VAG-COM/VCDS EVERYTHING

**KenshinPT** · 13th January, 2011, 12:22 PM

Originally Posted by tomasfilip

make high resolution picture of this eeprom, please

I am at the office right now.

I'll post a high resolutionphoto in the end of the afternoon.

But believe me... I already ordered those EEPROM for spare parts and I rechecked my invoice and it's a Microchip 93C56A. I usually don't do mistakes when reading chips labels
http://ww1.microchip.com/downloads/e...doc/21794b.pdf

Another point is if the 93C56A on my cable is not a EEPROM from Microchip and that reference (93C56A) is from other manufacturer - meaning a 16 bit EEPROM. But this is a very remote option.

**g_ural** · 13th January, 2011, 12:56 PM

Originally Posted by aminebot

No , it work only with VCDS lite 1.0 , and it does not work correctly with some computers.

i will make a loader for 1.1 version when i got free time.

Hi, have you done this loader?
Regards, Adam.

**tomasfilip** · 13th January, 2011, 02:27 PM

Originally Posted by KenshinPT

I am at the office right now.

I'll post a high resolutionphoto in the end of the afternoon.

But believe me... I already ordered those EEPROM for spare parts and I rechecked my invoice and it's a Microchip 93C56A. I usually don't do mistakes when reading chips labels
http://ww1.microchip.com/downloads/e...doc/21794b.pdf

Another point is if the 93C56A on my cable is not a EEPROM from Microchip and that reference (93C56A) is from other manufacturer - meaning a 16 bit EEPROM. But this is a very remote option.

ok, I believe you, let's see bottom text.. and because on the market is big mess about 93Cx6 memories..
let's example..

STMicro
ST93C46 has ORG pin
Microchip
93LC46B - 16bit
93LC46A - 8bit
Atmel (big, big mess)
AT93C46 - org pin
AT93C46A - 16bit (!)
AT93C46B - 16 bit
AT93C56A - org pin

what I should be interesting how 8bit 2Kbits memory works in 16bit access - maybe should works, just you need twice more space than you want, but for 56(8bits) is OK, there is 2x more than for 46(16bits).. It's hard image how FTDI access different memory (46/56/66)

I suggest you anyway to follow FTDI recommendation and if you have change to solder 16bit version, do it ..

**Samaelson** · 13th January, 2011, 02:39 PM

Hi again,

You can use this one, too.

M93S46-WMN6P STMicroelectronics EEPROM

If no more 93CS46 are in stock anywhere!

**KenshinPT** · 13th January, 2011, 03:35 PM

Originally Posted by Samaelson

Hi again,

You can use this one, too.

M93S46-WMN6P STMicroelectronics EEPROM

If no more 93CS46 are in stock anywhere!

I ordered a few M93S86 (ST). They have ORG pin, so it can be used a 8 or 16bit.

But the question here is:

- Later you pointed for a 16bit only EEPROM saying that it will work.
- I have a 8bit only EEPROM working good.
- Tomasfilip used a 16 bit only EEPROM and he can't get it working.
- FTDI says that FT232BL uses only 16bit

What a big mess in here...

**KenshinPT** · 13th January, 2011, 03:38 PM

Other thing.

I have an old fashion VCDS cable with a FTDI232BL and a ATMEGA162V-8AU (8MHz).

I am going to buy a spare part but at farnell the ATMEGA162V-8AU as been discontinued.

They only have the 16MHz version. I also so that version in other clone cables.

But, can I use a ATMEGA162V-16AU for direct replacement of a ATMEGA162V-8AU withou any hardware change (crystal for example)?

**tr3ce13** · 13th January, 2011, 04:04 PM

.................................

**Zibi70** · 13th January, 2011, 04:07 PM

Originally Posted by KenshinPT

Other thing.

I have an old fashion VCDS cable with a FTDI232BL and a ATMEGA162V-8AU (8MHz).

I am going to buy a spare part but at farnell the ATMEGA162V-8AU as been discontinued.

They only have the 16MHz version. I also so that version in other clone cables.

But, can I use a ATMEGA162V-16AU for direct replacement of a ATMEGA162V-8AU withou any hardware change (crystal for example)?

Yes you can
It's only max working ferequrency.

Regards
Darek

**tr3ce13** · 13th January, 2011, 04:10 PM

..................................

**doni1** · 13th January, 2011, 05:34 PM

hello, has anybody 908.2 romanian dumps?

**tomasfilip** · 13th January, 2011, 06:53 PM

Originally Posted by KenshinPT

I ordered a few M93S86 (ST). They have ORG pin, so it can be used a 8 or 16bit.

But the question here is:

- Later you pointed for a 16bit only EEPROM saying that it will work.
- I have a 8bit only EEPROM working good.
- Tomasfilip used a 16 bit only EEPROM and he can't get it working.
- FTDI says that FT232BL uses only 16bit

What a big mess in here...

I have as original AT93C46 is 16bit and is working well, but 93LC86-I/SM isn't working because I think clock issue (is less from FTDI than chip is needed)

in atachement is highres picture of my previous eeprom

**KenshinPT** · 13th January, 2011, 07:01 PM

Now that you posted that picture... mine is a 93C56A from ATMEL. The *A version of Microchip is 8 bit and the *A version of ATMEL is 16bit.

Problem solved. You should use a 16bit EEPROM

The one you ordered from Microchip: 93C86A is 8 bit only

The mistake here was the manufaturer labels.

ATMEL labels are all wrong... other manufaturer use the same labels:
A is for 8bit
B is for 16bit
C is for both.

Damn you ATMEL

**tomasfilip** · 13th January, 2011, 07:18 PM

Originally Posted by tr3ce13

It works for me, always needs more power to write than to read.
The 93c46 have any internal conecttion, vcc pin have 4,6v output (whitout connected to anywhere)
My cable have 6 and 7 93c46 pins (NC) connected to 5v usb-port

unfortunatelly doesn't works for AT93C46, I have also 4,63V on VCC pin, but always cable is recognized as USB <-> Serial (default when eeprom cannot be recognized).. when I do connetion back, is called as Ross-Tech

but I can imagine for others manufacturer this aproach will works..

I bend pin 8 and 7 too (should be NC, but I have on PCB gnd on pin 7)