MCP23009ESS datasheet(18/50 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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18 / 50 page

MCP23009/MCP23S09

DS22121B-page 18

1.6.3

INTERRUPT-ON-CHANGE

CONTROL 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

R/W-0

GPINT7

GPINT6

GPINT5

GPINT4

GPINT3

GPINT2

GPINT1

GPINT0

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

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

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

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

Refer to INTCON and DEFVAL.

MCP23009ESS 数据表(PDF) 18 Page - Microchip Technology

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