AM29LV640MH SPANSION [SPANSION], AM29LV640MH Datasheet - Page 35

• Manufacturer Part Number: AM29LV640MH
• Description: 64 Megabit (4 M x 16-Bit/8 M x 8-Bit) MirrorBit 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O Control
• Manufacturer: SPANSION [SPANSION]

Command Definitions
December 14, 2005
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)
Legend:
X = Don’t care
RA = Read Address of memory location to be read.
RD = Read Data read from location RA during read operation.
PA = Program Address . Addresses latch on falling edge of WE# or
CE# pulse, whichever happens later.
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
See
All values are in hexadecimal.
Shaded cells indicate read cycles. All others are write cycles.
During unlock and command cycles, when lower address bits are
555 or 2AA as shown in table, address bits above A11 and data
bits above DQ7 are don’t care.
No unlock or command cycles required when device is in read
mode.
Reset command is required to return to read mode (or to
erase-suspend-read mode if previously in Erase Suspend) when
device is in autoselect mode, or if DQ5 goes high while device is
providing status information.
Fourth cycle of the autoselect command sequence is a read
cycle. Data bits DQ15–DQ8 are don’t care. Except for RD, PD
and WC. See
information.
Device ID must be read in three cycles.
Manufacturer ID
Device ID (Note 8)
SecSi™ Sector Factory Protect
(Note 9)
Sector Group Protect Verify
(Note 10)
Table 1
Command
Sequence
(Note 1)
for description of bus operations.
Autoselect Command Sequence
Table 8. Command Definitions (x16 Mode, BYTE# = V
1
1
4
6
4
4
3
4
4
6
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
section for more
Data
RD
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
AA
F0
29
A0
90
B0
30
98
D A T A S H E E T
Addr
XXX
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
Am29LV640MH/L
PA
Second
Data
PD
55
55
55
55
55
55
55
55
55
55
00
55
55
PD = Program Data for location PA. Data latches on rising edge of
WE# or CE# pulse, whichever happens first.
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 same write
buffer page as PA.
WC = Word Count. Number of write buffer locations to load minus 1.
9.
10. Data is 00h for an unprotected sector group and 01h for a
11. Total number of cycles in command sequence is determined by
12. Command sequence resets device for next command after
13. Unlock Bypass command is required prior to Unlock Bypass
14. Unlock Bypass Reset command is required to return to read
15. System may read and program in non-erasing sectors, or enter
16. Erase Resume command is valid only during Erase Suspend
Addr
555
555
555
555
555
555
555
555
555
555
555
SA
If WP# protects highest address sector, data is 98h for factory
locked and 18h for not factory locked. If WP# protects lowest
address sector, data is 88h for factory locked and 08h for not
factor locked.
protected sector group.
number of words written to write buffer. Maximum number of
cycles in command sequence is 21, including "Program Buffer to
Flash" command.
aborted write-to-buffer operation.
Program command.
mode when device is in unlock bypass mode.
autoselect mode, when in Erase Suspend mode. Erase Suspend
command is valid only during a sector erase operation.
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
IH
)
Addr
X0E
2AA
2AA
PA
Fifth
220C
Data
PD
55
55
Addr
WBL
X0F
555
SA
Sixth
2201
Data
PD
10
30
33