Product Info

LTE Standard Module Series
EG91 Series Hardware Design
EG91_Series_Hardware_Design
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NOTES
1.
1)
PWRKEY output voltage is 0.8V because of the diode drop in the Qualcomm chipset.
2. Keep all RESERVED pins and unused pins unconnected.
3. GND pads should be connected to ground in the design.
4. Please note that the definition of pin 49 and 56 are different among EG91-NA/-NS/-VX/-EX/-NAX
/-AUX and EG91-E. For more details, please refer to Table 4.
3.3. Pin Description
The following tables show the pin definition and description of EG91 series module.
Table 3: IO Parameters Definition
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
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’s baseband
part
Vmax=4.3V
Vmin=3.3V
Vnorm=3.8V
It must be provided with
sufficient current up to
0.8A.