参数资料
型号: MCP23018-E/SO
厂商: Microchip Technology
文件页数: 13/56页
文件大小: 0K
描述: IC I/O EXPANDER I2C 16B 28SOIC
标准包装: 27
接口: I²C
输入/输出数: 16
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: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC
包装: 管件
产品目录页面: 684 (CN2011-ZH PDF)
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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