參數(shù)資料
型號(hào): MCP23S18-E/SO
元件分類(lèi): 微控制器/微處理器
英文描述: PIA-GENERAL PURPOSE, PDSO28
封裝: 0.300 INCH, PLASTIC, SOIC-28
文件頁(yè)數(shù): 13/56頁(yè)
文件大?。?/td> 738K
代理商: MCP23S18-E/SO
MCP23018/MCP23S18
DS22103A-page 20
2008 Microchip Technology Inc.
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
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>
1
= Enable GPIO input pin for interrupt-on-change event
0
= Disable GPIO input pin for interrupt-on-change event.
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