MCP23008-ESLASHP datasheet(14/44 Pages) MICROCHIP

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MCP23008/MCP23S08

DS21919D-page 14

1.6.5

INTERRUPT CONTROL (INTCON)

The INTCON register controls how the associated pin

value is compared for the interrupt-on-change feature.

If a bit is set, the corresponding I/O pin is compared

against the associated bit in the DEFVAL register. If a

bit value is clear, the corresponding I/O pin is compared

against the previous value.

INTCON – INTERRUPT-ON-CHANGE CONTROL REGISTER (ADDR 0x04)

R/W-0

IOC7

IOC6

IOC5

IOC4

IOC3

IOC2

IOC1

IOC0

bit 7

bit 0

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

bit 7-0

IOC7:IOC0: These bits control how the associated pin value is compared for interrupt-on-change

<7:0>

1 = Controls how the associated pin value is compared for interrupt-on-change.

0 = Pin value is compared against the previous pin value.

Refer to INTCON and GPINTEN.

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