LITERATURE REVIEW

JOURNAL 3

PIC 16F877

PIC 16F877 is one of the most advanced microcontroller from Microchip. This controller is widely used for experimental and modern applications because of its low price, wide range of applications, high quality, and ease of availability. It is ideal for applications such as machine control applications, measurement devices, study purpose, and so on. The PIC 16F877 features all the components which modern microcontrollers normally have.

General Features:

• High performance RISC CPU 
• Only 35 simple word instructions. 
• All single cycle instructions except for program branches which are two cycles. 
• Operating speed: clock input (200MHz), instruction cycle (200nS). 
• Up to 368×8bit of RAM (data memory), 256×8 of EEPROM (data memory), 8k×14 of flash memory. 
• Pin out compatible to PIC 16C74B, PIC 16C76, PIC 16C77. 
• Eight level deep hardware stack. 
• Interrupt capability (up to 14 sources). 
• Different types of addressing modes (direct, Indirect, relative addressing modes). 
• Power on Reset (POR). 
• Power-Up Timer (PWRT) and oscillator start-up timer. 
• Low power- high speed CMOS flash/EEPROM. 
• Fully static design. 
• Wide operating voltage range (2.0 – 5.56)volts. 
• High sink/source current (25mA). 
• Commercial, industrial and extended temperature ranges. 
• Low power consumption (<0.6mA typical @3v-4MHz, 20µA typical @3v-32MHz and <1 A typical standby).

Credit to : Prajapati Dipali, K., Raj Roshani, D., Patel Komal, C., & Hilali Marhaba, A. ( 2014). Automatic Gate Opening System For Vehicles With RFID or Password.