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29F040 Datenblatt(PDF) 26 Page - STMicroelectronics

Teilenummer 29F040
Bauteilbeschribung  4 Mbit 512Kb x8, Uniform Block Single Supply Flash Memory
PDF  31 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

29F040 Datenblatt(HTML) 26 Page - STMicroelectronics

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PROTECT
ALL BLOCKS
AI01371E
A6, A12, A16 = VIH
E, G, A9 = VIH
DATA
E, G, A9 = VID
Wait 4µs
W = VIH
E, G = VIH
READ at UNPROTECTION
ADDRESS: A1, A6 = VIH, A0 = VIL and
A16, A17, A18 DEFINING BLOCK
(see Note 1)
Wait 10ms
Wait 4µs
=
00h
INCREMENT
BLOCK
n = 0
Wait 4µs
W = VIL
++n
= 1000
START
FAIL
YES
YES
NO
PASS
NO
LAST
SECT.
YES
NO
Figure 14. Block Unprotecting Flowchart
Note: 1. A6 is kept at VIH during unprotection algorithm in order to secure best unprotection verification. During all other protection status
reads, A6 must be kept at VIL.
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M29F040



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