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MCP23008-E/P Fiches technique(PDF) 19 Page - Microchip Technology

No de pièce MCP23008-E/P
Description  8-Bit I/O Expander with Serial Interface
PDF  44 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP23008-E/P Fiches technique(HTML) 19 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
DS21919D-page 19
MCP23008/MCP23S08
1.6.10
PORT (GPIO) REGISTER
The GPIO register reflects the value on the port.
Reading from this register reads the port. Writing to this
register modifies the Output Latch (OLAT) register.
REGISTER 1-10:
GPIO – GENERAL PURPOSE I/O PORT REGISTER (ADDR 0x09)
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
GP7
GP6
GP5
GP4
GP3
GP2
GP1
GP0
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
GP7:GP0: These bits reflect the logic level on the pins <7:0>
1 = Logic-high.
0 = Logic-low.



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