Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

How to run 2 PICs from 1 clock (XTAL)?

Status
Not open for further replies.
foxabilo

foxabilo

Member level 3
Member level 3
Joined
Jul 16, 2007
Messages
67
Helped
13
Reputation
26
Reaction score
1
Trophy points
1,288
Location
Derby, England
www.bentleyrc.com
Activity points
1,886
I have 2 chips of lets say similar spec both wanting to run at the same clock speed.

The data sheets suggest xtal to OSC1 and OSC2 and then taking OSCO as an output and passing that to the OSCI, all well and good but does this need a modification to the OSC settings when programmed? I mean it must be possible to power 2 chips from one clock without messing about with firmware settings, any suggestions on how to run 2 chips from 1 clock (xtal)?

Cheers

Fox
 

2 PIC's one Tick

Ive encoutered this issue before. I think teh solution is you need to put a buffer on the clock for the second chip. The downsides are additional component and board space, which makes impratical than to have both chips have their own clocks.
 

    foxabilo

    foxabilo

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top