109 Configurable SR

109 : 0b 001 101 101 : Configurable SR

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  • Author: Greg Steiert
  • Description: Configurable gates driving SR and D flip-flops
  • GitHub repository
  • Wokwi project
  • Extra docs
  • Clock: 0 Hz
  • External hardware: none

picture

How it works

Two configurable gates enable a variety of complex flip-flop functions

How to test

When SEL and INV are low, the 0 inputs directly drive the flip-flops. A-0 can be connected to the clock for use with the D flip-flop.

IO

# Input Output
0 A-0 MUX-A
1 A-1 XOR-A
2 A-SEL SR-Q
3 A-INV D-Q
4 B-0 MUX-B
5 B-1 XOR-B
6 B-SEL SR-Q#
7 B-INV D-Q#