Pin no
|
The pin name
|
Pin type
|
Pin usage
|
|
1
|
GND
|
-
|
Ground, connected to the power reference ground
|
|
2
|
RST_N
|
I
|
Reset pin, low active (built-in pull-up resistor 47k)
|
|
3
|
EN
|
I
|
OPL1000 chip enable pin, high level enable (built-in pull-up resistor 47k)
|
|
4
|
GPIO0
|
I/O
|
Universal IO port (not currently in use)
|
|
5
|
GPIO1
|
I/O
|
Universal IO port (not currently in use)
|
|
6
|
TXD
|
I/O
|
TTL serial output, connected to external RXD input pin (OPL1000 GPIO2)
|
|
7
|
RXD
|
I/O
|
TTL serial input, connected to external TXD output pin (OPL1000 GPIO3)
|
|
8
|
GPIO4
|
I/O
|
Universal IO port (not currently in use)
|
|
9
|
GND
|
-
|
Ground, connected to the power reference ground
|
|
10
|
GPIO5
|
I/O
|
The Socket connection indicates that the connection output is set to be high and
the disconnect output is low
|
|
11
|
GPIO6
|
I/O
|
Universal IO port (not yet used, recommended suspension)
|
|
12
|
GPIO23
|
I/O
|
Link connection indicates that the wifi connection output is set to be high and
the wifi output is disconnected at a low level
|
|
13
|
GPIO7
|
I/O
|
Universal IO port (not currently in use)
|
|
14
|
GPIO8
|
I/O
|
Universal IO port (not currently in use)
|
|
15
|
GPIO9
|
I/O
|
Universal IO port (not currently in use)
|
|
16
|
GPIO10
|
I/O
|
Universal IO port (not currently in use)
|
|
17
|
GND
|
-
|
Ground, connected to the power reference ground
|
|
18
|
VCC
|
-
|
The module power supply is being referenced, with voltages ranging from 2.5 V to 3.6 V
|
|
19
|
GPIO11
|
I/O
|
Universal IO port (not currently in use)
|
|
20
|
GPIO18
|
I/O
|
Restore the default parameters, which can only be changed within the first 1 second of power-up, and the low level is valid
|
|
21
|
GPIO19
|
I/O
|
Universal IO port (not currently in use)
|
|
22
|
GPIO20
|
I/O
|
Universal IO port (not currently in use)
|
|
23
|
GPIO21
|
I/O
|
Universal IO port (not currently in use)
|
|
24
|
GPIO22
|
I/O
|
Universal IO port (not currently in use)
|
Home > Products > WiFi ModulesHelp?
