AM29LV2562M AMD [Advanced Micro Devices], AM29LV2562M Datasheet - Page 43

• Manufacturer Part Number: AM29LV2562M
• Manufacturer: AMD [Advanced Micro Devices]

Command Definitions
Legend:
X = Don’t care
RA = Read Address of the memory location to be read.
RD = Read Data read from location RA during read operation.
PA = Program Address. Addresses latch on the falling edge of the WE#
or CE# pulse, whichever happens later.
PD = Program Data for location PA. Data latches on the rising edge of
WE# or CE# pulse, whichever happens first.
Notes:
1.
2. All values are in hexadecimal.
3. Except for the read cycle and the fourth cycle of the autoselect
4. Data bits DQ31–DQ16 are don’t care in command sequences,
5. Unless otherwise noted, address bits A23–A11 are don’t cares.
6. No unlock or command cycles required when device is in read
7. The Reset command is required to return to the read mode (or to
8. The fourth cycle of the autoselect command sequence is a read
9. The device ID must be read in three cycles.
10. If WP# protects the highest address sector, the data is 9898h for
December 16, 2005
Read (Note 6)
Reset (Note 7)
Enter SecSi Sector Region
Exit SecSi Sector Region
Program
Write to Buffer (Note 11)
Program Buffer to Flash
Write to Buffer Abort Reset (Note 13)
Unlock Bypass
Unlock Bypass Program (Note 14)
Unlock Bypass Reset (Note 15)
Chip Erase
Sector Erase
Program/Erase Suspend (Note 16)
Program/Erase Resume (Note 17)
CFI Query (Note 18)
See Table 1 for description of bus operations.
command sequence, all bus cycles are write cycles.
except for RD, PD and DWC.
mode.
the erase-suspend-read mode if previously in Erase Suspend)
when the device is in the autoselect mode, or if DQ5 and/or DQ13
goes high while the device is providing status information.
cycle. Data bits DQ31–DQ16 are don’t care. See the
Command Sequence
factory locked and 1818h for not factory locked. If WP# protects
the lowest address sector, the data is 8888h for factory locked
and 0808h for not factor locked.
Manufacturer ID
Device ID (Note 9)
SecSi
(Note 10)
Sector Group Protect Verify
(Note 12)
TM
Command
Sequence
Sector Factory Protect
(Note 1)
section for more information.
Table 10. Command Definitions (x32 Mode, WORD# = V
1
1
4
6
4
4
3
4
4
3
1
3
3
2
2
6
6
1
1
1
Addr
XXX
XXX
XXX
XXX
XXX
555
555
555
555
555
555
555
555
555
555
555
555
RA
SA
55
First
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
A0A0
B0B0
F0F0
9898
Data
2929
9090
3030
RD
Autoselect
D A T A S H E E T
Addr
XXX
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
PA
Second
Am29LV2562M
5555
Data
5555
5555
5555
5555
5555
5555
5555
5555
5555
0000
5555
5555
PD
SA = Sector Address of sector to be verified (in autoselect mode) or
erased. Address bits A23–A15 uniquely select any sector.
WBL = Write Buffer Location. Address must be within the same write
buffer page as PA.
DWC = Doubleword Count. Number of write buffer locations to load
minus 1.
11. The total number of cycles in the command sequence is
12. The data is 0000h for an unprotected sector and 0101h for a
13. Command sequence resets device for next command after
14. The Unlock Bypass command is required prior to the Unlock
15. The Unlock Bypass Reset command is required to return to the
16. The system may read and program in non-erasing sectors, or
17. The Erase Resume command is valid only during the Erase
18. Command is valid when device is ready to read array data or when
Addr
555
555
555
555
555
555
555
555
555
555
555
SA
determined by the number of doublewords written to the write
buffer. The maximum number of cycles in the command
sequence is 21.
protected sector.
aborted write-to-buffer operation.
Bypass Program command.
read mode when the device is in the unlock bypass mode.
enter the autoselect mode, when in the Erase Suspend mode.
The Erase Suspend command is valid only during a sector erase
operation.
Suspend mode.
device is in autoselect mode.
Third
Bus Cycles (Notes 2–5)
A0A0
9090
9090
9090
9090 (SA)X02
8888
9090
2525
F0F0
2020
8080
8080
Data
Addr
XXX
X00
X01
X03
555
555
SA
PA
Fourth
00000101
(Note 10)
22227
AAAA
AAAA
0000/
0000
DWC
Data
0101
E7E
PD
IH
)
Addr
X0E
2AA
2AA
PA
Fifth
Data
2222
1212
5555
5555
PD
Addr
WBL
X0F
555
SA
Sixth
Data
2222
0101
1010
3030
PD
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