參數(shù)資料
型號(hào): M39432
廠商: 意法半導(dǎo)體
英文描述: Single Chip 4Mbit Flash and 256Kbit Parallel EEPROM Memory(單片4Mb閃速和256Kb并行EEPROM)
中文描述: 單芯片的4Mb并行閃存和256Kbit EEPROM存儲(chǔ)器(單片4Mb的閃速和256Kb的并行的EEPROM)
文件頁數(shù): 14/30頁
文件大?。?/td> 247K
代理商: M39432
AI01949B
A6, A12, A16 = VIH
G, A9 = VIH
DATA
=
00h
EF, G, A9 = VID
Wait 4μs
W = VIH
EF, G = VIH
READ at UNPROTECTION
ADDRESS: A1, A6 = VIH, A0 = VIL and
A16, A17, A18 DEFINING BLOCK
(see Note 1)
Wait 10ms
Wait 4μs
INCREMENT
BLOCK
n = 0
Wait 4μs
W = VIL
++n
= 1000
START
FAIL
YES
YES
NO
PASS
NO
LAST
SECT.
YES
NO
EE = EF = VIH
Figure 9. Block Unprotecting Flowchart
Note:
1. A6 is kept at V
during unprotection algorithm in order to secure best unprotection verification. During all other protection status
reads, A6 must be kept at V
IL
.
14/30
M39432
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