参数资料
型号: M39208-15WNB1
厂商: STMICROELECTRONICS
元件分类: PROM
英文描述: 256K X 8 FLASH 2.7V PROM, 150 ns, PDSO32
封装: 8 X 14 MM, PLASTIC, TSOP-32
文件页数: 6/30页
文件大小: 218K
代理商: M39208-15WNB1
AI02597
A6, A12, A15 = VIH
G, A9 = VIH
DATA
EF, G, A9 = VID
Wait 4s
W = VIH
EF, G = VIH
READ at UNPROTECTION
ADDRESS: A1, A6 = VIH, A0 = VIL and
A16, A17 DEFINING SECTOR
(see Note 1)
Wait 10ms
Wait 4s
=
00h
INCREMENT
SECTOR
n = 0
Wait 4s
W = VIL
++n
= 1000
START
FAIL
YES
NO
PASS
NO
LAST
SECT.
YES
NO
EE = EF = VIH
Figure 9. Sector 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.
14/30
M39208
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