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I used to program with 16f84a but the memory was not enough so I switched to 16f628a. In 84a, I used portb to drive a 4-bit LCD and porta as input.
How can I use the internal oscillator of 628a? How shall I initalize porta if i use RA6 and RA7 for xt oscillator, trisa=%00111111 or %11111111...
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