Harvard Architecture

Havard architecture microchip is wildly using in industrial control field. it has fast alog speed than tranditional architacture.

you would read instruction carefully, in otder that you can identify their difference and positon.

how many bits are you using? what type?

thanks for your suggestion,

i want to design a 8bit RISC microcontroller .

You can use Atmel's AVR microcontrollers with RISC architecture that is what you need

Go to Atmel's site where you can find what ever you like to know about and how to do your project.

Hellow!

The HARVARD ARCHITECTURE – has two BUS Systems:

• The Program Bus System: Is used exclusively to transport instruction codes from the program memory to the CPU during the fetch cycle.

• The Data Bus System: Is used exclusively to transport data from/to the CPU, to/from the memory and peripherals.

Each Bus System has an address bus, a data bus and a control bus.

Note: One word of caution about a confusing terminology is in order: The Program Bus System and the Data Bus System are complete bus systems composed of an address bus, a data bus and a control bus. Very often the Program Bus System and Data Bus System are simply called Program Bus and Data Bus. When discussing a "data bus", it is therefore important to put it in context and determine if it applies to a data bus system comprising an address bus, a data bus and a control bus, or if it is simply a data bus.

So, for Harvard architecture you need to find a procesor (CPU) abble to handle one bus for program and one bus for data memory and periferials.

Saludos!

Alhuey23