Product Info

LTE Standard Module Series
EG91 Hardware Design
EG91_Hardware_Design 21 / 96
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 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.
Table 3: IO Parameters Definition
Table 4: 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_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.
NOTES