Microcontroller architectures

[elecLear78]

Now a days we see lot of different microcontrollers from different suppliers. All these microcontrollers fall under some kind of architecture or they have their own design. Total how many architectures are available? I know of 8051, Arm.

 

[Nigel Goodwin]

Those aren't architectures, merely processor types.

Architectures are pretty well either Von Neumann or Harvard - with (as far as I know?) the first common Harvard ones been the MicroChip PIC.

 

[Jon Wilder]

Intel's 8048 was released around the same time as the first PIC in 1976.

As far as processor types, there are the 8051, ARM, PICmicro, Atmel AVR, Texas Instrument's MSP microcontroller, and I'm sure there are loads of others.

 

[Nigel Goodwin]

Intel's 8048 was released around the same time as the first PIC in 1976.

And was that a Harvard device?.

As far as processor types, there are the 8051, ARM, PICmicro, Atmel AVR, Texas Instrument's MSP microcontroller, and I'm sure there are loads of others.

A HUGE number more

 

[Jon Wilder]

It was a "modified Harvard" device. Meaning you could store data in program memory if you wanted.