UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 17 / 72
3.3. Pin Description
The following tables show the UG95
’s pin definition.
Table 3: IO Parameters Definition
Type
Description
IO
Bidirectional input/output
DI
Digital input
DO
Digital output
PI
Power input
PO
Power output
AI
Analog input
AO
Analog output
OD
Open drain
Table 4: Pin Description
Power Supply
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
VBAT_BB
32, 33
PI
Power supply for
module baseband
part.
Vmax=4.3V
Vmin=3.3V
Vnorm=3.8V
It must be able to
provide sufficient
current in a transmitting
burst which typically
rises to 2.0A.
VBAT_RF
52, 53
PI
Power supply for
module RF part.
Vmax=4.3V
Vmin=3.3V
Vnorm=3.8V
VRTC
51
PI/
PO
Power supply for
internal RTC circuit.
Vnorm=1.8V when
VBAT
≥ 3.3V.
V
I
=1V~1.9V at
I
IN
max=2uA when
VBAT is not applied.
If unused, keep this pin
open.
VDD_EXT
29
PO
Provide 1.8V for
external circuit.
Vnorm=1.8V
I
O
max=20mA
Power supply for
external GPIO’s pull up
circuits.
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