MCP23008-ESLASHSS datasheet(10/40 Pages) MICROCHIP

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MCP23008/MCP23S08

DS21919B-page 10

1.6.3

INTERRUPT-ON-CHANGE

CONTROL (GPINTEN) REGISTER

The GPINTEN register controls the interrupt-on-

change feature for each pin.

If a bit is set, the corresponding pin is enabled for

interrupt-on-change.

The

DEFVAL

and

INTCON

registers must also be configured if any pins are

enabled for interrupt-on-change.

GPINTEN – INTERRUPT-ON-CHANGE PINS (ADDR 0x02)

R/W-0

GPINT7

GPINT6

GPINT5

GPINT4

GPINT3

GPINT2

GPINT1

GPINT0

bit 7

bit 0

bit 7-0

GPINT7:GPINT0: General purpose I/O interrupt-on-change bits <7:0>.

= Enable GPIO input pin for interrupt-on-change event.

= Disable GPIO input pin for interrupt-on-change event.

Refer to INTCON and GPINTEN.

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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