Power IC 在BCD Process的應用

yslai1222

"BCD enables integration of bipolar, logic, and high-voltage circuits on a single chip. The benefit of this level of integration will enable new innovation in the next generation power-management products
) ~* q( v& [  h6 F% TPower-management ICs will benefit from having OTP/MTP for trim, calibration and secure key and code storage to improve performance and yield at low cost."
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' r% H4 j' {# ]" @3 X7 m) }* f. W* i這是從某個fab節錄下來的  請問一下 power management真的有需要儲存secure key跟 code嗎？  因為這些通常都在digital部分  若有 這個secure key是在做啥種保密的?(ex. TV 有HDCP, SD有CPRM...)那code 又是儲存啥功能的程式碼 ? size大概需要多大 ？ 需要erase的次數大概多少次？  
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謝謝指教

niko0417

[個人愚見]
3 q$ z7 b" k% S- u' p"secure"是動詞來著？