USR IOT USR-TCP232-E2 Manuel utilisateur

USR-TCP232-E2 Hardware Manual www.usriot.com

Jinan USR IOT Technology Limited 1 / 6 h.usriot.com

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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Name

I/O

Voltage

Range

Definition

VDD

5~7V

5.0V power supply.

VCC

3.0~3.6V

3.3V power supply.

GND

Power ground

RST

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.

TXD0

3.0~3.6V

Serial port 1 TX pin.

RXD0

3.0~3.6V

Serial port 1 RX pin.

Reload

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.

Work

3.0~3.6V

Module work LED.

CTS0

3.0~3.6V

Serial port 1 CTS pin. Flow control pin.

RTS0

3.0~3.6V

Serial port 1 RTS pin. Flow control pin.

RXD1

3.0~3.6V

Serial port 2 RX pin.

TXD1

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:

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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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