Hi,

I would like to use the PIC oscillator pin (OSC1/2) to drive an external
divider as described by the bad ASCII art below

eg

g=gnd, x=Xtal, inv=internal inverter for HS/XT mode. There is a resistor
(or two) missing, potentially.

                               | PIC internal
g----| |---------------|-----   osc1
                 |             |      |
                X            |    INV
                 |             |      |
g----| |---------------|-----   osc2
                      |        |
                      |        |_______________
                      |
                      |____| 74HC4040N clk-->QE|_________|Seiko 7600 CLK

This is similar to the diagram given in the PIC application notes on the
page for crysal operation/capactor selection etc

Basically, I will be using the crystal to give a nice baud rate multiple
but I need to divide this to drive the clock of a Seiko 7600A.

What I need to know is will I be able to drive this CMOS divider direct
from the PIC oscillator pins or do I need to do some buffering inbetween? I
would prefer to not have the xtal frequency affected by this being
loaded......

I had thought about making an external clock generator (using an unbuffered
inverter and the clock crystal config shown) but why bother when that
effectively is the same as what is on the PIC?

Any help/suggestions, please?

Best regards,

Dan

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