SB6120: detect, but NO ERASE and NO WRITE...

merkin · Post by **merkin** » Tue Sep 11, 2012 9:29 pm

usbbdm wrote:If W# is high then it is hardware locked and maybe it can be unlocked with some IO pin control. However if we do not know the register it can be considered hardware locked. That is why he cannot program ISP with this newer model of SB6120.

W# is active low...not high
And look at page 22 of the datasheet from the link; specifically the table and the last sentence.

Also since my diagram has W# tied high, we can read(page 20) and write(page 21) status register and set all software protection bits to 0 *if necessary.

But OP cannot even detect the flash, he must have fried the chip during removal because the flash detected prior to desoldering it..

usbbdm wrote:Flash is not expensive. It is better replace the flash than an entire modem.

But the value these days is the OEM certs? CAPONE can confirm/deny...he is the resident modem expert, right?

@usbbdm
Can NT drive CS# high and low in SPI mode, or is a pull-up needed?

lamp · Post by **lamp** » Wed Sep 12, 2012 1:45 am

.

merkin wrote: ... he must have fried the chip during removal because the flash detected prior to desoldering it.

That is quite possible.

Maybe I used too much heat to remove the chip ...

I'll try to get new memory - but I don't know where
get ... The parts stores that I consulted
don't have this memory. Is there any compatible,
of other manufacturer (Atmel...)?
This AT25DF641 is OK?

.

CAPONE · Post by **CAPONE** » Wed Sep 12, 2012 1:52 am

merkin wrote:W# is active low...not high
And look at page 22 of the datasheet from the link; specifically the table and the last sentence.

Also since my diagram has W# tied high, we can read(page 20) and write(page 21) status register and set all software protection bits to 0 *if necessary.

But OP cannot even detect the flash, he must have fried the chip during removal because the flash detected prior to desoldering it..

But the value these days is the OEM certs? CAPONE can confirm/deny...he is the resident modem expert, right?

@usbbdm
Can NT drive CS# high and low in SPI mode, or is a pull-up needed?

I agree that the OEM Certs are Important. I believe the OP did manage to get a Backup of the Flash in OEM State. Even if somewhat currupted It may be Fixable. However as USBBDM say, Worst case senario, IT is less expensive to replace the flash than the entire modem.

merkin · Post by **merkin** » Wed Sep 12, 2012 11:03 am

http://www.spansion.com/Support/Datashe ... 64P_00.pdf

– Backward compatible with the S25FL064A device

http://www.mouser.com/ProductDetail/Spa ... k877uWo%3d

Or if you want more choices:
http://www.spansion.com/Products/Pages/ ... rence.aspx

Did you even get a good backup of the flash?

lamp · Post by **lamp** » Wed Sep 12, 2012 11:37 am

.

merkin wrote: Did you even get a good backup of the flash?

Thanks a lot, Mr. merkin!

Yes, I have a full dump of the flash!
You need?

I was preparing a text to inform you that, in fact,
the memory is dead. I put it in the modem and
not detect. Maybe too hot in withdrawal, maybe
a wrong connection to fried it!

I will study the links kindly sent to try and buy
the component.

Again, thank you for your interest in helping me!

.

CAPONE · Post by **CAPONE** » Wed Sep 12, 2012 3:38 pm

lamp wrote:.

Thanks a lot, Mr. merkin!

Yes, I have a full dump of the flash!
You need?I was preparing a text to inform you that, in fact,
the memory is dead. I put it in the modem and
not detect. Maybe too hot in withdrawal, maybe
a wrong connection to fried it!

I will study the links kindly sent to try and buy
the component.

Again, thank you for your interest in helping me!

.

No He was asking if you have full flash to recover Modem Back to Original Factory Condition with original CERTS after replacing the Flash.

lamp · Post by **lamp** » Wed Sep 12, 2012 4:04 pm

.

CAPONE wrote: No He was asking if you have full flash to recover Modem Back to Original Factory Condition with original CERTS after replacing the Flash.

OK, Mr. CAPONE, I understand.
I offered just in case he wants to file for studies.

.

CAPONE · Post by **CAPONE** » Wed Sep 12, 2012 6:00 pm

lamp wrote:.

OK, Mr. CAPONE, I understand.
I offered just in case he wants to file for studies.

.

As of right now we don't know if its good, corrupted or what since you was not able to recover the modem. we will need to see if it works once you replace the falsh. If it does not work them I may be able to repair it.......

did you get replacement flash?

lamp · Post by **lamp** » Thu Sep 13, 2012 9:24 am

.

CAPONE wrote: did you get replacement flash?

Thanks for the interest.

No, I don't bought the chip.
I need more time for it.

But I'll return with news - after
of the exchange of the memory...

.

lamp · Post by **lamp** » Fri Oct 19, 2012 2:12 pm

.

Hello, friends!

The memory arrived!
I will use a AT25DF641 (Atmel) because I
not found the memory Spansion. By the datasheet
is it the same. Datasheet here.

I need help...

For the write, I use the conections below?
(The memory is out of circuit.)

I need of the resistor 2k2 (pin 7 - 9 memory)?

Thanks!

.

Post by **usbbdm** » Fri Oct 19, 2012 3:57 pm

I am not sure but I did before without 2.2K and it works fine.

lamp · Post by **lamp** » Fri Oct 19, 2012 7:49 pm

.

usbbdm wrote:I am not sure but I did before without 2.2K and it works fine.

All connections are right?
I can go ahead? Without 2K2?

.

Post by **usbbdm** » Fri Oct 19, 2012 9:10 pm

Right. Try and post your result.

lamp · Post by **lamp** » Tue Oct 30, 2012 11:33 am

.

usbbdm wrote:Right. Try and post your result.

Don't detect the flash...
This flash memory is blank, new...

: (

.

speciaist · Post by **speciaist** » Sat Apr 27, 2013 1:31 pm

i have the same issue but is sb6121 !! all my connection are fine(100% tested)

i try tonight 2.2k resistor !!!

the modem is working right now

USB JTAG

SB6120: detect, but NO ERASE and NO WRITE...

Who is online