Shop OBEX P1 Docs P2 Docs Learn Events
MT8880CE decoder crystal — Parallax Forums

MT8880CE decoder crystal

FlyingFishFingerFlyingFishFinger Posts: 461
edited 2005-10-12 23:24 in General Discussion
Hello!
I was looking to purchase the MT8880ce DTMF decoder/encoder, and it says Parallax sells the corresponding resonator crystal, but I can't find it anywhere. Also, what is the margin for frequency error on the crystal?
Thanks
Rafael

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2005-10-12 22:43
    Rafael,

    ·· Actually we don't have the Crystal.· It's a standard TV Colorburst Crystal which Radio Shack used to carry.· You could get it from any local electronics shop, Jameco or Digi-Key.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Tech Support
    csavage@parallax.com
  • FlyingFishFingerFlyingFishFinger Posts: 461
    edited 2005-10-12 23:14
    So what's the exact frequency required and what's the chip's tolerance as to accuracy?
    Rafael
  • Mike CookMike Cook Posts: 829
    edited 2005-10-12 23:17

    I built a project with the 8880 last year, the frequency of the crystal is: 3.579545mhz The following www.Digikey.com part number is what I used:

    300-6001-ND

    Here's what I posted a while back:

    http://forums.parallax.com/showthread.php?p=466523

    Mike

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    "OEM NMEA GPS Module" Now available on ebay for only $19.99

    Product web site: http://www.allsurplus.net/Axiom/

    Post Edited (Mike Cook) : 10/12/2005 11:55:45 PM GMT
  • FlyingFishFingerFlyingFishFinger Posts: 461
    edited 2005-10-12 23:24
    Hey Thanks I'll check that out
    Rafael
Sign In or Register to comment.