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Help req wih shift register | Cypress Semiconductor

Help req wih shift register

Summary: 3 Replies, Latest post by Gautam Das on 14 Nov 2011 02:25 AM PST
Verified Answers: 0
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antimatter's picture
6 posts

 I was trying to use the shift register of PSOC creator 1.0 and I wanted to know what is the easiest possible way of knowing by hardware when the parallel value loaded in the shift register has been shifted out completely.

Thank You

user_1377889's picture
9292 posts

Hi antimatter,

I would suggest to count the number of bits with a counter :reset with Load shift, count up with shift-clock,compare with bit-count.

Have fun



user_460349's picture
1362 posts

You can use SPI if you only need to shift data out with a shift clock.

dasg's picture
Cypress Employee
730 posts

Hi antimatter,


You can use counter component to keep track of the number of clocks that has elapsed (which is equal to the number of bits shifted). Interrupt on terminal count can be used as a trigger to load a new value into the Shift Register.



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