Which Microcontroller to Choose for VARIABLE DIGITAL NOTCH FILTER Lab Project

[dk99]

Which Microcontroller??

i am supposed to build a VARIABLE DIGITAL NOTCH FILTER using a microcontroller (either avr atmega-32 or 8051) for my lab project.
I don't know which one to chose please help me out.
And suggest any nice tutorials to learn about microcontrollers.

 

[berkeman]

i am supposed to build a VARIABLE DIGITAL NOTCH FILTER using a microcontroller (either avr atmega-32 or 8051) for my lab project.
I don't know which one to chose please help me out.
And suggest any nice tutorials to learn about microcontrollers.

I've used the 8051 for some DSP, but it's just an 8-bit processor, right? Seems like you would only use it for DSP if the DSP were relatively simple, and cost was a big factor.

For either one, the manufacturer will have tutorial resources on their website.

 

[Topher925]

I would use the Atmega-32. The 8051 is a legacy chip that is only kept around because old timers don't like to learn new technology.

 

[berkeman]

Who you calling old timer?!

 

[cjameshuff]

I would use the Atmega-32. The 8051 is a legacy chip that is only kept around because old timers don't like to learn new technology.

That's a bit unjust. There's a lot of legacy hardware and software, design tools, etc that's been thoroughly developed and tested that requires 8051 processors, and there's no shortage of sources for compatible processors. Migrating to a more modern processor would often be expensive and would involve not-insignificant risks. It's not just kept around because "old timers don't like to learn new technology".

That said, I'd go with the AVR. It's a simple and clean design, and if your goal isn't specifically to learn the 8051, it seems an odd choice. The AVR is also a bit unusual for this, though...like the 8051, it's an 8-bit microcontroller, not a DSP, and depending on your needs may be extremely lacking in processing power. In any case, check out http://www.avrfreaks.net/ for forums and other resources, and look at Atmel's application notes.

 

[dk99]

Ya.. Atmega looks like a superior choice because it's got an inbuilt ADC and all.

please suggest any tutorials for learning about microcontrollers

 

[berkeman]

Ya.. Atmega looks like a superior choice because it's got an inbuilt ADC and all.

please suggest any tutorials for learning about microcontrollers

the manufacturer will have tutorial resources on their website.

4-char

 

[cjameshuff]

please suggest any tutorials for learning about microcontrollers

Like I said, look at Atmel's application notes: http://www.atmel.com/dyn/products/app_notes.asp?family_id=607

AVR335, AVR222, and AVR223 in particular look like they may be of interest.