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PICList Thread
'SPI for 16C84'
1998\05\07@100046 by Thomas Fleckenstein

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Hello all,

1.I have 2 pieces of 1Mbyte serial flash memory with built in SRAM and
SPI Interface
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.

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 doesn«t matter since it is a low frequency
application.

Best Regards,
Thomas

1998\05\07@100046 by Thomas Fleckenstein

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face
Hello all,

1.I have 2 pieces of 1Mbyte serial flash memory with built in SRAM and
SPI Interface
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.

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 doesn«t matter since it is a low frequency
application.

Best Regards,
Thomas

1998\05\08@034243 by Wolfgang Willenbrink

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Hy Thomas,

I can«t resolve your problem but please be so kind, and tell me about the
types of
the RAMs you use for your project!

Thanx and best regards

Wolfgang


Thomas Fleckenstein wrote:

{Quote hidden}

1998\05\09@113644 by Alex Torres

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>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 http://www.analog.com



>
>Best Regards,
>Thomas

1998\05\11@044558 by Thomas Fleckenstein

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Alex Torres wrote:
{Quote hidden}

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

1998\05\11@044558 by Thomas Fleckenstein

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face
Alex Torres wrote:
{Quote hidden}

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

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