AM29LV640MH SPANSION [SPANSION], AM29LV640MH Datasheet - Page 36

• 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]

34
Read (Note 6)
Reset (Note 7)
Enter SecSi Sector Region
Exit SecSi Sector Region
Program
Write to Buffer (Note 12)
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)
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.
9.
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 AAA as shown in table, address bits above A11 are don’t
care.
Unless otherwise noted, address bits A21–A11 are don’t cares.
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 autoselect command sequence is a read cycle.
Data bits DQ15–DQ8 are don’t care. See
Sequence
Device ID must be read in three cycles.
Manufacturer ID
Device ID (Note 9)
SecSi™ Sector Factory Protect
(Note 10)
Sector Group Protect Verify
(Note 11)
Table 1
Command
Sequence
(Note 1)
section or more information.
for description of bus operations.
Table 9. Command Definitions (x8 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
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
XXX
XXX
AAA
AAA
XXX
XXX
RA
SA
AA
Autoselect Command
First
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
555
555
555
555
555
555
555
555
555
555
555
555
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.
BC = Byte Count. Number of write buffer locations to load minus 1.
10. If WP# protects highest address sector, data is 98h for factory
11. Data is 00h for an unprotected sector group and 01h for a
12. Total number of cycles in command sequence is determined by
13. Command sequence resets device for next command after
14. Unlock Bypass command is required prior to Unlock Bypass
15. Unlock Bypass Reset command is required to return to read
16. System may read and program in non-erasing sectors, or enter
17. Erase Resume command is valid only during Erase Suspend
Addr
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
SA
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 bytes written to write buffer. Maximum number of
cycles in command sequence is 37, 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)X04
Addr
XXX
AAA
AAA
X00
X02
X06
SA
PA
Fourth
(Note 10)
00/01
Data
PD
BC
AA
AA
7E
01
00
IL
)
Addr
X1C
555
555
PA
December 14, 2005
Fifth
Data
PD
0C
55
55
Addr
WBL
AAA
X1E
SA
Sixth
Data
PD
01
10
30