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M29W400DT Datasheet(PDF) 42 Page - STMicroelectronics

Part # M29W400DT
Description  4 Mbit (512 Kb x 8 or 256 Kb x 16, boot block) 3 V supply Flash memory
PDF  48 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M29W400DT Datasheet(HTML) 42 Page - STMicroelectronics

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Block protection
M29W400DT, M29W400DB
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Table 23.
Programmer technique bus operations, BYTE =VIH or VIL
Operation
E
G
W
Address inputs
A0-A17
Data inputs/outputs
DQ15A–1, DQ14-DQ0
Block Protect
VIL
VID
VIL
pulse
A9 = VID,
A12-A17 block address,
others = X
X
Chip Unprotect
VID VID
VIL
pulse
A9 = VID, A12 = VIH, A15 = VIH,
others = X
X
Block Protection
Verify
VIL
VIL
VIH
A0 = VIL, A1 = VIH, A6 = VIL,
A9 = VID,
A12-A17 block address,
others = X
Pass = XX01h
Retry = XX00h
Block
Unprotection
Verify
VIL
VIL
VIH
A0 = VIL, A1 = VIH, A6 = VIH,
A9 = VID,
A12-A17 block address,
others = X
Retry = XX01h
Pass = XX00h



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