Interface an LED to PA1. Implement the interface in negative logic. The desired operating point is 1.2V 2mA. The V_{_OH} is 3.0V and V_{_OL}= 0.1 V. Minimize cost of the interface.

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To interface an LED to PA1 in negative logic with the desired operating point of 12V and 2mA youll need to use a transistor to control the LED current ... View the full answer