参数资料
型号: MCP23018T-E/SO
厂商: Microchip Technology
文件页数: 10/56页
文件大小: 0K
描述: IC I/O EXPANDER I2C 16B 28SOIC
标准包装: 1,600
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: 带卷 (TR)
MCP23018/MCP23S18
DS22103A-page 18
2008 Microchip Technology Inc.
1.6.1
I/O DIRECTION REGISTER
Controls the direction of the data I/O.
When a bit is set, the corresponding pin becomes an
input. When a bit is clear, the corresponding pin
becomes an output.
REGISTER 1-3:
IODIR – I/O DIRECTION REGISTER
R/W-1
IO7
IO6
IO5
IO4
IO3
IO2
IO1
IO0
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
IO7:IO0: Controls the direction of data I/O <7:0>
1
= Pin is configured as an input.
0
= Pin is configured as an output.
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