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SPI Interface on CFAG14432E-TFH-TT

daryll

New member
I'm reading the datasheet, and it indicates that setting PSB=0 should put the ST7920 in SPI mode. The problem is that I don't see anything telling me how to do that.

What are the pins for SPI once the change is made?

Thanks
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daryll

New member
Brought out to the PCB?

OK, that document tells me it's pin23 on the controller, but the question is where you exposed it in your PCB. I don't have direct access to the pins on the controller.
 

CF Support2

Administrator
To enable SPI mode on the CFAG14432E series, you need to move the zero Ohm jumper in JF1 from right to left (3 position jumper). Your resulting pin out will be:

VSS ==> VSS
VDD ==> VDD
VO ==> VO
RS ==> CS
R/W ==> SID
E ==> SLK
DB0~DB7 ==> No Connect
 
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