參數(shù)資料
型號(hào): MCP23S08
廠(chǎng)商: Microchip Technology Inc.
英文描述: 8-Bit I/O Expander with Serial Interface
中文描述: 8位的I / O串行接口擴(kuò)展
文件頁(yè)數(shù): 16/40頁(yè)
文件大?。?/td> 498K
代理商: MCP23S08
MCP23008/MCP23S08
DS21919B-page 16
2005 Microchip Technology Inc.
1.6.9
INTERRUPT CAPTURE (INTCAP)
REGISTER
The INTCAP register captures the GPIO port value at
the time the interrupt occurred. The register is ‘read-
only’ and is updated only when an interrupt occurs. The
register will remain unchanged until the interrupt is
cleared via a read of INTCAP or GPIO.
REGISTER 1-9:
INTCAP – INTERRUPT CAPTURED VALUE FOR PORT REGISTER
(ADDR 0x08)
R-x
R-x
R-x
ICP7
ICP6
ICP5
ICP4
bit 7
R-x
R-x
ICP3
R-x
ICP2
R-x
ICP1
R-x
ICP0
bit 0
bit 7-0
ICP7:ICP0:
These bits reflect the logic level on the port pins at the time of interrupt due to pin
change <7:0>.
1
= Logic-high.
0
= Logic-low.
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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