MCP23S17 Microchip Technology, MCP23S17 Datasheet - Page 21

• Manufacturer Part Number: MCP23S17
• Description: 16-Bit I/O Expander with Serial Interface
• Manufacturer: Microchip Technology

1.6.9
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:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
ICP7
R-x
INTERRUPT CAPTURE REGISTER
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.
ICP6
R-x
INTCAP – INTERRUPT CAPTURED VALUE FOR PORT REGISTER (ADDR 0x08)
W = Writable bit
‘1’ = Bit is set
ICP5
R-x
ICP4
R-x
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
MCP23017/MCP23S17
ICP3
R-x
ICP2
R-x
x = Bit is unknown
ICP1
R-x
DS21952B-page 21
ICP0
R-x
bit 0