Thanks for catching my typo! I wasn't aware of the 16c84. Have never used
it. Most of my stuff is now 18F or 24H unless it's a very simple cost
sensitive device, when I go back to 16F.

Thanks!

Harold


> On Fri, 2007-02-23 at 13:31 -0800, Harold Hallikainen wrote:
>> >
>> > ok, i am doing a new project, u guessed it...a clock.
>> >
>> > now, i have read some guides about this on the www, but the give
>> different
>> > info. Is it true that the frequency of the oscillator used is divided
>> by
>> > 4,
>> > and instructions are executed at this new frequency? im using a
>> pic16f84a.
>> >
>> > also, i wanted to know, what is different between 16f and 16c etc....?
>> >
>> > ty.
>>
>> Yes, Fosc is divided by 4. So, if you have a 4MHz oscillator, the PIC
>> runs
>> at 1,000 instructions per second (some instructions take twice as long,
>> like those that modify PC).
>
> Oops, I think you mean 1,000,000 instructions per second.
>
>> 16F uses flash memory. It can be erased electrically. 16C uses eprom. If
>> in a ceramic case, it can be erased with UV. If in a plastic case, it
>> cannot be erased and is considered "one time programmable."
>
> True, except for the 16c84, which was EEPROM based (basically same
> features as the 16f84).
>
> TTYL
>
>
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