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Single chip OSD - MAX7456 — Parallax Forums

Single chip OSD - MAX7456

J.A.B.J.A.B. Posts: 13
edited 2007-12-13 23:11 in Propeller 1
This looks like fun.

http://www.maxim-ic.com/view_press_release.cfm/release_id/1376
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5516

    * 256 User-Defined Characters or Pictographs in Integrated EEPROM
    * 12 x 18 Pixel Character Size
    * Blinking, Inverse, and Background Control Character Attributes
    * Selectable Brightness by Row
    * Displays Up to 16 Rows x 30 Characters
    * Sag Compensation On Video-Driver Output
    * LOS, Active-Low VSYNC, Active-Low HSYNC, and Clock Outputs
    * Internal Sync Generator
    * NTSC and PAL Compatible
    * SPI-Compatible Serial Interface
    * Delivered with Preprogrammed Character Set

Comments

  • BeanBean Posts: 8,129
    edited 2007-11-28 18:09
    J.A.B.
    · I have played around with this chip. (I have some self-made protoboards if anyone is interested).

    · It IS a cool chip, but the power requirements are terrible (100mA @ 5V), and it is quite expensive ($12-$17) each.

    Bean.

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  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2007-11-28 18:54
    For that price, you'd think it would include genlocking to the color burst so it could generate multicolor characters. But no: it's just grayscale.

    -Phil
  • BeanBean Posts: 8,129
    edited 2007-11-28 19:02
    Phil,
    · I hear rumors that they are working on a color version.

    · It would also be nice if it allowed bit-mapped graphics, but it is only text based (although to CAN redefine the character set).


    P.S. Phil, this is the chip that required the 15pF cap on the SClk line.

    Bean

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    ·
  • DroneDrone Posts: 433
    edited 2007-11-29 08:13
    Bean, I'd be interested in purchasing a couple-few of your breakout boards. How do we go about this?

    David
  • BeanBean Posts: 8,129
    edited 2007-11-29 12:46
    David,
    For an empty PCB + RCA jacks for $6.00+shipping. You'll need the chip and some 0805 parts.

    The chips I have are samples, so I don't feel it's ethical to "sell" them. Otherwise I'd offer I populated board too.

    If anyone wants to purchase your own from ExpressPCB I have attached the file.


    P.S. This should really be in the "SandBox" forum...

    Bean

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    Post Edited (Bean (Hitt Consulting)) : 11/29/2007 12:52:27 PM GMT
    pcb
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    Layout Sent.pcb
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  • DroneDrone Posts: 433
    edited 2007-11-30 11:57
    Hi Bean, Why not put the boards up for sale on your site then release a message in sandbox offering them up. I can pay by PayPal. Can you can send by regular mail overseas. These should fit in fairly small envelope even with the RCA jacks. I'm in Jakarta. What would the mail costs be for, say two or three boards to Jakarta?

    Regards,

    David
  • BeanBean Posts: 8,129
    edited 2007-12-13 02:48
    David,
    · Sorry I can't ship outside the US.
    ··I would suggest you order them from ExpressPCB yourself.

    Bean

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  • DroneDrone Posts: 433
    edited 2007-12-13 10:56
    OK Bean, I have a solution now; you can ship to my US address. It would be simplest for me to pay by PayPal.

    I sent you a message via the form on your Web page.

    David

    Post Edited (Drone) : 12/13/2007 11:07:06 AM GMT
  • BeanBean Posts: 8,129
    edited 2007-12-13 23:11
    I've had several inquires about these boards.
    I forgot to mention that I will include the 27MHz crystal too.
    Also, these are prototype PCBs (no solder mask).

    Bean.

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    Post Edited (Bean (Hitt Consulting)) : 12/14/2007 12:03:14 AM GMT
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