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MCP23017 I2C Interface 16bit I/O Extension Module

Quick Overview

MCP23017 I2C Interface

Availability: In stock

 Tk 650.00

Details

 

1. Description:

This module is the 16 way IO extension module of the 12C interface, and built in the MCP23017 chip of MicroChip.

The function of the chip is complete. Each IO can be arbitrarily configured as input or output, and a pull up resistor can be set,

and the interrupt function can be enabled for the IO configured as input.

The IO interface has a strong driving capacity, and the current and current can reach 25mA.

      MCP23017 is a high-speed IIC interface. It supports the IIC frequency of 100KHz, 400KHz and 1.7MHz.

The chip has 3 address pins, which can be set up for 8 different addresses.

So 8 modules can be connected through two IIC buses to achieve up to 128 IO extensions.


   This module is flexible in configuration and strong in driving ability. There are many parallel connections.

2. Parameters:

No.

Parameter

Value

1

Operating voltage

3.0V-5.5V

2

Drive chip

MCP23017

3

Number of IO

16 (input, output, interruption)

4

Drive power supply

25mA1

5

12C frequency

100KHz, 400KHz, 1..7MHz

6

working temperature

-40 Celsius -125  Celsius

7

Chip level

Industrial grade

8

Parallel multiple

Up to 8

9

Driver

51 and Arduino

10

Module size

65mm*19mm

 

3. Pin description:

No.

Pin

Function

Remark

1

VCC

Power source input

3.0V-5.5V

2

GND

Power negative electrode

0V

3

SCL

12C clock line

SCL connecting single chip IO pin or MCU 12C interface

4

SDA

12C data line

SDA connecting single chip IO pin or MCU 12C interface

5

RST

Chip reduction

Low level effective, connecting MCU IO pin or unconnected

6

ITA

GPIOA port interrupt output

Connect MCU IO pin, without connection when interruption

7

ITB

GPIOB port interrupt output

Connect MCU IO pin, without connection when interruption

 

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