參數(shù)資料
型號(hào)： L640DU90NI
廠商： Advanced Micro Devices, Inc.
英文描述： 64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileIO⑩ Control
中文描述： 64兆位（4個(gè)M x 16位），3.0伏的CMOS只均勻部門閃存與VersatileIO⑩控制記憶
文件頁數(shù)： 30/57頁
文件大?。?/td> 885K
代理商： L640DU90NI
28
Am29LV640D/Am29LV641D
22366C6 January22,2007
D A T A S H E E T
Command Definitions
Table 10.
Command Definitions
Legend:
X = Don’t care
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
PA = Address of the memory location to be programmed. Addresses
latch on the falling edge of the WE# or CE# pulse, whichever happens
later.
PD = Data to be programmed at location PA. Data latches on the rising
edge of WE# or CE# pulse, whichever happens first.
SA = Address of the sector to be verified (in autoselect mode) or
erased. Address bits A21–A15 uniquely select any sector.
Notes:
1.
2.
3.
See
Table 1 on page 10
for a description of bus operations.
All values are in hexadecimal.
Except for the read cycle and the fourth cycle of the autoselect
command sequence, all bus cycles are write cycles.
During unlock cycles, (when lower address bits are 555 or 2AAh
as shown in table) address bits higher than A11 (except where BA
is required) and data bits higher than DQ7 are don’t cares.
No unlock or command cycles required when device is in read
mode.
The Reset command is required to return to the read mode (or to
the erase-suspend-read mode if previously in Erase Suspend)
when the device is in the autoselect mode, or if DQ5 goes high
(while the device is providing status information).
The fourth cycle of the autoselect command sequence is a read
cycle. Data bits DQ15–DQ8 are don’t care. See the
“Autoselect
Command Sequence” on page 24
section for more information.
4.
5.
6.
7.
8.
If WP# protects the highest address sector (or if WP# is not
available), the data is 98h for factory locked and 18h for not
factory locked. If WP# protects the lowest address sector, the
data is 88h for factory locked and 08h for not factor locked.
The data is 00h for an unprotected sector group and 01h for a
protected sector group.
10. The Unlock Bypass command is required prior to the Unlock
Bypass Program command.
11. The Unlock Bypass Reset command is required to return to the
read mode when the device is in the unlock bypass mode.
12. The system may read and program in non-erasing sectors, or
enter the autoselect mode, when in the Erase Suspend mode.
The Erase Suspend command is valid only during a sector erase
operation.
13. The Erase Resume command is valid only during the Erase
Suspend mode.
9.
14. Command is valid when device is ready to read array data or when
device is in autoselect mode.
Command
Sequence
C
Bus Cycles (Notes 1–4)
Third
Addr
Data
First
Second
Addr
Fourth
Fifth
Sixth
Addr
RA
XXX
555
555
Data
RD
F0
AA
AA
Data
Addr
Data
Addr
Data
Addr
Data
Read (
Note 5
)
Reset (
Note 6
)
Manufacturer ID
Device ID
1
1
4
4
A
N
)
2AA
2AA
55
55
555
555
90
90
X00
X01
0001
22D7
SecSi
Sector Factory
Protect (
Note 8
)
6
555
AA
2AA
55
555
88
X02
60
X02
40
X02
see
(
Note
9
)
Sector Group Protect Verify
(
Note 9
)
Enter SecSi Sector Region
Exit SecSi Sector Region
Program
Unlock Bypass
4
555
AA
2AA
55
555
90
(SA)X02
XX00/
XX01
3
4
4
3
2
2
6
6
1
1
1
555
555
555
555
AA
AA
AA
AA
2AA
2AA
2AA
2AA
55
55
55
55
555
555
555
555
88
90
A0
20
XXX
PA
00
PD
Unlock Bypass Program (
Note 10
)
XXX
A0
PA
PD
Unlock Bypass Reset (
Note 11
)
Chip Erase
Sector Erase
Erase Suspend (
Note 12
)
Erase Resume (
Note 13
)
CFI Query (
Note 14
)
XXX
555
555
XXX
XXX
55
90
AA
AA
B0
30
98
XXX
2AA
2AA
00
55
55
555
555
80
80
555
555
AA
AA
2AA
2AA
55
55
555
SA
10
30
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L640DU90RF 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileIO⑩ Control
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L640GU53NI 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O⑩ Control
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