AM29LV256MH113REI AMD (ADVANCED MICRO DEVICES), AM29LV256MH113REI Datasheet - Page 38

• Manufacturer Part Number: AM29LV256MH113REI
• Description: Flash Memory IC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM29LV256MH113REI

• Memory Size: 256Mbit
• Package/case: 56-TSOP
• Access Time, Tacc: 110nS
• Mounting Type: Surface Mount
• Supply Voltage: 3V

36
DQ1 = 1?
No
Yes
(Note 3)
(Note 1)
Yes
(Note 2)
No
Write next address/data pair
Write number of addresses
to program minus 1(WC)
Write first address/data
Write program buffer to
Read DQ15 - DQ0 with
Write “Write to Buffer”
DQ7 and DQ15 = Data?
DQ7 and DQ15 = Data?
address = Last Loaded
Read DQ15 - DQ0 at
Last Loaded Address
flash sector address
DQ5 and DQ13 = 1?
and Sector Address
Buffer Operation?
command and
Sector Address
FAIL or ABORT
Abort Write to
WC = WC - 1
Figure 4. Write Buffer Programming Operation
WC = 0 ?
Address
Yes
No
No
No
No
D A T A S H E E T
Yes
Yes
Yes
Am29LV256M
Part of “Write to Buffer”
Command Sequence
Must write “Write-to-buffer
Write to buffer ABORTED.
Abort Reset” command
Write to a different
sequence to return
sector address
to read mode.
PASS
Notes:
1.
2. DQ7 may change simultaneously with DQ5.
3. If this flowchart location was reached because
4.
When Sector Address is specified, any address in
the selected sector is acceptable. However, when
loading Write-Buffer address locations with data, all
addresses must fall within the selected Write-Buffer
Page.
Therefore, DQ7 should be verified.
DQ5= “1”, then the device FAILED. If this flowchart
location was reached because DQ1= “1”, then the
Write to Buffer operation was ABORTED. In either
case, the proper reset command must be written
before the device can begin another operation. If
DQ1=1, write the
Write-Buffer-Programming-Abort-Reset
command. if DQ5=1, write the Reset command.
See Tables
required for write buffer programming.
11
and
12
for command sequences
December 16, 2005