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| 型號： | AM29PL160CB-90 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only High Performance Page Mode Flash Memory |
| 中文描述： | 16兆位（2米× 8位/ 1個M x 16位）的CMOS 3.0伏，不僅具備高性能頁面模式閃存 |
| 文件頁數(shù)： | 16/44頁 |
| 文件大?。?/td> | 987K |
| 代理商： | AM29PL160CB-90 |
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June 12, 2002
Am29PL160C
15
HARDWARE DATA PROTECTION
The command sequence requirement of unlock cycles
for programming or erasing provides data protection
against inadvertent writes (refer to Table 10 for com-
mand definitions). In addition, the following hardware
data protection measures prevent accidental erasure
or programming, which might otherwise be caused by
spurious system level signals during V
CC
power-up
and power-down transitions, or from system noise.
Low V
CC
Write Inhibit
When V
CC
is less than V
LKO
, the device does not ac-
cept any write cycles. This protects data during V
CC
power-up and power-down. The command register
and all internal program/erase circuits are disabled,
and the device resets. Subsequent writes are ignored
until V
CC
is greater than V
LKO
. The system must pro-
vide the proper signals to the control pins to prevent
unintentional writes when V
CC
is greater than V
LKO
.
Write Pulse “Glitch” Protection
Noise pulses of less than 5 ns (typical) on OE#, CE# or
WE# do not initiate a write cycle.
Logical Inhibit
Write cycles are inhibited by holding any one of OE# =
V
IL
, CE# = V
IH
or WE# = V
IH
. To initiate a write cycle,
CE# and WE# must be a logical zero while OE# is a
logical one.
Power-Up Write Inhibit
If WE# = CE# = V
IL
and OE# = V
IH
during power up,
the device does not accept commands on the rising
edge of WE#. The internal state machine is automati-
cally reset to reading array data on power-up.
Table 9.
Primary Vendor-Specific Extended Query
Addresses
(Word Mode)
Addresses
(Byte Mode)
Data
Description
40h
41h
42h
80h
82h
84h
0050h
0052h
0049h
Query-unique ASCII string “PRI”
43h
86h
0031h
Major version number, ASCII
44h
88h
0030h
Minor version number, ASCII
45h
8Ah
0000h
Address Sensitive Unlock
0 = Required, 1 = Not Required
46h
8Ch
0002h
Erase Suspend
0 = Not Supported, 1 = To Read Only, 2 = To Read & Write
47h
8Eh
0001h
Sector Protect
0 = Not Supported, X = Number of sectors in per group
48h
90h
0001h
Sector Temporary Unprotect
00 = Not Supported, 01 = Supported
49h
92h
0004h
Sector Protect/Unprotect scheme
01 = 29F040 mode, 02 = 29F016 mode,
03 = 29F400 mode, 04 = 29LV800A mode
4Ah
94h
0000h
Simultaneous Operation
00 = Not Supported, 01 = Supported
4Bh
96h
0000h
Burst Mode Type
00 = Not Supported, 01 = 4 Word Linear Burst, 02 = 8 Word Linear Burst,
03 = 32 Linear Burst, 04 = 4 Word Interleave Burst
4Ch
98h
0002h
Page Mode Type
00 = Not Supported, 01 = 4 Word Page, 02 = 8 Word Page
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