Microchip Technology Inc
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MCP23S08

8-Bit SPI I/O Expander with Serial Interface

Status: In Production

Features:

  • 8-bit port expander with interrupt output
  • 2 address inputs for up to 4 devices on one bus
  • 25mA sink/source capability per I/O
  • Supports up to 10MHz SPI™ clock speeds
  • Internal power-on-reset (POR)
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MCP23X08 device provides 8-bit, general purpose, parallel I/O expansion for I2C bus or SPI applications. The two devices differ in the number of hardware address pins and the serial interface:
• MCP23008 – I2C interface; three address pins
• MCP23S08 – SPI interface; two address pins
The MCP23X08 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. 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.

Additional Features

     

    • 8-bit port expander with interrupt output
    • 2 address inputs for up to 4 devices on one bus
    • 25mA sink/source capability per I/O
    • Supports up to 10MHz SPI™ clock speeds
    • Internal power-on-reset (POR)
Parametrics
Name
Value
Device Description
8-bit I/O Port Expander
Operating Voltage Range (V)
1.8 to 5.5
Operating Temp Range (°C)
-40 to 125
Interface
SPI
Max. Bus Frequency (kBits/s)
10000

Documents

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Data Sheets

08/24/2007
649KB

Product Selection Tools

Development Environment

  • Demo & Evaluation Boards
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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MCP23008/MCP23S08 Evaluation Board
MCP23008/MCP23S08 Evaluation Board ( MCP23X08EV )

The MCP23X08 8-bit GPIO Expander Evaluation Board demonstrates simple input/output functionality of the MCP23008 (I2C interface) and the MCP23S08 (SPI interface). The system demonstrates the simplicity of monitoring four inputs and applying the level to associated outputs.

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PICkit Serial SPI demo board
PICkit Serial SPI demo board ( PKSERIAL-SPI1 )

The PICkit™ Serial SPI Demo Board was designed to easily connect to the PICkit Serial Analyzer (DV164122). The PICkit Serial Analyzer provides the SPI master mode serial communications and power for the PICkit™ Serial SPI Demo Board. The devices on the demo board operate in the SPI slave mode and can easily be connected to virtually any demo or development board by connecting the...

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Operating Voltage (V)
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RoHS Information

Part Number
Device Weight
Shipping Weight
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP23S08-E/P
1.248000
2.200000
18
PDIP
.300in
Matte Tin
e3
Rohs icon
efup china icon
MCP23S08T-E/SO
0.481000
1.000909
18
SOIC
.300in
Matte Tin
e3
Rohs icon
efup china icon
MCP23S08-E/SO
0.481000
0.857143
18
SOIC
.300in
Matte Tin
e3
Rohs icon
efup china icon
MCP23S08T-E/ML
0.043100
0.212121
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP23S08-E/ML
0.043100
0.076923
20
QFN
4x4x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
MCP23S08T-E/SS
0.164200
0.416250
20
SSOP
.209in
Matte Tin
e3
Rohs icon
efup china icon
MCP23S08-E/SS
0.164200
0.343284
20
SSOP
.209in
Matte Tin
e3
Rohs icon
efup china icon
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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