USR IOT USR-TCP232-E2 Bedienungsanleitung
USR-TCP232-E2 Hardware Manual www.usriot.com
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USR-TCP232-E2 Hardware Manual
File version: 1.0.0.01
USR-TCP232-E2 Hardware Manual www.usriot.com
Jinan USR IOT Technology Limited 2 / 6 h.usriot.com
Content
USR-TCP232-E2 Hardware Manual ............................................................................................. 1
1. Product Overview ................................................................................................................... 3
1.1. Dimension ..................................................................................................................... 3
1.2. Encapsulation ................................................................................................................ 3
1.3. Pin Definition................................................................................................................. 3
2. Hardware Design .................................................................................................................... 5
2.1. Power Interface............................................................................................................. 5
2.2. UART Interface.............................................................................................................. 5
3. Contact ................................................................................................................................... 6
4. Disclaimer............................................................................................................................... 6
5. Update History........................................................................................................................ 6
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1.Product Overview
1.1. Dimension
Module dimension diagram as follow:
Figure 1 Dimension diagram
1.2. Encapsulation
User can download PCB Library from http://www.usriot.com/usr-tcp232_pcb/.
1.3. Pin Definition
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PIN
Name
I/O
Voltage
Range
Definition
1
VDD
P
5~7V
5.0V power supply.
2
VCC
P
3.0~3.6V
3.3V power supply.
3
GND
P
-
Power ground
4
RST
I
3.0~3.6V
Resetting the module and taking effect in low level. Inputting low
level for 200ms will reset the module. User can connect RST pin
to MCU I/O to reset the module through MCU controlling when
exceptions occur.
5
TXD0
O
3.0~3.6V
Serial port 1 TX pin.
6
RXD0
I
3.0~3.6V
Serial port 1 RX pin.
7
Reload
I
3.0~3.6V
When module are working normally, user should make Reload pin
not available or connect to high level.
Inputting low level will enable configuring the module by serial
port. User should power the module firstly, then pull down Reload
pin to enter serial port configuration mode.
When user uses Reload pin to restore the default settings, serial
port can’t have data transmission.
8
Work
O
3.0~3.6V
Module work LED.
9
CTS0
I
3.0~3.6V
Serial port 1 CTS pin. Flow control pin.
10
RTS0
O
3.0~3.6V
Serial port 1 RTS pin. Flow control pin.
11
RXD1
I
3.0~3.6V
Serial port 2 RX pin.
12
TXD1
O
3.0~3.6V
Serial port 2 TX pin.
Figure 2 Pin definition
P: The pin of power supply
I: Input pin
O: Output pin
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2.Hardware Design
2.1. Power Interface
USR-TCP232-E2 adopt 3.3V/5V dual power supply and they can’t be used simultaneously. Peak current
about 200mAand working current about 150mA.
1. VCC: 3.3V DC power supply. Voltage range: 3.0~3.6V and be suitable for 3.3V MCU.
2. VDD: 5V DC power supply. Voltage range: 4.75V~5.5V. When user connect to 5V MCU, please refer to 2.3.
UART Interface switching circuit .
2.2. UART Interface
UART is serial data interface that can connect the RS-232 chip and transfer to the RS-232 level. UART
interface includes TXD/RXD.Take the RS-232 level as a reference circuit diagram as follow:
Figure 3 UART interface
When communicate to MCU with 3.3V, just connecting TXD of module to RXD of MCU and RXD of module to
TXD of MCU. When communicate to MCU with 5V, switching circuit is necessary. Switching circuit diagram
as follows:
USR-TCP232-E2 Hardware Manual www.usriot.com
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Figure 4 Switching circuit
3.Contact
Company: Jinan USR IOT Technology Limited
Address: Floor 11, Building No.1, No.1166, Xinluo Street, Gaoxin District, Jinan city, Shandong province,
250101 China
Tel: 86-531-88826739
Web: www.usriot.com
Support: h.usriot.com
Email: sales@usr.cn
4.Disclaimer
This document provide the information of USR-TCP232-E2 products, it hasn’t been granted any intellectual
property license by forbidding speak or other ways either explicitly or implicitly. Except the duty declared in
sales terms and conditions, we don’t take any other responsibilities. We don’t warrant the products sales and
use explicitly or implicitly, including particular purpose merchant-ability and marketability, the tort liability of
any other patent right, copyright, intellectual property right. We may modify specification and description at
any time without prior notice.
5.Update History
2017-10-17 V1.0.0.01 created.
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