A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 229 / 812
1.18. Security ID
1.18.1. Overview
There is one on chip EFUSE, which provides 128-bit, 64-bit and one 32-bit electrical fuses for
security application.
It features:
128-bit electrical fuses for root key
128-bit electrical fuses for boot key
64-bit electrical fuses for securiy JTAG
16-bit electrical fuses for chip configure application
16-bit electrical fues for vendors application
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