MCP23016-ISLASHML datasheet(10/38 Pages) MICROCHIP

10 / 38 page

MCP23016

DS20090C-page 10

1.7.5

INTERRUPT CAPTURE REGISTERS

Two registers contain the value of the port that

generated the interrupt:

• INTCAP0 contains the value of GP0 at time of

GP0 change interrupt

• INTCAP1 contains the value of GP1 at time of

GP1 change interrupt

These registers are ‘read-only’ registers (A write to

these registers is ignored).

INTCAP0 - INTERRUPT CAPTURED VALUE FOR PORT REGISTER 0

INTCAP1 - INTERRUPT CAPTURED VALUE FOR PORT REGISTER 1

R-x

ICP0.7

ICP0.6

ICP0.5

ICP0.4

ICP0.3

ICP0.2

ICP0.1

ICP0.0

bit 7

bit 0

bit 7-0

ICP0.0:ICP0.7: Reflects the logic level on the GP0 pins at the time of interrupt due to pin

change

= Logic ‘1’

= Logic ‘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

R-x

ICP1.7

ICP1.6

ICP1.5

ICP1.4

ICP1.3

ICP1.2

ICP1.1

ICP1.0

bit 7

bit 0

bit 7-0

ICP1.0:ICP1.7: Reflects the logic level on the GP1 pins at the time of interrupt due to pin

change

= Logic ‘1’

= Logic ‘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

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