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MCP23009ESS Datenblatt(PDF) 26 Page - Microchip Technology

Teilenummer MCP23009ESS
Bauteilbeschribung  8-Bit I/O Expander with Open-Drain Outputs
PDF  50 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP23009ESS Datenblatt(HTML) 26 Page - Microchip Technology

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MCP23009/MCP23S09
DS22121B-page 26
© 2009 Microchip Technology Inc.
1.6.11
OUTPUT LATCH REGISTER (OLAT)
The OLAT register provides access to the output
latches. A read from this register results in a read of the
OLAT and not the port itself. A write to this register
modifies the output latches that modifies the pins
configured as outputs.
REGISTER 1-11:
OLAT – OUTPUT LATCH REGISTER 0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
OL7
OL6
OL5
OL4
OL3
OL2
OL1
OL0
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
OL7:OL0: Reflects the logic level on the output latch <7:0>.
1
=Logic-high
0
= Logic-low



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