>I would like to have a freq of at least 1Mhz. Am I dreaming or is
>this possible preferably without external components as there is no
>room the existing board design.

I think the fastest PWM is OSC/4, 50% duty cycle.  I use it to drive
charge pumps this way.  Set the period to 00000000 10
and set the duty cycle reg to zero:

;this is for a 16C76, other chips with CCP are similar.
;-------------------------------------------------------------------
;Capture / Compare / Pwm 1 CONtrol bits: Set up as constant freq out:
;CCP1CON<7:6> are not implemented, leave at 0. CCP1CON<7:6> =00
;Duty Cycle 1 Bit 1:Bit0 = 10                  CCP1CON<5:4> =10
;CCP1 Mode: PWM mode, CCP1M<3:0> = 11xx     CCP1CON<3:0> = 1100
;CCP1CON = 00101100b = H'2C'
CCP1PWM    EQU    H'2C'   ;to write to CCP1CON

;Init CCP1 to run at 50% duty cycle:
;TRIS RC2 to output
           BCF     TRISC,2             ;let CCP1 drive pin 13
;Timer 2 is running at Tosc / 4, prescaler 1:1 so LSB of PWM is osc.

           MOVLW   0
           MOVWF   PR2                 ;Timer 2 period register
           BCF     STATUS, RP0         ;bank 0 for control regs
           MOVLW   0
           MOVWF   CCPR1L              ;PWM period MSB = 00000000
;two Tosc high time
           MOVLW   CCP1PWM             ;PWM period = 00000000 10
           MOVWF   CCP1CON

------------
Barry King, KA1NLH
Engineering Manager
NRG Systems "Measuring the Wind's Energy"
Hinesburg, Vermont, USA
www.nrgsystems.com