AM29LV128MH123REI Spansion Inc., AM29LV128MH123REI Datasheet - Page 29

• Manufacturer Part Number: AM29LV128MH123REI
• Manufacturer: Spansion Inc.

Specifications of AM29LV128MH123REI

• Cell Type: NOR
• Density: 128Mb
• Access Time (max): 120ns
• Interface Type: Parallel
• Boot Type: Not Required
• Address Bus: 24/23Bit
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Program/erase Volt (typ): 3/11.5 to 12.5V
• 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: 16M/8M
• Supply Current: 43mA
• Mounting: Surface Mount
• Pin Count: 56
• Lead Free Status / Rohs Status: Not Compliant

COMMAND DEFINITIONS
Writing specific address and data commands or se-
quences into the command register initiates device op-
erations.
register command sequences. Writing incorrect ad-
dress and data values or writing them in the improper
sequence may place the device in an unknown state.
A reset command is then required to return the device
to reading array data.
All addresses are latched on the falling edge of WE#
or CE#, whichever happens later. All data is latched on
the rising edge of WE# or CE#, whichever happens
first. See
agrams.
Reading Array Data
The device is “automatically set to reading array data
after device power-up. No commands are required to
retrieve data. The device is ready to read array data
after completing an Embedded Program or Embedded
Erase algorithm.
After the device accepts an Erase Suspend command,
the device enters the erase-suspend-read mode, after
w h i c h t h e s y s t e m c a n r e a d d a t a f r o m a n y
non-erase-suspended sector. After completing a pro-
gramming operation in the Erase Suspend mode, the
system may once again read array data with the same
exception. See
mands”
The system must issue the reset command to return
the device to the read (or erase-suspend-read) mode if
DQ5 goes high during an active program or erase op-
eration, or if the device is in the autoselect mode. See
the next section,
tion.
See
Bus Operations
table,
parameters, and
Reset Command
Writing the reset command resets the device to the
read or erase-suspend-read mode. Address bits are
don’t cares for this command.
The reset command may be written between the se-
quence cycles in an erase command sequence before
erasing begins. This resets the device to the read
mode. Once erasure begins, however, the device ig-
nores reset commands until the operation is complete.
The reset command may be written between the
sequence cycles in a program command sequence
before programming begins. This resets the device to
the read mode. If the program command sequence is
January 31, 2007 25270C7
“Reading Array Data”
“Read-Only Operations”
on page 35 for more information.
“AC Characteristics”
Table 10
“Erase Suspend/Erase Resume Com-
section for more information. “See the
Figure 14
“Reset
and
Command,” for more informa-
Table 11
shows the timing diagram.
on page 29 in the
on page 47 for timing di-
on page 47 for the read
defines the valid
D A T A
Device
Am29LV128MH/L
S H E E T
written while the device is in the Erase Suspend mode,
writing the reset command returns the device to the
erase-suspend-read mode. Once programming be-
gins, however, the device ignores reset commands
until the operation is complete.
The reset command may be written between the se-
quence cycles in an autoselect command sequence.
Once in the autoselect mode, the reset command
must be written to return to the read mode. If the de-
vice entered the autoselect mode while in the Erase
Suspend mode, writing the reset command returns the
device to the erase-suspend-read mode.
If DQ5 goes high during a program or erase operation,
writing the reset command returns the device to the
read mode (or erase-suspend-read mode if the device
was in Erase Suspend).
Note that if DQ1 goes high during a Write Buffer Pro-
gramming operation, the system must write the
Write-to-Buffer-Abort Reset command sequence to
reset the device for the next operation.
Autoselect Command Sequence
The autoselect command sequence allows the host
system to access the manufacturer and device codes,
and determine whether or not a sector is protected.
Table 10
quirements. This method is an alternative to that
shown in
grammers and requires V
autoselect command sequence may be written to an
a d d r e s s
erase-suspend-read mode. The autoselect command
may not be written while the device is actively pro-
gramming or erasing.
The autoselect command sequence is initiated by first
writing two unlock cycles. This is followed by a third
write cycle that contains the autoselect command. The
device then enters the autoselect mode. The system
may read at any address any number of times without
initiating another autoselect command sequence:
The system must write the reset command to return to
the read mode (or erase-suspend-read mode if the de-
vice was previously in Erase Suspend).
A read cycle at address XX00h returns the manu-
facturer code.
Three read cycles at addresses 01h, 0Eh, and 0Fh
return the device code.
A read cycle to an address containing a sector ad-
dress (SA), and the address 02h on A7–A0 in word
mode returns 01h if the sector is protected, or 00h if
it is unprotected.
and
Table
t h a t
Table 11
3, which is intended for PROM pro-
i s
show the address and data re-
e i t h e r
ID
on address pin A9. The
i n
t h e
r e a d
29
o r