18F25J11 RTCC & remappable pin options

[EE12212]

hello
thanks bruce for this code!

i have a question for you.. if i want to change the frequency to 500Hz.. i do..

T2CON = %00000110 ' TIMER 2 ON/ PRESCALE 1:16
PR2 = 250 ' SETUP FOR 500HZ

but if i want to change to 100HZ i can't.. because prescale is in max (max=16) and PR2 is almost on max(max=255)..
how i could work with small frequencies?

best regards

Pedro Rodrigues

[rmteo]

but if i want to change to 100HZ i can't.. because prescale is in max (max=16) and PR2 is almost on max(max=255)..

how i could work with small frequencies?

You can't - this is a limitation of the CCP module which has only an 8-bit period register. This table is from the data sheet. With an 8MHz clock, the lowest frequency is 488Hz.

[Darrel Taylor]

but if i want to change to 100HZ i can't.. because prescale is in max (max=16) and PR2 is almost on max(max=255)..
how i could work with small frequencies?

Use the newer 16F1 enhanced core devices.

Timer2 has a 1:64 prescaler, so you can get PWM down to 62hz with a 4mhz OSC.

__________________
DT

[jonas2]

Hello

I want to use your example on a 18f26j50, but instead of displaying the date
I want to record data in an external eeprom.

Must convert it before writing to the eeprom or convert a reading
of the eeprom before sent to the PC? bcd format

and that the changes to make to pass a 16F628 to 18f26j50

Thank you for your help