S erial to Ethernet module USR-TCP232-T24 series http://en.usr.cn
Jinan USR IOT Technology Limited Page 11 of 53 tec@usr.cn
2.2.2
2.2.2
2.2.2
2.2.2 Hardware
Hardware
Hardware
Hardware Description
Description
Description
Description
2.2.21
2.2.21
2.2.21
2.2.21 Pin
Pin
Pin
Pin description
description
description
description
P
P
P
P in
in
in
in N
N
N
N ame
ame
ame
ame D
D
D
D escription
escription
escription
escription
VDD Power 1 4.5~5.5V
VCC Power 2 3.3V
GND GND Power and Communications Ground
RST Reset pin 200ms GND reset the module
TXD UART transmission pin 5v tolerance
RXD UART receive pin 5v tolerance
CFG Configure pin
Configure mode when this pin GND, normal
mode when VCC or idle
Module in the upper left four spare pins from
right to left :
Pin
Pin
Pin
Pin Name
Name
Name
Name D
D
D
D escription
escription
escription
escription
LINK LINK a lternate p in Network connectivity status indicator pin
EN EN a lternate p i n RS485 enable pin
ISP Update pin
This pin to ground to the module power
module can be upgraded.