AT89S51 + 16x2 LCD

Pullups are must.. there is no problem in using P0. all ports are same, the only difference is.. that.. P0 need pullups. you can use any pin you want and consider it as a normal port.... Read Compelte post
Other Tags: pullups   p0   
Posted by ajay_bhargav on Sat Apr 21 2007, 01:23 PM

component trouble

hi ved,
if the resistor array in question is being used for pullups of the uC then the SIP used is internally connected as shown in figure. U can create ur own SIP using individual resistors of the same value in a similar configuration.





oops , looks like sunrom and i posted at the same time. ... Read Compelte post
Other Tags: pullups   resistors   resistor   sip   sunrom   
Posted by pdi33 on Sat Aug 09 2008, 07:30 PM

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