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M28W640FSU-ZAT Datasheet(PDF) 11 Page - STMicroelectronics

No. de pieza M28W640FSU-ZAT
Descripción Electrónicos  32Mbit (2Mb x16) and 64Mbit (4Mb x16) 3V Supply, Uniform Block, Secure Flash Memories
PDF  49 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M28W640FSU-ZAT Datasheet(HTML) 11 Page - STMicroelectronics

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M28W320FSU, M28W640FSU
HARDWARE PROTECTION
All devices feature hardware protection. Refer to
SIGNAL DESCRIPTIONS section for a detailed
description of these signals.
VPP ≤ VPPLK. The VPP pin protects all the memo-
ry blocks from program and erase operations. Re-
fer to SIGNAL DESCRIPTIONS section for a
detailed description of these signals.
SECURITY FEATURES
The
M28W320FSU
and
M28W640FSU
are
equipped with KRYPTO Security features per-
forming software protection. They allow any block
to be protected from program/erase or read oper-
ations:
■
Modify Protection including Volatile Block
Lock/Unlock, Non-Volatile Block Modify
Protection, Non-Volatile Password Modify
Protection and Irreversible Protection.
■
Read Protection.
The KRYPTO features (Modify Protection mode,
Read Protection mode and Device Authentication
mechanism) are not described in this Datasheet.
For further details concerning these additional pro-
tection modes please contact ST Sales Offices.
The devices also feature a 64 bit Unique Device
Identifier and a 128 bit user-programmable OTP
segment (see Figure 6., Protection Register Mem-
ory Map and Protection Register Program Com-
mand).



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