In Application Programming (IAP) Performance

Hi,

I am currently looking into the IAP features of the Atmel AT89C51CC03,
and having difficulty understanding (or finding information) on the
performance.

As far as I can tell, the user application sets up the data to be
written to flash, along with the page and byte address, and then calls
the AIP API which resides in a seperate flash array (FM1). This API
actually performs the flash write and then returns to the user
application. The user code must disable interrupts prior to the API
call.

I cannot find out how long the API function takes i.e. How long will my
application be stalled ?

Can anybody point me to this information, or provide a simple
calculation of the form

 Total Time   = (Number of Bytes * TimePerByte us) + FixedOverhead us

Thanks,

Steven

moogyd@yahoo.co.uk wrote:
> Hi,
>
> I am currently looking into the IAP features of the Atmel AT89C51CC03,
> and having difficulty understanding (or finding information) on the
> performance.
>
> As far as I can tell, the user application sets up the data to be
> written to flash, along with the page and byte address, and then calls
> the AIP API which resides in a seperate flash array (FM1). This API
> actually performs the flash write and then returns to the user
> application. The user code must disable interrupts prior to the API
> call.
>
> I cannot find out how long the API function takes i.e. How long will my
> application be stalled ?
>
> Can anybody point me to this information, or provide a simple
> calculation of the form
>
>  Total Time   = (Number of Bytes * TimePerByte us) + FixedOverhead us
>
> Thanks,
>
> Steven

Hi,

I was hoping for a faster response ;-(

Can anyone suggest an alternative (or better) forum for 8051 based
discussions ?

Thanks,

Steven

I guess the Flash Programming User Manual or the datasheet of the
microcontroller
will have this information. You can try in their site.


rgds
venky


moogyd@yahoo.co.uk wrote:
> moogyd@yahoo.co.uk wrote:
> > Hi,
> >
> > I am currently looking into the IAP features of the Atmel AT89C51CC03,
> > and having difficulty understanding (or finding information) on the
> > performance.
> >
> > As far as I can tell, the user application sets up the data to be
> > written to flash, along with the page and byte address, and then calls
> > the AIP API which resides in a seperate flash array (FM1). This API
> > actually performs the flash write and then returns to the user
> > application. The user code must disable interrupts prior to the API
> > call.
> >
> > I cannot find out how long the API function takes i.e. How long will my
> > application be stalled ?
> >
> > Can anybody point me to this information, or provide a simple
> > calculation of the form
> >
> >  Total Time   = (Number of Bytes * TimePerByte us) + FixedOverhead us
> >
> > Thanks,
> >
> > Steven
>
> Hi,
>
> I was hoping for a faster response ;-(
>
> Can anyone suggest an alternative (or better) forum for 8051 based
> discussions ?
> 
> Thanks,
> 
> Steven