参数资料
型号: MCP23S09T-E/SO
元件分类: 微控制器/微处理器
英文描述: 8 I/O, PIA-GENERAL PURPOSE, PDSO18
封装: 7.50 MM, LEAD FREE, PLASTIC, SOIC-18
文件页数: 6/50页
文件大小: 607K
代理商: MCP23S09T-E/SO
MCP23009/MCP23S09
DS22121B-page 14
2009 Microchip Technology Inc.
1.5
GPIO Port
The GPIO module is a general purpose 8-bit wide
bidirectional port.
The outputs are open-drain.
The GPIO module contains the data ports (GPIOn),
internal pull up resistors and the Output Latches
(OLATn).
The pull up resistors are individually configured and
can be enabled when the pin is configured as an input
or output.
Reading the GPIOn register reads the value on the
port. Reading the OLATn register only reads the
latches, not the actual value on the port.
Writing to the GPIOn register actually causes a write to
the latches (OLATn). Writing to the OLATn register
forces the associated output drivers to drive to the level
in OLATn. Pins configured as inputs turn off the
associated output driver and put it in high-impedance.
相关PDF资料
PDF描述
MCP23S09-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
MCP23S09T-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
MCP23009T-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
MCP23016-I/ML 16 I/O, PIA-GENERAL PURPOSE, PQCC28
MCP23016-I/SS 16 I/O, PIA-GENERAL PURPOSE, PDSO28
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