PCF8574中文手册广州周立功单片机发展有限公司Tel:(020)38730916387309173873097638730977Fax:38730925
系统配置
产生信息的器件称为‘发送器’,接收信息的器件称为‘接收器’。控制信息的器件称为‘主控器
而由主控器控制的器件称为‘被控器’(见图3)
SCL
data line
change
stable
of data
I data valid I allowed I
图11c总线上的位传送
SDA
SDA
SCL
P
START condit
Pcf8574-Gpio-Extender-Lib
关于库
Pcf8574-Gpio-Extender-Lib is for supporing multiple Pcf8574 boards together
in chain with less complexcity of the programming
mex we can connect 8 Pcf8574 together in chain which will give extra 64 pins for operations