參數(shù)資料
型號(hào)： AM29LV320DB90EI
廠商： ADVANCED MICRO DEVICES INC
元件分類： PROM
英文描述： 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory
中文描述： 2M X 16 FLASH 3V PROM, 90 ns, PDSO48
封裝： MO-142B, TSOP-48
文件頁(yè)數(shù)： 30/57頁(yè)
文件大小： 636K
代理商： AM29LV320DB90EI
28
Am29LV320D
December 14, 2005
D A T A S H E E T
DQ2, or RY/BY# in the erasing sector. Refer to “Write
Operation Status” on page 30 for information on these
status bits.
Once the sector erase operation begins, only the
Erase Suspend command is valid. All other com-
mands are ignored. However, note that a
hardware
reset
immediately
terminates the erase operation. If
that occurs, the sector erase command sequence
should be reinitiated once the device returns to read-
ing array data, to ensure data integrity.
Figure 5, on page 28
illustrates the algorithm for the
erase operation. Refer to table “Erase and Program
Operations” on page 41 for parameters, and
Figure
19, on page 43
for timing diagrams.
Erase Suspend/Erase Resume
Commands
The Erase Suspend command, B0h, allows the sys-
tem to interrupt a sector erase operation and then read
data from, or program data to, any sector not selected
for erasure. This command is valid only during the sec-
tor erase operation, including the 50 μs time-out pe-
riod during the sector erase command sequence. The
Erase Suspend command is ignored if written during
the chip erase operation or Embedded Program
algorithm.
When the Erase Suspend command is written during
the sector erase operation, the device requires a max-
imum of 20 μs to suspend the erase operation. How-
ever, when the Erase Suspend command is written
during the sector erase time-out, the device immedi-
ately terminates the time-out period and suspends the
erase operation.
After the erase operation is suspended, the device en-
ters the erase-suspend-read mode. The system can
read data from or program data to any sector not se-
lected for erasure. (The device “erase suspends” all
sectors selected for erasure.) Reading at any address
within erase-suspended sectors produces status infor-
mation on DQ7–DQ0. The system can use DQ7, or
DQ6 and DQ2 together, to determine if a sector is ac-
tively erasing or is erase-suspended. Refer to the
“Write Operation Status” on page 30 section for infor-
mation on these status bits.
After an erase-suspended program operation is com-
plete, the device returns to the erase-suspend-read
mode. The system can determine the status of the
program operation using the DQ7 or DQ6 status bits,
just as in the standard Byte Program operation.
Refer to “Write Operation Status” on page 30 for more
information.
In the erase-suspend-read mode, the system can also
issue the autoselect command sequence. Refer to
“Autoselect Mode” on page 16 and “Autoselect Com-
mand Sequence” on page 25 for details.
To resume the sector erase operation, the system
must write the Erase Resume command. Further
writes of the Resume command are ignored. Another
Erase Suspend command can be written after the chip
resumes erasing.
Figure 5.
Erase Operation
START
Write Erase
Command Sequence
(Notes 1, 2)
Data Poll to Erasing
Bank from System
Data = FFh
No
Yes
Erasure Completed
Embedded
Erase
algorithm
in progress
Notes:
1. See Table 14 on page 29 for erase command sequence.
2. See the section on DQ3 for information on the sector
erase timer.
相關(guān)PDF資料
PDF描述
AM29LV320DB120ED 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory
AM29LV320DB120EF 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory
AM29LV320DB120EI 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory
AM29LV320DB120EV 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory
AM29LV320DB120EY 32 Megabit (4 M x 8-Bit/2 M x 16-Bit) CMOS 3.0 Volt-only, Boot Sector Flash Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM29LV320DB-90EI 制造商:Advanced Micro Devices 功能描述:NOR Flash, 2M x 16, 48 Pin, Plastic, TSSOP
AM29LV320DB-90EI ES 制造商:Advanced Micro Devices 功能描述:IC,EEPROM,NOR FLASH,2MX16/4MX8,CMOS,TSSOP,48PIN,PLASTIC
AM29LV320DB90EI/T 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP T/R
AM29LV320DB-90WMF 制造商:Spansion 功能描述:2M X 16 FLASH 3V PROM, 90 ns, PBGA48
Am29LV320DB90WMI 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin FBGA 制造商:Advanced Micro Devices 功能描述:
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