The LED7SEG User Module is capable of multiplexing up to eight 7-segment displays. This user module is compatible with common cathode, common anode, or any drive polarity. This allows a wide range of flexibility with various displays. Digits and segments may be driven directly by PSoC pins without the use of transistors or drivers as long as the current sinking and sourcing limits of the PSoC pins are not exceeded.
The following diagram shows how common anode and cathode 7-segment displays are configured:
7-Segment Display Configurations
The project using the LED7SEG User Module that manipulates pins on a port shared with an instance of the LED7SEG must avoid direct PRTxDR writes. Use Shadow Registers for such manipulation to prevent incorrect LED7SEG operation.
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