參數(shù)資料
型號: MCP23008
廠商: Microchip Technology Inc.
英文描述: 8-Bit I/O Expander with Serial Interface
中文描述: 8位的I / O串行接口擴展
文件頁數(shù): 8/40頁
文件大?。?/td> 498K
代理商: MCP23008
MCP23008/MCP23S08
DS21919B-page 8
2005 Microchip Technology Inc.
1.6.1
I/O DIRECTION (IODIR) 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 1-1:
IODIR – I/O DIRECTION REGISTER (ADDR 0x00)
R/W-1
R/W-1
R/W-1
IO7
IO6
IO5
bit 7
R/W-1
IO4
R/W-1
IO3
R/W-1
IO2
R/W-1
IO1
R/W-1
IO0
bit 0
bit 7-0
IO7:IO0:
These bits
control the direction of data I/O <7:0>.
1
= Pin is configured as an input.
0
= Pin is configured as an output.
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
1
’ = Bit is set
U = Unimplemented bit, read as ‘
0
0
’ = Bit is cleared
x = Bit is unknown
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MCP23008-E/SO 制造商:Microchip Technology Inc 功能描述:I/O Expander IC