M28W640ECT Datasheet, PDF (43/55 Pages) STMicroelectronics – 64 Mbit 4Mb x16, Boot Block 3V Supply Flash Memory

M28W640ECT, M28W640ECB
Table 31. Security Code Area
Offset
Data
Description
80h
00XX
Protection Register Lock
81h
XXXX
82h
XXXX
64 bits: unique device number
83h
XXXX
84h
XXXX
85h
XXXX
86h
XXXX
87h
XXXX
88h
XXXX
128 bits: User Programmable OTP
89h
XXXX
8Ah
XXXX
8Bh
XXXX
8Ch
XXXX
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