MCP23009ESS datasheet(20/50 Pages) MICROCHIP

20 / 50 page

MCP23009/MCP23S09

DS22121B-page 20

1.6.5

INTERRUPT CONTROL REGISTER

The INTCON register controls how the associated pin

value is compared for the interrupt-on-change feature.

If a bit is set, the corresponding I/O pin is compared

against the associated bit in the DEFVAL register. If a

bit value is clear, the corresponding I/O pin is compared

against the previous value.

INTCON – INTERRUPT-ON-CHANGE CONTROL REGISTER

R/W-0

IOC7

IOC6

IOC5

IOC4

IOC3

IOC2

IOC1

IOC0

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

IOC7:IOC0: Controls how the associated pin value is compared for interrupt-on-change <7:0>.

= Pin value is compared against the associated bit is DEFVAL register

= Pin value is compared against the previous pin value

Refer to DEFVAL and GPINTEN.

MCP23009ESS 数据表(PDF) 20 Page - Microchip Technology

MCP23009ESS 数据表(HTML) 20 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

数据表下载