PIC microcontroller with analog comparator ?

[loup-garou]

everybody hi,

I need a reference of a PIC microcontroller (at least having 16 I/O) with a built-in analog comparator, any idea ?

I alredy have a 16F628A, but the number of it's I/O isn't sufficient (13 I/O while I need 16 I/O)

thanks in advance.


by the way, I read the comparator section of the 16F628 datasheet, but I did not find if we have the possibility to disable the output pin of the comparator CMP1 or CMP2 (depending on which one we are using) for using it as an independent I/O and in the same time we can still use the comparator (its output is a value in the register that we can just read),.....what do you think ?

 

[blueroomelectronics]

16F876A

Microchip has a tool MAPS on their site that will list suitable PICs.
Main

 

[mississippi]

the new pic16F882 or the older pic16F673a
These chips have both analog comperators and analog to digital converters inside.

 

[loup-garou]

hi,

thank you for your answers .

any idea about my second question ?

thanks

 

[blueroomelectronics]

Only one mode connects the comparators output pins externally.

Two Common Reference Comparators with Outputs
CM2:CM0 = 110

 

[mississippi]

CMCON register.
See page 63 and 64 of the datasheet.
And to keep the output of the com. inside an use the pins for something else CM2:CM0 = 100

 

[loup-garou]

hi guys,

thank you again,

I have chosen this configuration CM2:CM0 = 101 because I just need one comparator without its external output.

 

[mississippi]

Good luck with your program.
Regards,
M