MCP23009ESS datasheet(23/50 Pages) MICROCHIP

部件名	MCP23009ESS

功能描述	8-Bit I/O Expander with Open-Drain Outputs

PDF	50 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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23 / 50 page

DS22121B-page 23

MCP23009/MCP23S09

1.6.8

INTERRUPT FLAG REGISTER

The INTF register reflects the interrupt condition on the

port pins of any pin that is enabled for interrupts via the

GPINTEN register. A ‘set’ bit indicates that the

associated pin caused the interrupt.

This register is ‘read only’. Writes to this register will be

ignored.

INTF – INTERRUPT FLAG REGISTER

R-0

INT7

INT6

INT5

INT4

INT3

INT2

INT1

INT0

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

INT7:INT0: Reflects the interrupt condition on the port. Will reflect the change only if interrupts are

enabled (GPINTEN) <7:0>.

= Pin caused interrupt

= Interrupt not pending

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