M58LT256JST Datasheet, PDF (33/108 Pages) STMicroelectronics – 256 Mbit (16 Mb × 16, multiple bank, multilevel, burst) 1.8 V supply, secure Flash memories

M58LT256JST, M58LT256JSB
Command interface
Table 8. Protection Register locks
Lock
Number Address
Bits
Description
Lock 1
80h
Bit 0
Bit 1
Pre-programmed to protect Unique Device Number, address
81h to 84h in PR0
Protects 64 bits of OTP segment, address 85h to 88h in PR0
Bits 2 to 15 Reserved
Bit 0 Protects 128 bits of OTP segment PR1
Bit 1 Protects 128 bits of OTP segment PR2
Bit 2 Protects 128 bits of OTP segment PR3
Lock 2
89h
Bit 13 Protects 128 bits of OTP segment PR14
Bit 14 Protects 128 bits of OTP segment PR15
Bit 15 Protects 128 bits of OTP segment PR16
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