bq20z451 version 0511

Vladimir5

Intellectual 380 points

Other Parts Discussed in Thread: BQ20Z451, BQ30Z55, BQEVSW

Hi All !

I have bq20z451 v.0511

SEAL = ON
Question: how to initiate the procedure UNSEAL?

If someone knows - please write me an email: vvg@skyline.od.ua
Any ideas - are welcome.

Chip name:		    bq20z451
H/W Version:		04.51
F/W Version:		05.11
Mfr Name:		    SMP
Device Name:		bq20z451

over 11 years ago

0 Onyx Ahiakwo over 11 years ago

TI__Guru* 76230 points

Hi Vladimir,

The pack maker most likely changed the unseal codes and you will have to obtain it from them. If it wasn't changed, the default codes are in the unseal section of the attached document.

6787.Quick-Start Guide for bq20zxx Family Gas Gauges (slua421a).pdf

thanks

Onyx

0 Vladimir5 over 11 years ago in reply to Onyx Ahiakwo

Intellectual 380 points

The pack maker changed the format of the access codes.

Also changed the algorithm procedures unseal and full access.

Thanks for the link to the document.
Described in the document, valid for FW Version: 04.06

But for FW Version: 05.11 -- is not fair

0 Vladimir5 over 11 years ago in reply to Vladimir5

Intellectual 380 points

Hi All.

My question is not closed.
If someone knows the answer - help please.

0 Onyx Ahiakwo over 11 years ago in reply to Vladimir5

TI__Guru* 76230 points

We do not have the codes.The codes were changed by the pack manufacturers.

0 Vladimir5 over 11 years ago in reply to Onyx Ahiakwo

Intellectual 380 points

Thanks for the answer.
I know that the manufacturer changes the codes.
But the manufacturer has not only changed the password, but and the initialization procedure for entering passwords.
I have a suspicion that this procedure is similar to that used in bq30z55.

I will be very grateful for any useful information about this chip.

My e-mail: vvg@skyline.od.ua