Description
The following tables show the pin definition of UG89 module.
Table 4: I/O Parameters Definition
Table 5: Pin Description
Type
Description
AI
Analog Input
AO
Analog Output
DI
Digital Input
DO
Digital Output
IO
Bidirectional
OD
Open Drain
PI
Power Input
PO
Power Output
Power Supply
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
VBAT
4, 57
PI
Power supply for
module
Vmax=4.5V
Vmin=3.3V
Vnorm=3.8V
It must be able to
provide sufficient
current in a
transmitting burst
which typically rises to
2.0A.
VDD_EXT
9
PO
Provide 1.8V for
external circuit
Vnorm=1.8V
I
O
max=50mA
Power supply for
external GPIO’s pull up
circuits.
If unused, keep it
open.
VCORE
23
PO
Provide 1.2V for
external circuit
Vnorm=1.2V
Iomax=10mA
VCORE can be used
for the power indication
circuit.