参数资料
型号: MCP23009T-E/MG
厂商: Microchip Technology
文件页数: 17/50页
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 16QFN
标准包装: 3,300
接口: I²C
输入/输出数: 8
中断输出:
频率 - 时钟: 3.4MHz
电源电压: 1.8 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-VFQFN 裸露焊盘
供应商设备封装: 16-QFN-EP(3x3)
包装: 带卷 (TR)
MCP23009/MCP23S09
DS22121B-page 24
2009 Microchip Technology Inc.
1.6.9
INTERRUPT CAPTURE REGISTER
The INTCAP register captures the GPIO port value at
the time the interrupt occurred. The register is ‘read
only’ and is updated only when an interrupt occurs. The
register will remain unchanged until the interrupt is
cleared via a read of INTCAP or GPIO.
REGISTER 1-9:
INTCAP – INTERRUPT CAPTURED VALUE FOR PORT REGISTER
R-x
ICP7
ICP6
ICP5
ICP4
ICP3
ICP2
ICP1
ICP0
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
ICP7:ICP0: Reflects the logic level on the port pins at the time of interrupt due to pin change <7:0>.
1
=Logic-high
0
= Logic-low
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