Sunday, May 31, 2020

Interfacing the 74HC595 shift registers with PIC16F887 digital pins

The 74HC595 shift registers is a serial in parallel out shift register type. We just use three digital pins to send the data the register. Using these three wires could drive multiple of this IC.
For more detail about 74HC595, please see this post.

In this example I use two registers to show a timing of 60 seconds.

Interface the 74HC595 shift registers with PIC16F887 digital pins
Schematic diagram

Source code is here:

Interface the 74HC595 shift registers with PIC16F887 digital pins
A screen shot while the simulation shows 17 seconds count.


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Interfacing ATMega32 to 74HC595 shift register
ATMega16 ATMega32 Experiment Board PCB from PCBWay



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