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BQ20Z655: 关于这个芯片解锁的问题

Part Number: BQ20Z655
Other Parts Discussed in Thread: BQ40Z50, BQSTUDIO

在这个界面上,输入什么命令可以将电量计芯片解锁

  • 您好,解码密码默认的试一下0414 3672,如果修改过密码需要知道密码才能解码。

  • 我在SMB Command  输入60地址,然后输入密码,没有成功解锁,是密码有问题,还是我解锁的步骤不对,请解答,谢谢

  • 您好,现在SBS页面的ManufacturerAccess 框中输入密码看是否能解码,如果能解码说明密码是对的。

    再到SMB 界面中的60地址连续输入密码试一下。

    详细请参考TRM B.16 UnSealKey (0x60)

    www.ti.com.cn/.../BQ20Z655

  • 在SBS页面的ManufacturerAccess 框中输入你提供的0414 3672密码,已经成功从Sealed模式变为Unsealed,从Unsealed模式变为Full  Access该如何解锁,密码又是什么?如果重新设置密码,该如何操作?

  • 您好,从Unsealed模式变为Full  Access,请在ManufacturerAccess 下两遍FFFF,FFFF试一下。

    修改密码方法如下:

    The unseal key can be read and changed via the extended SBS block command UnSealKey when in FULL ACCESS mode. To return to the SEALED mode, either a hardware reset is needed, or the ManufacturerAccess seal device command is needed to transit from FULL ACCESS or UNSEALED to SEALED.

  • 修改密码的具体步骤是什么,我在Pro页面,SMB Command 输入44,Data里面输入0035,以及要修改的新密码1234 5678 FFFF FFFF,但是没有修改成功,请指导修改密码的具体步骤。谢谢

  • 您好,找到BQ40Z50修改密码的方法,您可以参考一下

    I want to change Security Keys as "20180823" via Bqstudio.Advanced Comm SMB. Is below step 6~8 right?

    At FULL ACCESS.
    1. Key in Write Word command=00
    2. Key in Word=0035
    3. Click "Write Word" bottom.
    4. Key in Read Block command=23
    5. Click "Read Block" bottom to check default key is "14 04 72 36 FF FF FF FF".
    6. Key in Write Block command=44
    7. Key in Block command=35 00 18 20 23 08 FF FF FF FF
    8. then click "Write Block" then go back to step 5 to check key.