Texas Instruments BQ30z554EVM Evaluation Module BQ30Z554EVM BQ30Z554EVM 데이터 시트
제품 코드
BQ30Z554EVM
Seal/Authentication Screen
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Seal/Authentication Screen
To seal, unseal, or allow full access—which enables users to reprogram the device—select one of these
three modes on the Seal/Authentication screen and click Go.
three modes on the Seal/Authentication screen and click Go.
NOTE:
When the device is sealed, users cannot write to the data flash.
The text boxes at the top of the screen are informational and their content loads during the unseal
process.
process.
Unsealing the bq30z554 is the reverse procedure from SHA-1 authentication. (For more information on
SHA-1 encryption, refer to the bq30z5x-R1 Technical Reference Manual
SHA-1 encryption, refer to the bq30z5x-R1 Technical Reference Manual
). The gas gauge
generates the random number and challenges the EVSW, which must provide a valid key in order to
unseal the device. Full access to ROM mode occurs in a similar manner. The Seal/Authentication screen
shows the default 128-bit key in the Key (129 bits) text box.
unseal the device. Full access to ROM mode occurs in a similar manner. The Seal/Authentication screen
shows the default 128-bit key in the Key (129 bits) text box.
Figure 14. Seal/Authentication Screen
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SLUUA36 – November 2012
bq30z554EVM SBS 1.1 Impedance Track™ Enabled Battery Management
Solution EVM
Copyright © 2012, Texas Instruments Incorporated