Pin Description - Quectel EG91 Series Hardware Design

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
EG91-NA/-NS/-VX/-EX/-NAX/-NAXD/-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
AI
AO
DI
DO
IO
OD
PI
PO
Table 4: Pin Description
Power Supply
Pin Name Pin No.
VBAT_BB 32, 33
EG91_Series_Hardware_Design
the definition of
Description
Analog Input
Analog Output
Digital Input
Digital Output
Bidirectional
Open Drain
Power Input
Power Output
I/O Description
Power supply for
PI module's baseband
part
LTE Standard Module Series
EG91 Series Hardware Design
pin 49 and 56
DC
Characteristics
Vmax=4.3V
Vmin=3.3V
Vnorm=3.8V
are different among
Comment
It must be provided with
sufficient current up to
0.8A.
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