Parallel to Serial

Parallel to Serial

Communication Protocols Application

Parallel to Serial convertors are commonly used to send data from one IC to another using one or two wires (Data and Clock). Internal or external clock can be used here and number of parallel bits is limited by number of GPAK I/Os and internal blocks available.



  • Any GreenPAK
  • No other components are needed

GreenPAK Diagram

Design Steps

  1. Configure the shift register as shown in Technique: Building a Shift Register
  2. Add and configure 3-bit LUTs for each DFF to operate as MUX using Technique: Configuring Standard Logic w/ LUT Macrocells.
  3. Configure Load/Shift function and connect internal blocks to inputs, output.


GreenPAK Designer files