AM29LV640MB90REI Spansion Inc., AM29LV640MB90REI Datasheet - Page 39

• Manufacturer Part Number: AM29LV640MB90REI
• Manufacturer: Spansion Inc.

Specifications of AM29LV640MB90REI

• Cell Type: NOR
• Density: 64Mb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 23/22Bit
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Program/erase Volt (typ): 3 to 3.6V
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 8M/4M
• Supply Current: 20mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Not Compliant

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 AAAh
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 01h for
9. If WP# protects the top two address sectors, the data is 98h for
February 1, 2007 26190C8
Read
Reset
Enter Secured Silicon Sector Region
Exit Secured Silicon Sector Region
Program
Write to Buffer
Program Buffer to Flash
Write to Buffer Abort Reset
Unlock Bypass
Unlock Bypass Program
Unlock Bypass Reset
Chip Erase
Sector Erase
Program/Erase Suspend
Program/Erase Resume
CFI Query
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. See
Command Sequence on page 28
top boot and 00h for bottom boot
factory locked and 18h for not factory locked. If WP# protects the
bottom two address sectors, the data is 88h for factory locked and
08h for not factor locked.
Manufacturer ID
Device ID
Secured Silicon Sector Factory
Protect
Sector Group Protect Verify
(Note 10)
(Note 5)
(Note 6)
Command Sequence
Table 1
(Note 17)
(Note 9)
(Notes)
(Note 11)
for description of bus operations.
(Note 8)
(Note 14)
(Note 13)
(Note 16)
(Note 15)
(Note 12)
Table 13. Command Definitions (x8 Mode, BYTE# = V
for more information.
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
First
Autoselect
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
Addr
XXX
555
555
555
555
555
555
555
555
555
555
555
555
Am29LV640MT/B
PA
Second
Data
PD
55
55
55
55
55
55
55
55
55
55
00
55
55
S H E E T
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.
BC = Byte 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 can 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
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
SA
protected sector group.
determined by the number of bytes written to the write buffer. The
maximum number of cycles in the command sequence is 37,
including "Program Buffer to Flash" command.
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)X04
Addr
XXX
AAA
AAA
X00
X02
X06
SA
PA
Fourth
(Note 9)
00/01
Data
PD
BC
AA
7E
AA
01
00
IL
)
Addr
X1C
555
555
PA
Fifth
Data
PD
10
55
55
Addr
WBL
AAA
X1E
SA
Sixth
00/01
Data
PD
30
10
37