参数资料
型号: MCP23009-E/MG
厂商: Microchip Technology
文件页数: 16/50页
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 16QFN
标准包装: 120
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: 管件
产品目录页面: 684 (CN2011-ZH PDF)
2009 Microchip Technology Inc.
DS22121B-page 23
MCP23009/MCP23S09
1.6.8
INTERRUPT FLAG REGISTER
The INTF register reflects the interrupt condition on the
port pins of any pin that is enabled for interrupts via the
GPINTEN register. A ‘set’ bit indicates that the
associated pin caused the interrupt.
This register is ‘read only’. Writes to this register will be
ignored.
REGISTER 1-8:
INTF – INTERRUPT FLAG REGISTER
R-0
INT7
INT6
INT5
INT4
INT3
INT2
INT1
INT0
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
INT7:INT0: Reflects the interrupt condition on the port. Will reflect the change only if interrupts are
enabled (GPINTEN) <7:0>.
1
= Pin caused interrupt
0
= Interrupt not pending
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