Driving LED martix with K70

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Driving LED martix with K70

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rowans-b
Contributor I

Hi,

I have a 16 by 96 red/green LEd display panel, that I need to drive from a K70 processor (actually a Kinetis K-70-SOM board). I'm hoping some of you can suggest the best way to do this?
The display is driven by two 96-bit shift registers with latches (one for red, one for green), so I need to shift 96 bits into each register, latch the data into the drivers, and then repeat for each column on the display. Some questions:
- Can I use the K70's SPI interface for doing this? The display interface is not explicitly an SPI interface, but it is very similar.
- Can I drive two data bits with the same clock using the SPI interface?
- How fast can the K70 load the serial shift register?

Thanks for your help - Rowan

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Hui_Ma
NXP TechSupport
NXP TechSupport

Hi,

I think you could use K70 DSPI module works with LED drive IC.

If customer want to use two data output line, I would recommend customer to use two DSPI modules.

The Max. DSPI baud rate could up to 30Mbps.

Wish it helps.


Have a great day,
Ma Hui

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