Pic16f88

[peterdeco1]

I use this on my 'F88 program and it works without any problem.

OSCCON = $60 'set int osc to 4mhz
ANSEL = 0 'ANALOG INPUTS ALL DIGITAL
ADCON0 = 0 'AD MODULE OFF
CMCON = 7 'COMPARATORS OFF
@ DEVICE MCLR_OFF, INTRC_OSC, WDT_ON, LVP_OFF, BOD_OFF, PWRT_ON, PROTECT_ON

[jcleaver]

pic works fine with external osc

still having issues with internal pic manual seem to indicate it has 2 internal osc commands and three osc speed with 8 the defualt but does not list the
commands

1. LP Low-Power Crystal
2. XT Crystal/Resonator
3. HS High-Speed Crystal/Resonator
4. RC External Resistor/Capacitor with
FOSC/4 output on RA6
5. RCIO External Resistor/Capacitor with
I/O on RA6
6. INTIO1 Internal Oscillator with FOSC/4
output on RA6 and I/O on RA7
7. INTIO2 Internal Oscillator with I/O on RA6
and RA7
8. ECIO External Clock with I/O on RA6

4.5 Internal Oscillator Block
The PIC16F87/88 devices include an internal oscillator
block which generates two different clock signals;
either can be used as the system’s clock source. This
can eliminate the need for external oscillator circuits on
the OSC1 and/or OSC2 pins.
The main output (INTOSC) is an 8 MHz clock source
which can be used to directly drive the system clock. It
also drives the INTOSC postscaler which can provide a
range of six clock frequencies from 125 kHz to 4 MHz.
The other clock source is the internal RC oscillator
(INTRC) which provides a 31.25 kHz (32 µs nominal
period) output. The INTRC oscillator is enabled by
selecting the INTRC as the system clock source or
when any of the following are enabled:
• Power-up Timer
• Watchdog Timer
• Two-Speed Start-up
• Fail-Safe Clock Monitor

seems to have somethjing to do with the " fosc : " seting but have never seen this used


also i want to use the internal ad convertor

thanks for any help

[flotulopex]

Look at the OSCCON register (it's in your post!).

You'll be able to select the desired frequency.

[Pic_User]

See if this forum thread helps.
http://www.picbasic.co.uk/forum/showthread.php?p=15901

-Adam-