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M29W320DT Datasheet(PDF) 53 Page - STMicroelectronics

Part No. M29W320DT
Description  32 Mbit 4Mb x8 or 2Mb x16, Boot Block 3V Supply Flash Memory
Download  56 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M29W320DT Datasheet(HTML) 53 Page - STMicroelectronics

 
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M29W320DT, M29W320DB
Block Protection
53/56
Figure 19.
In-System Equipment Chip Unprotect Flowchart
AI03472
WRITE 60h
ANY ADDRESS WITH
A0 = VIL, A1 = VIH, A6 = VIH
n = 0
CURRENT BLOCK = 0
Wait 10ms
WRITE 40h
ADDRESS = CURRENT BLOCK ADDRESS
A0 = VIL, A1 = VIH, A6 = VIH
RP = VIH
++n
= 1000
START
FAIL
PASS
YES
NO
DATA
=
00h
YES
NO
RP = VIH
Wait 4µs
READ DATA
ADDRESS = CURRENT BLOCK ADDRESS
A0 = VIL, A1 = VIH, A6 = VIH
RP = VID
ISSUE READ/RESET
COMMAND
ISSUE READ/RESET
COMMAND
PROTECT ALL BLOCKS
INCREMENT
CURRENT BLOCK
LAST
BLOCK
YES
NO
WRITE 60h
ANY ADDRESS WITH
A0 = VIL, A1 = VIH, A6 = VIH


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