hello, i wanted to interface 8255 with LPC2148 to increase my GPIO's but my my arm controller is working at 3.3v as the bus pads cannot tolerate higher voltage. now does 8255 Ic exist which works at 3.3v. if not please suggest some other solution.please help. thanks in advance, kan
also i dont want to use fpga and cpld as i am not very familiar with their programming.
wot about the 74oo's
Why don't you just pick another member of the LPC2xxx family that has your required number of GPIOs?!
See: http://www.nxp.com/#/ps/ps=[i=45994]|pp=[t=pfp,i=45994]
(you will have to copy & paste that URL manually into your browser - this forum can't cope with making it clickable)