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5
UART Data Receive
GPIO
6
UART sends request of
data transmission
GPIO
7
UART
transmission permission
GPIO
8
Ethernet output+
9
Ethernet output-
10
Ethernet Input+
11
Ethernet Input-
14
WiFi status Indication
15
Module reset signal
16
Indicate
status
process
17
Restore configuration
21
UART1 Data Receive
22
UART1 Data Transmit
23
Output 1.8V
25
2.4GHz Antenna
12,13
Retain
3.2
3.2
Mechanical
Mechanical
Size
Size
3.2
3.2 Mechanical
Mechanical Size
Size
USR-WIFI232-A/B/C modules physical size (25x40mm) as follows:
3.2.1 USR-WIFI232-A/B
USR-WIFI232-A/B module Mechanical Size:
Jinan USR IOT Technology Limited
USR-WIFI232-A/B/C User Manual
UART_RXD
GPIO4
UART_RTS
GPIO5
receives
data
UART_CTS
GPIO6
PHY_TX+
PHY_TX-
PHY_RX+
PHY_RX-
nlink
nRST
the
module
nReady
of
power
on
nReload
NC
NC
1.8V
ANT
NC
Page 16 of 93
http://www.usriot.com
I
can be configured as
GPIO pins, and can
I/O
change
GPIO
O
status
through
command
I/O
I
I/O
O
+1.8V Ethernet Data
Interface(Module with
O
external
I
reference voltage)
I
O
"0"- WIFI connection
available, "1"- No WIFI
connection.
I
"Low ( 0 )" effective
reset input.
The
reset
should be kept more
than 300ms
O
"0" - Finish module
boot up process;
"1" - Module boot up
not finish.
I
Module will Restore
factory
configuration after set
this pin "0" more than
1s, then set "1".
NC
NC
O
1.8V@300mA, to the
Eth application
O
50ohm
impedance
control line
NC
pin
AT
1.8V
duration
default
tec@usr.cn
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