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MCP23017

16-Bit I2C I/O Expander with Serial Interface

Status: In Production

Features:

  • 16-bit input/output port expander with interrupt output
  • Cascadable for up to 8 devices on one bus
  • 25mA sink/source capability per I/O
  • Supports 100kHz, 400kHz and 1.7MHz I2C™Compatible compatible modes
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MCP23017/MCP23S17 (MCP23X17) device family provides 16-bit, general purpose parallel I/O expansion for I2C bus or SPI applications. The two devices differ only in the serial interface:
• MCP23017 – I2C interface
• MCP23S17 – SPI interface
The MCP23X17 consists of multiple 8-bit configuration registers for input, output and polarity selection. The system master can enable the I/Os as either inputs or outputs by writing the I/O configuration bits (IODIRA/B). The data for each input or output is kept in the corresponding input or output register. The polarity of the Input Port register can be inverted with the Polarity Inversion register. All registers can be read by the system master.

The 16-bit I/O port functionally consists of two 8-bit ports (PORTA and PORTB). The MCP23X17 can be configured to operate in the 8-bit or 16-bit modes via IOCON.BANK. There are two interrupt pins, INTA and INTB, that can be associated with their respective ports, or can be logically OR’ed together so that both pins will activate if either port causes an interrupt. The interrupt output can be configured to activate under two conditions (mutually exclusive):
1. When any input state differs from its corresponding Input Port register state. This is used to indicate to the system master that an input state has changed.
2. When an input state differs from a preconfigured register value (DEFVAL register).

The Interrupt Capture register captures port values at the time of the interrupt, thereby saving the condition that caused the interrupt. The Power-on Reset (POR) sets the registers to their default values and initializes the device state machine. The hardware address pins are used to determine the device address.


Additional Features

     

  • 16-bit input/output port expander with interrupt output
  • Cascadable for up to 8 devices on one bus
  • 25mA sink/source capability per I/O
  • Supports 100kHz, 400kHz and 1.7MHz I2C™Compatible compatible modes
  •  

     

Parametrics
Name
Value
Device Description
16-bit I/O Port Expander
Operating Voltage Range (V)
1.8 to 5.5
Operating Temp Range (°C)
-40 to 125
Interface
I²C™
Max. Bus Frequency (kBits/s)
1700

Documents

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Data Sheet

07/06/2016
845KB

Product Document

Product Line Card

Development Environment

  • Demo & Evaluation Boards
  • Application Examples
Demo & Evaluation Boards
MCP23X08/17 GPIO Exp Keypad/LCD Demo
MCP23X08/17 GPIO Exp Keypad/LCD Demo ( GPIODM-KPLCD )

The GPIO Expander Keypad and LCD Demo Board is designed to demonstrate the use of the MCP23S08/17 (SPI interface) and the MCP23008/17 (I2C interface) devices in a keypad and LCD example. The MCP23X17 (16-bit) devices interface to a 2x16 LCD module and the MCP23X08 (8-bit) devices interface to a 4x4 keyed matrix.

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MCP23X17 Evaluation Board
MCP23X17 Evaluation Board ( MCP23X17EV )

The MCP23X17 16-bit GPIO Expander Evaluation Board demonstrates simple input/output functionality of the MCP23017 (I2C interface) and the MCP23S17 (SPI interface). The system demonstrates the simplicity of monitoring four pins configured as inputs and applying a predetermined pattern on LEDs connected to the remaining 12 pins configured as outputs.

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP23017T-E/SO
0.770400
1.152500
28
SOIC
.300in
Matte Tin
e3
MCP23017-E/SO
0.770400
1.370370
28
SOIC
.300in
Matte Tin
e3
MCP23017-E/SP
2.087500
3.733333
28
SPDIP
.300in
Matte Tin
e3
MCP23017-E/ML
0.101600
0.163934
28
QFN
6x6x0.9mm
Matte Tin
e3
MCP23017T-E/ML
0.101600
0.332500
28
QFN
6x6x0.9mm
Matte Tin
e3
MCP23017T-E/SS
0.229200
0.333333
28
SSOP
.209in
Matte Tin
e3
MCP23017-E/SS
0.229200
0.489362
28
SSOP
.209in
Matte Tin
e3
MCP23017-E/SSVAO
0.229200
0.489362
28
SSOP
.209in
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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