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Timer 2 as a counter in PIC16F877

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mamech

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Hello

I know that only timer 0 and timer 1 in PIC16F877 can be used as counters as they have connection with external pins, but I found that in peripheral features in data sheet tells that timer 2 also is timer/counter. As far as I know this is not true. Is it written by mistake? or there is really something that I do not know that can make timer 2 work as a counter like timer 0 and 1??
 

I do not see a way. I checked the port pin descriptions where T2CKI is not mentioned in any of the ports. Timer 2 registers do not mention a clock source bit. Nor does the Timer 2 diagram mention a clock source other than Fosc/4.

It is possible it was copy paste or the are using counter in slightly confusing way.
 
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    mamech

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bluelasers said:
I do not see a way. I checked the port pin descriptions where T2CKI is not mentioned in any of the ports. Timer 2 registers do not mention a clock source bit. Nor does the Timer 2 diagram mention a clock source other than Fosc/4.

It is possible it was copy paste or the are using counter in slightly confusing way.
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this is the point, that is why I asked so I become sure that it is not an ignorance from me about usage of timer2
 

The datasheet on the Microchip web site certainly says that Timer2 is a 'timer' and not a 'timer/counter' as is does for Timer0 and Timer1.
Can you post the the reference where is says that Timer2 is a 'timer/counter'? It may be possible to tell the writers of the problem and get it corrected.
Susan
 
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Aussie Susan said:
The datasheet on the Microchip web site certainly says that Timer2 is a 'timer' and not a 'timer/counter' as is does for Timer0 and Timer1.
Can you post the the reference where is says that Timer2 is a 'timer/counter'? It may be possible to tell the writers of the problem and get it corrected.
Susan
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it is mentioned explicitly in peripheral features section , page 1 in datasheet.
 

I see that - thanks for the reference.
I suggest that you raise a documentation error ticket with Microchip to have that corrected.
Susan
 

Aussie Susan said:
I see that - thanks for the reference.
I suggest that you raise a documentation error ticket with Microchip to have that corrected.
Susan
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you are welcome, Actually it is not the first time that I find a mistake in this datasheet, but senior members here told me that this datasheet is too old currently (it is dated to year 2000 I think), so it is no more updated or revised, I think that microchip already knows but just ignores this.
 

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