Thursday, 11 June 2020

Memory Architecture of 8051 microcontroller

✏️Memory  Architecture of 8051 microcontroller

📌Von  Neumann  Architecture 
📌Harvard  Architecture 

📌This classification organization of a is mainly program based on memory(ROM) data memory(RAM). 

✏️Von  Neumann  Architecture 
👉 It  is also referred  as Princeton  Architecture.

 👉It has a single memory storage tohold both program  Instructions and data instructions .... For example :common program and storage space. 

👉Instructions and data are accessed during same bus system. 

 ✏️Advantage : 
👉Simple design of microcontroller chip. 
👉Reduces  required hardware . 

✏️Disadvantage : 
👉Slower excution  of a program. 


✏️Harvard  Architecture


👉It has physically separate memory storage to hold program Instructions and data i.e separate program and data space.

👉Since it has separate buses to access program and data memory it is possible to access program memory and data memory simultaneously.

✏️Advantage:
👉Faster operation.

✏️Disadvantage:
👉It requires more hardware. 

NOTE:
👉8051 family architecture are based on Harvard Architecture.

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