參數(shù)資料
型號: 29F040
廠商: Advanced Micro Devices, Inc.
英文描述: 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
中文描述: 4兆位(512畝× 8位)的CMOS 5.0伏只,統(tǒng)一部門快閃記憶體
文件頁數(shù): 26/31頁
文件大?。?/td> 232K
代理商: 29F040
PROTECT
ALL BLOCKS
AI01371E
A6, A12, A16 = VIH
E, G, A9 = VIH
DATA
=
00h
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
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 V
during unprotection algorithm in order to secure best unprotection verification. During all other protection status
reads, A6 must be kept at V
IL
.
26/31
M29F040
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