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[SOLVED] Can I configure the TMOD to be used both as a timer and a counter at the same time?

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09BEC036

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can i configure the TMOD to be used both as a timer and a counter at the same time, say TMOD=0x25?
 

Re: timers/counters in 8051

09BEC036 said:
can i configure the TMOD to be used both as a timer and a counter at the same time, say TMOD=0x25?
Click to expand...

Yes, Since the lower 4 bits are for timer/counter 0. and higher 4 bits for timer/counter1.

To use as Timer0: Clear C/T bit of TMOD (2nd bit for timer/counter0).[3rd bit from right]

To use as Timer1: Clear C/T bit of TMOD (6th bit for timer/counter1).[7th bit from right]

To use as counter0: you have to SET 0 bit of TCON [righmost bit] and 2nd bit of TMOD[3rd bit from right].

To use as counter1: SET 2nd bit [3rd from right] of TCON and 6th bit [7th bit from right] of TMOD.
 
Re: timers/counters in 8051

Gagan23 said:
Yes, Since the lower 4 bits are for timer/counter 0. and higher 4 bits for timer/counter1.

To use as Timer0: Clear C/T bit of TMOD (2nd bit for timer/counter0).[3rd bit from right]

To use as Timer1: Clear C/T bit of TMOD (6th bit for timer/counter1).[7th bit from right]

To use as counter0: you have to SET 0 bit of TCON [righmost bit] and 2nd bit of TMOD[3rd bit from right].

To use as counter1: SET 2nd bit [3rd from right] of TCON and 6th bit [7th bit from right] of TMOD.
Click to expand...

thx :smile:
 

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