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MCP4922 Object — Parallax Forums

MCP4922 Object

ry.davidry.david Posts: 63
edited 2009-09-09 21:46 in Propeller 1
I·posted a new object in Obex for the MCP4922 (12-bit, 2-channel DAC) last weekend, and currently developing it further.· Eventually I want to convert it to assembly, and figured it would be best to keep all the information in one spot.

http://obex.parallax.com/objects/508/

Post Edited (ry.david) : 9/9/2009 9:49:50 PM GMT

Comments

  • ry.davidry.david Posts: 63
    edited 2009-09-09 21:46
    Today, I was able to get a scope on my setup to verify operation.· I had an issue with previous TI DAC's I was sampling with LDAC being tied to ground.· Everything looks fine, with no glitching on Vout.· Plots attached...

    Sorry about the odd channel order, but they are offset in the plot logically.
    Channel 3 - CS
    Channel 4 - CLK
    Channel 1 - SDI
    Channel 2 - VOUTA

    I am going to work on the assembly version now, and hopefully get DAC updates going quicker than ~675uS
    BMP
    BMP
    2V_To_5V.BMP
    301K
    BMP
    BMP
    POR_To_5V.BMP
    301K
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