Alex Torres wrote:
> 
> >Hello all,
> >
> >1.I have 2 pieces of 1Mbyte serial flash memory with built in SRAM and
> >SPI Interface
> 
> What chip ?
> 
> >and I would like to connect it to the PIC16F84. Since the PIC16F84 has
> >no built in SPI Interface, I was wondering if it possible to write a
> >software driver for it, similar to the available IIC routine.
> 
> See 16x84+ 93Cxx applications, I hope its ease to adapt them to your chip.
> 
> >Has anybody done something like this?
> >I would be happy for any suggestions or code examples on this issue.
> >
> >2.Can somebody recommend a good 16bit ad converter with SPI Interface
> >and 3V operating voltage?
> >The sampling rate doesn4t matter since it is a low frequency
> >application.
> 
> You really need 16bit ? I use AD7896, it is only 12bit but very goooooood !
> Look at AD7715, I have very short description, but it says that this chip is
> +3/+5v, 80uA, 16-pin (I hope 16bit ADC in 16pin package is not parallel :-).
> Its faxcode=1813 and you may download the full pdf-file from www.analog.com
> 
> >
> >Best Regards,
> >Thomas

Hi Alex,

1. It«s a serial flash eeprom with SPI from nexcom
   ( http://www.nexcomtech.com )
   The memory size available ranges from 1Mbit to 16Mbit.
2. I have never written any code for the SPI interface.
   Could you send me a example code for your mentioned AD7896 ?
   I will try to get the data sheet for the AD7715 and I hope
   I can reuse the code from the AD7896 with little modification.
3. I might use the PIC14000 with a built in 16bit ADC.
   I am sure that the subroutine for the SPI can be used also on this
PIC.
   Do you know this PIC14000 ? Can you recommend it ?

Best Regards,
Thomas