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HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module
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  • HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module
  • HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module
  • HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module
  • HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module
  • HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module

HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module

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HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module 8.76 (0)
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Description:

Item

parameter

 

Wireless parameters

Wireless standard

IEEE802.11 b/g/n

Frequency Range

2.412 GHz–2.484 GHz

Antenna interface

Onboard PCB Antenna

Transmit power

802.11b: 20 dBm (typical)

802.11g: 17 dBm (typical)

802.11n: 14 dBm (typical)

Receiving sensitivity

802.11b: –91 dBm @ 11Mbps (typical)

802.11g: –75 dBm @ 54Mbps (typical)

802.11n: –72 dBm @ MCS7 (typical)

Hardware parameters

Interface Type

standard 3.3V TTL level UART interface, GPIO

Interface rate

110bps–921600bps

Operating Voltage

3.3±0.3 V

Working current

80mA (Typical average current)

Working humidity

5%–90% (No condensation)

storage temperature

–40℃–+85℃

Operating temperature

–40℃–+85℃

Dimensions

26.9mm×13mm

Software parameters

Network mode

STA/softAP/softAP+STA

Security system

WEP / WPA–PSK / WPA2–PSK

Encryption type

WEP64 / WEP128 / TKIP / CCMP(AES)

Serial command

AT+ Instruction Set

Network protocol

TCP/UDP//HTTP/


Pin description:

HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module

Pin

Function

Direction

Explanation

1

UART_TX

O

UART data output, 3.3V level; Prohibited to pull down when power-up.

2

UART_RX

I

UART data input, 3.3V level.

3

GPIO15

I/O

General input and output, the module internal have a pull-down resistor, the module work when power up;
 
This pin connect to high level, the module does not work when power up.

4

GPIO13

I/O

General  input and output

5

ADC

I

AD input, the voltage range is 0V to 1.024V, the corresponding value is
 
0 - 1024, 10 bit precision.

6

CH_PD

I

Module enable input, the default pull-up module to work; connect to low level will
 
close the module internal WIFI chip, the current is very small (not more than 10 μA).

7

GPIO16

I/O

General  input and output

8

GPIO14

I/O

General  input and output

9

GPIO12

I/O

General  input and output

11

NRST

I

Module hardware reset input (low level active )

12

VCC

I

Power supply, 3.3 ± 0.3 V

13

GND

I

Ground

14

GND

 

I

Ground

15

GPIO2

I/O

General input / output; internal pull-up, when power-on prohibit hardware pull-down.

16

GPIO4

I/O

LED indication output (high level active)

17

GPIO0

I/O

General input / output; floating is operating mode, pull-down is the firmware download mode.

18

GPIO5

I/O

Key input for Smart Config and restore factory settings (high level active )

23

GPIO4

I/O

LED indication output (high level active)

26

GPIO5

I/O

Key input for Smart Config and restore factory settings(high level active )

27

VCC

I

Power supply, 3.3 ± 0.3 V

28

GND

I

Ground

29

UART_RX

I

UART data input, 3.3V level.

30

UART_TX

O

UART data output, 3.3V level; Prohibited to pull down when power-up.

10

19

20

21

22

24

25

NC    

AT command:

NO

command

description

Basic command

 

1

AT+H/HELP

Print the AT command table

2

AT+E

Module AT command echoes the query / settings

3

AT+V/VER/VERSION

Module firmware version query

4

AT+RESET

Module restart

5

AT+DEFAULT

Module restored to factory settings

6

AT+ENTM

Exit command mode

7

AT+MAC

Module MAC query

8

AT+MID

Module ID Query / Settings

9

AT+WSCAN

Search around AP

10

AT+SEARCH

UDP broadcast search port and keyword

WIFI settings

11

AT+WMODE

Module WiFi working mode query / Settings

12

AT+WSTA

Associate AP queries / settings

13

AT+WANN

STA's network parameter query / settings

14

AT+WSLK

Module WIFI link status query

15

AT+WAP

Module AP Wi-Fi configuration parameter query / settings

16

AT+LANN

Module AP mode IP query / settings

Transparent settings

17

AT+UART

UART interface parameter query / settings

18

AT+SOCKSTATUS

Socket switch query / settings

19

AT+SOCK

Socket parameter query / settings

20

AT+SOCKLK

Socket TCP connection status query

21

AT+SOCKAUTO

Socket TCP Reconnect Mechanism Query / Setup


Package included:

1 x HC-22 Wifi Serial Module


HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module


HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module


HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module


HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module


HC-22 Wifi Serial Module ESP8266 Wireless Pass Through Serial Port WIFI Module

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