am49lv6408m Meet Spansion Inc., am49lv6408m Datasheet - Page 35

• Manufacturer Part Number: am49lv6408m
• Description: Stacked Multi-chip Mcp 64 Mbit 4 M ? 16 Bit Flash Memory And 8 Mbit 512k ? 16 Bit Pseudo Static Ram
• 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. During unlock cycles, when lower address bits are 555 or 2AAh
5. No unlock or command cycles required when device is in read
6. The Reset command is required to return to the read mode (or to
7. The fourth cycle of the autoselect command sequence is a read
8. The device ID must be read in three cycles. The data is 2201h for
9. If WP# protects the top two address sectors, the data is 98h for
November 5, 2003
Read (Note 5)
Reset (Note 6)
Enter SecSi Sector Region
Exit SecSi Sector Region
Program
Write to Buffer (Note 11)
Program Buffer to Flash
Write to Buffer Abort Reset (Note 12)
Unlock Bypass
Unlock Bypass Program (Note 13)
Unlock Bypass Reset (Note 14)
Chip Erase
Sector Erase
Program/Erase Suspend (Note 15)
Program/Erase Resume (Note 16)
CFI Query (Note 17)
See
command sequence, all bus cycles are write cycles.
as shown in table, address bits higher than A11 (except where BA
is required) and data bits higher than DQ7 are don’t cares.
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. Except RD, PD and
WC. See the
information.
top boot and 2200h for bottom boot.
factory locked and 18h for not factory locked. If WP# protects the
Manufacturer ID
Device ID (Note 8)
SecSi™ Sector Factory Protect
(Note 9)
Sector Group Protect Verify
(Note 10)
Command Sequence
Table 1
(Notes)
for description of bus operations.
Autoselect Command Sequence
1
1
4
6
4
4
3
4
4
6
1
3
3
2
2
6
6
1
1
1
A D V A N C E
Addr
XXX
XXX
XXX
555
555
555
555
555
555
555
555
555
555
555
555
RA
SA
BA
BA
55
First
section for more
Table 11. 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
Second
Am49LV6408M
I N F O R M A T I O N
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 A21–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.
10. The data is 00h for an unprotected sector group and 01h for a
11. The total number of cycles in the command sequence is
12. Command sequence resets device for next command after
13. The Unlock Bypass command is required prior to the Unlock
14. The Unlock Bypass Reset command is required to return to the
15. The system may read and program in non-erasing sectors, or
16. The Erase Resume command is valid only during the Erase
17. 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
bottom two address sectors, the data is 88h for factory locked and
08h for not factor locked.
protected sector group.
determined by the number of words written to the write buffer. The
maximum number of cycles in the command sequence is 21.
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 1–4)
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 9)
00/01
227E
Data
0001
WC
PD
AA
AA
00
Addr
X0E
2AA
2AA
PA
Fifth
2210
Data
PD
55
55
Addr
WBL
X0F
555
SA
Sixth
2200/
Data
2201
PD
10
30
33