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MCP23008-E/SS Datasheet(PDF) 16 Page - Microchip Technology |
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MCP23008-E/SS Datasheet(HTML) 16 Page - Microchip Technology |
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16 / 40 page  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 R-x R-x R-x R-x R-x ICP7 ICP6 ICP5 ICP4 ICP3 ICP2 ICP1 ICP0 bit 7 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 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 |
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