User's Manual

SPWF04SA, SPWF04SC
Pinout description
5 Pinout description
Table 5. Pinout description
Signal name
Type
Pin number
Main function
Alternate
functions
(1)
Notes
GPIO - general purpose input/output
GPIO[0]
I/O
16
General purpose
input/output Restore to
factory
settings
(2)
Input pull down and
5V tolerant
GPIO[1]
I/O
17
General purpose
input/output/ADC
Input pull down and
5V tolerant
GPIO[2]
I/O
19
General purpose
input/output/PWM
Floating and 5V
tolerant
GPIO[3]
I/O
1
General purpose
input/output
Input pull down and
5V tolerant
GPIO[6]
I/O
22
General purpose
input/output Wake
Up/Sleep
Inhibit
(3)
Input pull down and
5V tolerant
GPIO[4]
I/O
18
General purpose
input/output
GPIO[5]
I/O
20
General purpose
input/output
GPIO[7]
I/O
13
General purpose
input/output STA/Mini
AP
Switch/WPS
Pushbutton
(4)
GPIO[8]
I/O
4
General purpose
input/output
GPIO[9]
I/O
7
General purpose
input/output/SPI
nHostInterrupt
GPIO[11]
I/O
11
GPIO[12]
I/O
12
General purpose
input/output
GPIO[15]
I/O
21
General purpose
input/output/DAC
Monitoring purpose with no alternate function
GPIO[10]
I/O
5
Drives LED, Blinks while
running
GPIO[13]
I/O
15
Drives LED, Wi-Fi link
up
DocID025635 Rev 7 7/18