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A project log for 7 Segment Hex Module using PIC16F18446

Two digit (8 bit) sevent Hex segment display using a microcontroller

John LonerganJohn Lonergan 03/20/2021 at 22:160 Comments

I now have six PIC16F18446 chips programmed as dual digit seven segment display controllers.

Beautifully simple approach. There are 7 output pins driving the anodes of the LED's in parallel and the common cathode of each digit returns via a resistor to a dedicated output pin for each digit. 9 output pins in total.

8 input pins provide the pair of nybbles needed for the pair of digits.  

Each digit is turned on 50% of the time and with the microcontroller running with it's internal clock set to 1MHz the digit refresh rate is flicker free at 150Hz. 

I now have to wait for the PCB's to arive in a few days before I can have any more fun.

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