MCP23S08T-ESLASHP datasheet(10/44 Pages) MICROCHIP

No. de pieza	MCP23S08T-E/P

Descripción Electrónicos	8-Bit I/O Expander with Serial Interface

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Fabricante Electrónico	MICROCHIP [Microchip Technology]

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MCP23008/MCP23S08

DS21919D-page 10

1.6.1

I/O DIRECTION (IODIR) REGISTER

Controls the direction of the data I/O.

When a bit is set, the corresponding pin becomes an

input. When a bit is clear, the corresponding pin

becomes an output.

REGISTER 1-1:

IODIR – I/O DIRECTION REGISTER (ADDR 0x00)

R/W-1

IO7

IO6

IO5

IO4

IO3

IO2

IO1

IO0

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-0

IO7:IO0: These bits control the direction of data I/O <7:0>

1 = Pin is configured as an input.

0 = Pin is configured as an output.

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MCP23S08T-E/P Datasheet(PDF) 10 Page - Microchip Technology

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