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參數(shù)資料
| 型號： | AM29SL800DB90 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 1.8 Volt-only Super Low Voltage Flash Memory |
| 中文描述： | 8兆位（1 M中的x 8-Bit/512畝x 16位），1.8伏的CMOS只超低電壓快閃記憶體 |
| 文件頁數(shù)： | 20/46頁 |
| 文件大?。?/td> | 1177K |
| 代理商： | AM29SL800DB90 |
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A D V A N C E I N F O R M A T I O N
March 17, 2003
Am29SL800D
19
COMMAND DEFINITIONS
Table 5.
Am29SL800D 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 A18–A12 uniquely select any sector.
Notes:
1.
2.
3.
See Table 1 for description of bus operations.
All values are in hexadecimal.
Except when reading array or autoselect data, all bus cycles are
write operations.
Data bits DQ15–DQ8 are don’t cares for unlock and command
cycles.
Address bits A18–A11 are don’t cares for unlock and command
cycles, unless SA or PA required.
No unlock or command cycles required when reading array data,
unless SA or PA required.
The Reset command is required to return to reading array data
when device is in the autoselect mode, or if DQ5 goes high (while
the device is providing status data).
The fourth cycle of the autoselect command sequence is a read
4.
5.
6.
7.
8.
cycle.
The data is 00h for an unprotected sector and 01h for a protected
sector.
See “Autoselect Command Sequence”
for more
information.
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
reading array data 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.
Command
Sequence
(Note 1)
C
Bus Cycles (Notes 2-5)
Third
Addr
Data Addr
First
Second
Addr
Fourth
Fifth
Sixth
Addr
RA
XXX
555
AAA
555
AAA
555
AAA
Data
RD
F0
Data
Data
Addr Data
Addr
Data
Read (Note 6)
Reset (Note 7)
1
1
A
Manufacturer ID
Word
Byte
Word
Byte
Word
Byte
4
AA
2AA
555
2AA
555
2AA
555
55
555
AAA
555
AAA
555
AAA
90
X00
01
Device ID,
Top Boot Block
4
AA
55
90
X01
X02
X01
X02
22EA
EA
226B
6B
XX00
XX01
00
01
TBD
TBD
TBD
TBD
Device ID,
Bottom Boot Block
4
AA
55
90
Sector Protect Verify
(Note 9)
Word
4
555
AA
2AA
55
555
90
(SA)
X02
Byte
AAA
555
AAA
(SA)
X04
Extension
Word
4
555
AA
2AA
55
555
90
X03
Byte
AAA
555
AAA
X04
Program
Word
Byte
Word
Byte
4
555
AAA
555
AAA
XXX
XXX
555
AAA
555
AAA
XXX
XXX
AA
2AA
555
2AA
555
PA
XXX
2AA
555
2AA
555
55
555
AAA
555
AAA
A0
PA
PD
Unlock Bypass
3
AA
55
20
Unlock Bypass Program (Note 10)
Unlock Bypass Reset (Note 11)
2
2
A0
90
PD
00
Chip Erase
Word
Byte
Word
Byte
6
AA
55
555
AAA
555
AAA
80
555
AAA
555
AAA
AA
2AA
555
2AA
555
55
555
AAA
10
Sector Erase
6
AA
55
80
AA
55
SA
30
Erase Suspend (Note 12)
Erase Resume (Note 13)
1
1
B0
30
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