AM29LV400BT-70SC Spansion Inc., AM29LV400BT-70SC Datasheet - Page 21

• Manufacturer Part Number: AM29LV400BT-70SC
• Manufacturer: Spansion Inc.

Specifications of AM29LV400BT-70SC

• Cell Type: NOR
• Density: 4Mb
• Access Time (max): 70ns
• Interface Type: Parallel
• Boot Type: Top
• Address Bus: 19/18Bit
• Operating Supply Voltage (typ): 3/3.3V
• Operating Temp Range: 0C to 70C
• Package Type: SOIC
• Program/erase Volt (typ): 2.7 to 3.6V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 512K/256K
• Supply Current: 12mA
• Mounting: Surface Mount
• Pin Count: 44
• Lead Free Status / Rohs Status: Not Compliant

Command Definitions
Legend:
X = Don’t care
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
PA = Address of the memory location to be programmed.
Addresses latch on the falling edge of the WE# or CE# pulse,
whichever happens later.
Notes:
1. See Table 1 for description of bus operations.
2. All values are in hexadecimal.
3. Except when reading array or autoselect data, all bus cycles
4. Data bits DQ15–DQ8 are don’t cares for unlock and command
5. Address bits A17–A11 are don’t cares for unlock and
6. No unlock or command cycles required when reading array
7. The Reset command is required to return to reading array data
13. The Erase Resume command is valid only during the Erase Suspend mode.
December 4, 2006 21523D4
Read (Note 6)
Reset (Note 7)
Program
Unlock Bypass
Unlock Bypass Program (Note 10)
Unlock Bypass Reset (Note 11)
Chip Erase
Sector Erase
Erase Suspend (Note 12)
Erase Resume (Note 13)
are write operations.
cycles.
command cycles, except when SA or PA required.
data.
when device is in the autoselect mode, or if DQ5 goes high
(while the device is providing status data).
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
Sector Protect Verify
(Note 9)
Command
Sequence
(Note 1)
Word
Word
Word
Word
Word
Word
Word
Word
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Byte
Table 5. Am29LV400B Command Definitions
1
1
4
4
4
4
4
3
2
2
6
6
1
1
Addr
AAA
XXX
XXX
XXX
AAA
AAA
AAA
AAA
AAA
AAA
AAA
XXX
XXX
555
555
555
555
555
555
555
555
RA
First
Data
RD
AA
AA
AA
AA
AA
AA
AA
AA
D A T A
F0
A0
B0
90
30
Addr
XXX
2AA
2AA
2AA
2AA
2AA
2AA
2AA
2AA
Am29LV400B
555
555
555
555
555
555
555
555
PA
Second
Data
S H E E T
PD
55
55
55
55
55
55
00
55
55
PD = Data to be programmed at location PA. Data latches on the
rising edge of WE# or CE# pulse, whichever happens first.
SA = Address of the sector to be verified (in autoselect mode) or
erased. Address bits A17–A12 uniquely select any sector.
8. The fourth cycle of the autoselect command sequence is a
9. The data is 00h for an unprotected sector and 01h for a
10. The Unlock Bypass command is required prior to the Unlock
11. The Unlock Bypass Reset command is required to return to
12. The system may read and program in non-erasing sectors, or
read cycle.
protected sector. See “Autoselect Command Sequence” for
more information.
Bypass Program command.
reading array data 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.
Addr
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
555
555
555
555
555
555
555
555
Bus Cycles (Notes 2–5)
Third
Data
90
90
90
90
A0
20
80
80
Addr
(SA)
(SA)
AAA
AAA
X00
X01
X02
X01
X02
X02
X04
555
555
PA
Fourth
22BA
XX00
XX01
22B9
Data
BA
PD
AA
AA
01
B9
00
01
Addr
2AA
2AA
555
555
Fifth
Data
55
55
Addr
AAA
555
SA
Sixth
Data
10
30
19