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CCS: LCD Interface with MSP430f427A

Other Parts Discussed in Thread: MSP430FG4250, MSP430F427A

Tool/software: Code Composer Studio

Hello!

I have successfully interface LCD with MSP430fg4250 and MSP430g6626. Currently I am working on MSP430f427A but I am unable to interface successfully. I can write the data in LCDMEM registers but the data is not being displayed on LCD. I am not sure but it seems to be a problem with controller's frequency. 

Also I want to know if the External Resistors shown in the LCD Block Diagram are mandatory to attach.Please help me out.

(This picture is taken from User Guide of MSP430x4xx Family)

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