Lpc2000

i m final year student of electronics engg

 i  m trying to interface 16x2 lcd display with lpc
2106 

io ports are connected as follows

D0-P0.21.........D7-P0.28
lcd enable-p0.29    RS-p0.30
R/W is grounded

i have sucessfully implimented clear disply command
but i m not able to write data

is it the problem of driving capcity or voltage levels

please give solution.......
 
 

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