Product Specs

厦门市思芯微科技有限公司
XIAMENSHI C-CHIP TECHNOLOGY CO., LTD.
Address：1001C, 166 Tapu East Road, Siming District, Xiamen City, Fujian Province, China
TEL:[phone] FAX: [phone]
Website Address：WWW.C-CHIP.COM.CN
C-8031S V1.1
9 of 10
8. Pin function description：
9.Considerations：
A．About the WIFI application environment, wireless signals are easily influenced by the surrounding
environment, such as trees and metal will absorb wireless signals, so in practical applications, the
distance of data transmission will be affected to a certain extent.
B．Because of the shielding effect of metal shell on radio frequency signal, it is recommended not to
install in metal shell.
C．PCB Layout：Because the metal will weaken the function of the antenna, it is strictly forbidden to
paving and wiring under the module antenna when the module is laid out, it’s better if empty.
Pin
Symb
I/O
Description
1
GND
GND
GND
2
P08
I/O
P8 or PWM 2
3
P07
I/O
P7 or PWM 1
4
P23
I/O
P23 or ADC
5
RST
I/O
Chip enable, active high
6
P24
I/O
P24 or PWM 4
7
P26
I/O
P26 or PWM 5
8
1TX
I/O
P11/UART1_TXD used to debug UART emission
9
1RX
I/O
P10/UART1_RXD used to debug UART reception
10
P09
I/O
P9 or PWM 3
11
3V3
PW
Power input(3.3V)