Week 6

Research about PIC 16F72

The PICI6F72 is a low-power, high-performance CMOS 8-bit microcomputer with 2K bytes Flash programmable and erasable read only memory (PEROM).  PICI 6F72 is a powerful microcomputer, which provides a highly flexible and cost-effective solution to many embedded control application.

Advantages of Microcontrollers

• If a system is developed with a microprocessor, the designer has to go for external memory such as RAM, ROM or EPROM and peripherals and hence the size of the PCB will be large enough to hold all the required peripherals.
• But the microcontroller has got all these peripheral facilities on a single chip so development of a similar system with a microcontroller reduces PCB size and cost of the design.
• One of the major difference between a microcontroller and a microprocessor is that a controller often deals with bits, not bytes as in the real world application, for example switch contacts can only be open or close, indicators should be lit or dark and motors can be either turned on or off and so forth.

FEATURES OF PIC 16F72

High performance RISC CPU

Only 35 single word instructions to learn

All single cycle instructions except for program branches, which are two-cycle

Operating speed: DC-20 MHZ clock input

• DC-200 ns instruction cycle.
• Up to 2k x 14 words of program Memory,
• Up to 128 x 8 bytes of Data Memory (RAM)

Pinout compatible to PIC 16C72/72A and PIC 16F872.

Interrupt capability.

Eight- level deep hard ware stack.

Direct, Indirect and Relative Addressing modes.