Serial to Ethernet module USR-TCP232-T24 series
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Jinan USR IOT Technology Limited
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2
2
2
2.1.2
.1.2
.1.2
.1.2 Hardware
Hardware
Hardware
Hardware Description
Description
Description
Description
2.1.21
2.1.21
2.1.21
2.1.21 Pin
Pin
Pin
Pin Description
Description
Description
Description
N
N
N
No.
o.
o.
o.
Pin
Pin
Pin
Pin
Function
Function
Function
Function
Descrip
Descrip
Descrip
Descriptions
tions
tions
tions
1
GND
Signal ground
GND
2
RST
RESET
Pin received 200ms low to reset the whole module.
If you do not use, can be suspended.
Note: The module is powered automatic reset, it is
recommended that connect the MCU IO port, reset the MCU
control module in a particular case.
3
ISP
Update pin
This pin to ground to the module power module can be
upgraded.
If you do not use, can be suspended.
4
RXD
Module data is
received
Data receiving end of the module, TTL level 5V or 3.3V
microcontroller
5
TXD
Module data
transmission
Data transmission end of the module, TTL level can be
connected to 5V or 3.3V microcontroller
6
CFG
Serial ports
Configuration pins
Low, you can use the serial port module configuration.
Normal working hours left floating or tied HIGH.
Note: give the power module, and then pulled down the CFG
pin to enter the serial configuration state.
7
LD2
Network data
instructions
Network data indicator LED connected to VCC, without the
current limiting resistance (module existing)
8
LD1
Network connection
status indicator
Network connection status indicator LED connected to VCC,
without the current limiting resistor (module already)
9
2V5
PHY chip
Output voltage
PHY chip to control the voltage output, access networks
transformer center tap
10
RX+
Received
Receive Data+
11
RX-
Received signal -
Receive Data-
12
TX+
Transceiver Data+
Transceiver Data+
13
TX-
Transceiver Data-
Transceiver Data-
14
RTS
the alternate pin
Can be used as RS485 enable pin
15
CTS
the alternate pin
Can be used as a network connection status indicator pin
16
VCC
Power supply
Power supply: 3.3V @ 200mA
