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25LC1024 Reading
Posted by: ChrisCam ()
Date: August 27, 2015 03:06PM

Hi everyone,

I am trying to read a 25LC1024 EEPROM content with PonyProg, but this device isn't in the device list.
So I tried to choose 25256...

I made the SPI EEPROM Adapter that we can find in PonyProg WebSite and the base board.
I conect a DB9 on my serial PC port.
While reading, whith scope, i can see a CLK, SI and SO signal but the software displays only FFFF...

Can someone help me?

i am using Windows 7 Professional SP1
PonyProg117h because i have no signal with PonyProg 2000!!

Best regards



Edited 1 time(s). Last edit at 08/27/2015 03:13PM by ChrisCam.

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Re: 25LC1024 Reading
Posted by: sonix ()
Date: August 28, 2015 09:02PM

Hi Chris,

I have read datasheet for SPI eeprom 25LC1024 (size 1 Mbit = 128 KByte) and there is 24-bit addressing needed. PonyProg2000 uses 16-bit addressing for big spi eeproms (size 8-64 Kbits). Because of incorrect addressing in read sequence you will get FF's in PonyProg's "buffer" window.

I have shortly looked into PonyProg source code and theoretically it could be added into it. Unfortunately I do not have eeprom 25LC1024, therefore it will be much harder for me to implement / test it in praxis. I will try to prepare it within one week and I will let you know.

Best regards
sonix


ChrisCam Wrote:
-------------------------------------------------------
> Hi everyone,
>
> I am trying to read a 25LC1024 EEPROM content with
> PonyProg, but this device isn't in the device
> list.
> So I tried to choose 25256...
>
> I made the SPI EEPROM Adapter that we can find in
> PonyProg WebSite and the base board.
> I conect a DB9 on my serial PC port.
> While reading, whith scope, i can see a CLK, SI
> and SO signal but the software displays only
> FFFF...
>
> Can someone help me?
>
> i am using Windows 7 Professional SP1
> PonyProg117h because i have no signal with
> PonyProg 2000!!
>
> Best regards

Options: ReplyQuote
Re: 25LC1024 Reading
Posted by: sonix ()
Date: August 30, 2015 08:27PM

Hi Chris,

by analysis of the source code of PonyProg2000 I have found that I am not able to add eeprom 25LC1024 because of 24-bit addressing. PonyProg uses variable of integer type for addressing spi eeproms, therefore maximal size is 32768 Bytes. But 25LC1024 has 131072 Bytes. So firstly I have an idea that I can change variable type by another one with "larger" size. But the further analysis showed me that the majority of source code for eeproms uses integer type variables for addressing and also as a return values for further processing of size by another program functions. These functions are designed for processing integer variable types as well.

Unfortunately I do not have enough experiences for such a big changes in so many source files and I do not know all internal program dependencies as well. Maybe author of PonyProg200 Mr.Lanconelli could help.

Best regards
sonix


sonix Wrote:
-------------------------------------------------------
> Hi Chris,
>
> I have read datasheet for SPI eeprom 25LC1024
> (size 1 Mbit = 128 KByte) and there is 24-bit
> addressing needed. PonyProg2000 uses 16-bit
> addressing for big spi eeproms (size 8-64 Kbits).
> Because of incorrect addressing in read sequence
> you will get FF's in PonyProg's "buffer" window.
>
> I have shortly looked into PonyProg source code
> and theoretically it could be added into it.
> Unfortunately I do not have eeprom 25LC1024,
> therefore it will be much harder for me to
> implement / test it in praxis. I will try to
> prepare it within one week and I will let you
> know.
>
> Best regards
> sonix
>
>
> ChrisCam Wrote:
> --------------------------------------------------
> -----
> > Hi everyone,
> >
> > I am trying to read a 25LC1024 EEPROM content
> with
> > PonyProg, but this device isn't in the device
> > list.
> > So I tried to choose 25256...
> >
> > I made the SPI EEPROM Adapter that we can find
> in
> > PonyProg WebSite and the base board.
> > I conect a DB9 on my serial PC port.
> > While reading, whith scope, i can see a CLK, SI
> > and SO signal but the software displays only
> > FFFF...
> >
> > Can someone help me?
> >
> > i am using Windows 7 Professional SP1
> > PonyProg117h because i have no signal with
> > PonyProg 2000!!
> >
> > Best regards

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Re: 25LC1024 Reading
Posted by: cathytreat ()
Date: October 12, 2015 12:18PM

I also want to read the 25LC1024.What is that ?Please share more information about the 25LC1024.This type of forum will give new and different information about the 25LC1024.I am doing my research work with the help of best essay writing service (http://www.essayguardian.com/).It is not completed.

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Re: 25LC1024 Reading
Posted by: sonix ()
Date: October 13, 2015 07:16PM

Hi cathytreat,
can you please specify which new and different information about 25LC1024 is present on this forum?

I have attached datasheet of 25LC1024 (1 Mbit SPI Bus Serial EEPROM). There you can find all information about this eeprom type.

Best regards
sonix


cathytreat Wrote:
-------------------------------------------------------
> I also want to read the 25LC1024.What is that
> ?Please share more information about the
> 25LC1024.This type of forum will give new and
> different information about the 25LC1024.I am
> doing my research work with the help of best essay
> writing service (http://www.essayguardian.com/).It
> is not completed.

Attachments: 25LC1024.pdf (577.6 KB)  
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