MCP23008 Просмотр технического описания (PDF) - Unspecified

Номер в каталоге

Компоненты Описание

производитель

MCP23008

8-Bit I/O Expander with Serial Interface

Unspecified 

MCP23008/MCP23S08

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.

REGISTER 1-3:

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

R/W-0 R/W-0 R/W-0 R/W-0

R/W-0

R/W-0

GPINT7 GPINT6 GPINT5 GPINT4 GPINT3 GPINT2

bit 7

R/W-0

GPINT1

R/W-0

GPINT0

bit 0

bit 7-0

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

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

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

Refer to INTCON and GPINTEN.

Legend:

R = Readable bit

- n = Value at POR

W = Writable bit

‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’

‘0’ = Bit is cleared x = Bit is unknown

DS21919B-page 10

© 2005 Microchip Technology Inc.

Share Link: