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参数资料
型号： MCP23S09-E/MG
元件分类： 微控制器/微处理器
英文描述： 8 I/O, PIA-GENERAL PURPOSE, PQCC16
封装： 3 X 3 MM, 0.90 MM HEIGHT, PLASTIC, QFN-16
文件页数： 11/50页
文件大小： 607K
代理商： MCP23S09-E/MG
2009 Microchip Technology Inc.
DS22121B-page 19
MCP23009/MCP23S09
1.6.4
DEFAULT COMPARE REGISTER
FOR INTERRUPT-ON-CHANGE
The default comparison value is configured in the
DEFVAL register. If enabled (via GPINTEN and
INTCON) to compare against the DEFVAL register, an
opposite value on the associated pin will cause an
interrupt to occur.
REGISTER 1-4:
DEFVAL – DEFAULT VALUE REGISTER
R/W-0
DEF7
DEF6
DEF5
DEF4
DEF3
DEF2
DEF1
DEF0
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
DEF7:DEF0: Sets the compare value for pins configured for interrupt-on-change from defaults <7:0>.
Refer to INTCON.
If the associated pin level is the opposite from the register bit, an interrupt occurs.
Refer to INTCON and GPINTEN.
相关PDF资料
PDF描述
MCP23S09T-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
MCP23009T-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
MCP23016-I/ML 16 I/O, PIA-GENERAL PURPOSE, PQCC28
MCP23016-I/SS 16 I/O, PIA-GENERAL PURPOSE, PDSO28
MCP23016-I/SO 16 I/O, PIA-GENERAL PURPOSE, PDSO28
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