MCP23018 查看數據表（PDF） - Microchip Technology

零件编号

产品描述 (功能)

生产厂家

MCP23018

16-Bit I/O Expander with Open-Drain Outputs

Microchip Technology 

MCP23018/MCP23S18

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.

REGISTER 1-5: GPINTEN – INTERRUPT-ON-CHANGE PINS

R/W-0

GPINT7

bit 7

R/W-0

GPINT6

R/W-0

GPINT5

R/W-0

GPINT4

R/W-0

GPINT3

R/W-0

GPINT2

R/W-0

GPINT1

R/W-0

GPINT0

bit 0

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

bit 7-0

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

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

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

DS22103A-page 20

© 2008 Microchip Technology Inc.

Share Link: