參數(shù)資料
型號(hào): MCP23016
廠商: Microchip Technology Inc.
英文描述: 16-Bit I2C I/O Expander(16位I/O口擴(kuò)展芯片)
中文描述: 16位I2C I / O擴(kuò)展(16位的I / O口擴(kuò)展芯片)
文件頁(yè)數(shù): 7/38頁(yè)
文件大?。?/td> 578K
代理商: MCP23016
2003 Microchip Technology Inc.
DS20090B-page 7
MCP23016
1.7.2
OUTPUT LATCH REGISTERS
Two registers provide access to the two port output
latches:
OLAT0 (provides access to the output latch for
port GP0)
OLAT1 (provides access to the output latch for
port GP1)
A read from these registers results in a read of the latch
that controls the output and not the actual port. A write
to these registers updates the output latch that controls
the output.
REGISTER 1-3:
OLAT0 - OUTPUT LATCH REGISTER 0
R/W-0
R/W-0
OL0.6
OL0.5
REGISTER 1-4:
OLAT1 - OUTPUT LATCH REGISTER 1
R/W-0
R/W-0
OL1.6
OL1.5
R/W-0
OL0.7
bit 7
R/W-0
OL0.4
R/W-0
OL0.3
R/W-0
OL0.2
R/W-0
OL0.1
R/W-0
OL0.0
bit 0
bit 7-0
OL0.0:O0.7
: Reflects the logic level on the output latch.
1
= Logic ‘
1
0
= Logic ‘
0
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
1
’ = Bit is set
U = Unimplemented bit, read as ‘0’
0
’ = Bit is cleared
x = Bit is unknown
R/W-0
OL1.7
bit 7
R/W-0
OL1.4
R/W-0
OL1.3
R/W-0
OL1.2
R/W-0
OL1.1
R/W-0
OL1.0
bit 0
bit 7-0
OL1.0:O1.7
: Reflects the logic level on the output latch.
1
= Logic ‘
1
0
= Logic ‘
0
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
1
’ = Bit is set
U = Unimplemented bit, read as ‘0’
0
’ = Bit is cleared
x = Bit is unknown
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