SimCom SIM5300E

SIM5300E_Hardware_Design_V1.02
9
IO
Bidirectional input / output
DI
Digital input
DO
Digital output
AI
Analog input
AO
Analog output
Table 5: Pin description
Pin name
Pin number
IO
Description
Comment
Power supply
VBAT
55,56,57
PI
Power supply
VRTC
26
PI/
PO
Power supply for RTC
It is recommended
to connect with a
battery or a
capacitor (e.g.
4.7uF).
VDD_EXT
15
PO
1.8V output power supply
At all times,
VDD_EXT must not
be influenced by
any external voltage
above 2V. If it is
unused, keep
floating.
GND
2,17,18,29,39
,45,46,54,58,
59,61,62,63,6
4,65
Ground
Power on/down
PWRKEY
1
DI
PWRKEY should be pulled low at least
100ms to power on or 1s to power
down the module.
Pulled up internally.