MCP23S18 Microchip Technology, MCP23S18 Datasheet - Page 29

• Manufacturer Part Number: MCP23S18
• Description: 16-Bit I/O Expander
• Manufacturer: Microchip Technology

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1.6.11
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 1-13:
© 2008 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
R/W-0
OL7
OUTPUT LATCH REGISTER (OLAT)
OL7:OL0: Reflects the logic level on the output latch <7:0>.
1 = Logic-high.
0 = Logic-low.
R/W-0
OL6
OLAT – OUTPUT LATCH REGISTER 0
W = Writable bit
‘1’ = Bit is set
R/W-0
OL5
R/W-0
OL4
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
MCP23018/MCP23S18
R/W-0
OL3
R/W-0
OL2
x = Bit is unknown
R/W-0
OL1
DS22103A-page 29
R/W-0
OL0
bit 0