CHAPTER 3 A Simple PIC Application Chapter Outline 3.1. Hardware Design 46 3.1.1. PIC 16F84A Pin-Out 46 3.1.2. BIN Hardware Block Diagram 47 3.1.3. BIN Circuit Operation 48 3.2. Program Execution 3.2.1. 3.2.2. 3.2.3. 3.2.4. 3.2.5. 3.2.6. 3.2.7. 50 Program Memory 51 Program Counter 51 Working Register 51 Port B Data Register 51 Port A Data Register 52 General Purpose Register 52 Bank 1 Registers 52 3.3. Program BIN1 52 55 3.3.1. Program Analysis 52 3.3.2. Program Execution 54 3.4. Assembly Language