am49lv128bm Meet Spansion Inc., am49lv128bm Datasheet - Page 34

• Manufacturer Part Number: am49lv128bm
• Description: Stacked Multi-chip Package Mcp ,128 Megabit 8 M ? 16-bit ,uniform Sector Flash Memory And 32 Mbit 2 M ? 16-bit Pseudo-static Ram With Page Mode Featuring Mirrorbit Technology,supplemental Datasheet
• Manufacturer: Meet Spansion Inc.

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 DQ15–DQ8 are don’t care in command sequences,
5. Unless otherwise noted, address bits A22–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 98H for
32
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 WC.
mode.
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.
cycle. Data bits DQ15–DQ8 are don’t care. See the Autoselect
Command Sequence section for more information.
factory locked and 18H for not factory locked. If WP# protects the
Manufacturer ID
Device ID (Note 9)
SecSi™ Sector Factory Protect
(Note 10)
Sector Group Protect Verify
(Note 12)
Command
Sequence
(Note 1)
1
1
4
4
4
4
3
4
4
3
1
3
3
2
2
6
6
1
1
1
Addr
XXX
XXX
XXX
555
555
555
555
555
555
555
555
555
555
555
555
RA
SA
BA
BA
55
First
Table 9. Command Definitions
Data
RD
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
F0
29
A0
90
B0
30
98
Addr
XXX
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
PA
Am49LV128BM
Second
Data
PD
55
55
55
55
55
55
55
55
55
55
00
55
55
SA = Sector Address of sector to be verified (in autoselect mode) or
erased. Address bits A22–A15 uniquely select any sector.
WBL = Write Buffer Location. Address must be within the same write
buffer page as PA.
WC = Word 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 00h for an unprotected sector and 01h for a protected
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
lowest address sector, the data is 88H for factory locked and 08H
for not factory locked.
determined by the number of words written to the write buffer. The
maximum number of cycles in the command sequence is 21.
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)
Data
90
90
90
90
88
90
A0
25
F0
20
80
80
(SA)X02
Addr
XXX
X00
X01
X03
555
555
SA
PA
Fourth
(Note 10)
00/01
227E
Data
0001
WC
PD
AA
AA
00
Addr
X0E
2AA
2AA
PA
Fifth
2212
Data
PD
55
55
June 17, 2004
Addr
WBL
X0F
555
SA
Sixth
2200
Data
PD
10
30