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A MICROCONTROLLER WITH FPU!

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memarian

memarian

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microcontroller with fpu

Dear Friends,

Does anyone know a 8-bit or 16-bit Microcontroller with FPU?

(with Floating Point Unit.),I need Floating Point Division & Multiply.Keil can

simulate it on microcontroller but a division takes about 1100 machine cycle &

a multiply takes about 300 machine cycle.I can't use DSP's Like TMS.

Thanks.
 

Memarian,

I doubt there is anyu 8- or 16-bit micro with FPU but at least I know about a low cost 32-bit micro with FPU.
It is called LPC3180 and information can be found here:
**broken link removed**
For a price indication you can go to Digikey
http://www.digikey.com/
and type LPC3180 into the search.

Hope this helps, Robert
 

Dear,

LPC3180 is a ARM9 Based uController. Usually ARM Based uControllers have

FPU.I don't want to use ARM based uControllers because this makes my circuit

much more complex.

Thanks for your help.

Good Luck.
 

Hi memarian,

I'm not sure if it is suitable for your project, but have a look at this FPU:
https://www.micromegacorp.com/picaxe.html

This chip will do the math whilst your microcontroller doing other stuff, and interface protocol is I2C.

Cheers,
 
Hola namqn,

I recall a FPU, probably that one, which had a fixed delay for reading its data of about 200 usec? Is it this one?

Good to keep in mind, before buying.
 

memarian said:
Dear,

LPC3180 is a ARM9 Based uController. Usually ARM Based uControllers have

FPU.I don't want to use ARM based uControllers because this makes my circuit

much more complex.

..snip.. /quote]
Well, I do not know about any ARM7 that would have an FPU and not about any other ARM9 having a FPU. Don't know where you got your information about ARM "usually" having floating point.

If an ARM makes your circuit too complex you really should think about converting to integer instead of using floating point.

Just my 2 cents, Robert
Click to expand...
 

atferrari said:
Hola namqn,

I recall a FPU, probably that one, which had a fixed delay for reading its data of about 200 usec? Is it this one?

Good to keep in mind, before buying.
Click to expand...
Hi atferrari,

Have not used it myself. I just accidentally came across this chip a couple of months ago. According to the datasheet, the chip has maximum 90 usec read delay in normal mode, 180 usec read delay in debug-enabled mode (with I2C 400 kHz interface). The chip can also use SPI for interfacing, at a maximum SCLK of 4 MHz.

Cheers,
 

Dear Friends,

I finally found a 8051 Compatible Microcontroller with internal FPU!!

It has a single cycle core operating up to 200MHz! Floating Point Calculation

up to 100 MFLOPS! it's from TEZZARON SEMICONDUCTOR.

see this link:

https://www.tezzaron.com/OtherICs/Super_8051.htm

Good Luck!
 
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