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Hi
thanks Richard , my code as below


define osc 48
TRISB = $00 ' Set digit pins to output
mainloop:
toggle portB.5
pause 200
Goto mainloop ' Forever

Hi
Thanks , I tested PLLDIV = 4 before I posted .
if set PLLDIV = 4 , its output around 16.8ms , do you think any other setting was wrong ?

Best regards
Lee

Hi
my code is simple as follow:

define osc 48
TRISB = $00 ' Set digit pins to output
mainloop:
toggle portB.5
pause 200
Goto mainloop ' Forever

hello,
my complier is PBP3 gold 3.0.9.0
16Mhz crystal work with Pic18f4550
output timing means : if I toggle portB.4 200 , led should toggle every 200ms , but it output toggle only every 20ms ,...

Hi Rob:
if pic18f4550 use 16Mhz crystal , how to set 'Config1L to get precise output timing ?

'Config1L
' Full-speed USB Clock Source Selection: Clock Source from 96MHz PLL/2
' CPU...