Architecture of 8085 Microprocessor

The 8085  microprocessor  is an 8 bit  general purpose microprocessor. 8 bit  processor  means it can  read write  and process 8 bit  data  at a time. The 8085 microprocessor chip  has 40 pins requires +5 V power  supply and can  operate with a 3MHz clock frequency.

Although  the internal  architecture  of 8085  microprocessor is very  complicated the programme is  concern  only with  a small part of  it which can be referred in the program or which  is important to know to the  write a program. The block  diagram showing  this part  is called  the programming model  of the microprocessor. To   understand the basic  and important  functions  of 8085  microprocessor we will  concentrate only on the  programming model  here.  The detail architecture of 8085  microprocessor  will be  discussed later.