BQ26100中文资料具有 SDQ 接口、基于 SHA-1/HMAC 的安全和认证 IC数据手册TI规格书

描述 Description

The bq26100 device provides a method to authenticate battery packs, ensuring that only packs manufactured by authorized sub-contractors are used in the end application. The security is achieved using the SHA-1 hash function inside the widely adopted keyed-hash message authentication code (HMAC) construction. A unique 128-bit key is stored in each bq26100 device, allowing the host to authenticate each pack.

The bq26100 device communicates to the system over a simple one-wire bi-directional serial interface. The 5-kbits/s SDQ bus interface reduces communications overhead in the external microcontroller. The bq26100 device also derives power over the SDQ bus line via an external capacitor.

特性 Features

• Provides authentication of battery packs through SHA-1 engine based HMAC
• Internal time-base eliminates external crystal oscillator
• Active:
• Powers directly from the communication bus
• 6-lead VSON package