[Solved] 20 Points Design Simple Embedded System Pic16f84a Microcontroller Using 20mhz Resonator S Q37261043

(20 points) Design a simple embedded system with PIC16F84A microcontroller (using 20MHz resonator). The system can drive a LED light on for 26.8ms on and 13ms off repeatedly. You choose the port, which connect to the LED, draw the diagram to illustrate it. A watchdog timer should be enabled and have a time out period of 144 ms, but should not affect normal execution. A RB0 interrupt should be enabled to keep the program idle for 5 clock cycles (You can use 5 No operation” instructions). Sketch the circuit and write the complete assembly program. 1. 2. (10 points) Design a 4 by 4 keypad control system. Draw the connection between the port pins and the keypad pins. Explain the circuit and the program. Sketch the circuit and write the complete assembly program. Show transcribed image text (20 points) Design a simple embedded system with PIC16F84A microcontroller (using 20MHz resonator). The system can drive a LED light on for 26.8ms on and 13ms off repeatedly. You choose the port, which connect to the LED, draw the diagram to illustrate it. A watchdog timer should be enabled and have a time out period of 144 ms, but should not affect normal execution. A RB0 interrupt should be enabled to keep the program idle for 5 clock cycles (You can use 5 No operation” instructions). Sketch the circuit and write the complete assembly program. 1. 2. (10 points) Design a 4 by 4 keypad control system. Draw the connection between the port pins and the keypad pins. Explain the circuit and the program. Sketch the circuit and write the complete assembly program.

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Answer to (20 points) Design a simple embedded system with PIC16F84A microcontroller (using 20MHz resonator). The system can drive… . . .