参数资料
型号: MCP23009-E/MG
元件分类: 微控制器/微处理器
英文描述: 8 I/O, PIA-GENERAL PURPOSE, PQCC16
封装: 3 X 3 MM, 0.90 MM HEIGHT, PLASTIC, QFN-16
文件页数: 8/50页
文件大小: 607K
代理商: MCP23009-E/MG
MCP23009/MCP23S09
DS22121B-page 16
2009 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 1-1:
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
相关PDF资料
PDF描述
MCP23009-E/SS 8 I/O, PIA-GENERAL PURPOSE, PDSO20
MCP23S09T-E/SS 8 I/O, PIA-GENERAL PURPOSE, PDSO20
MCP23S09T-E/SO 8 I/O, PIA-GENERAL PURPOSE, PDSO18
MCP23S09-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
MCP23S09T-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
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