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参数资料
| 型号： | AM29DL162CB120ZEN |
| 厂商： | SPANSION LLC |
| 元件分类： | PROM |
| 英文描述： | 1M X 16 FLASH 3V PROM, 120 ns, PDSO56 |
| 封装： | SSOP-56 |
| 文件页数： | 21/55页 |
| 文件大小： | 775K |
| 代理商： | AM29DL162CB120ZEN |
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26
Am29DL16xC
September 7, 2007 21533C2
D A TA
SH EE T
Once the sector erase operation has begun, 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 that bank has returned to
reading array data, to ensure data integrity.
Figure 4 illustrates the algorithm for the erase opera-
tion. Refer to the Erase and Program Operations ta-
bles in the AC Characteristics section for parameters,
and Figure 19 section for timing diagrams.
Erase Suspend/Erase Resume
Commands
The Erase Suspend command, B0h, allows the system to
interrupt a sector erase operation and then read data from,
or program data to, any sector not selected for erasure. The
bank address is required when writing this command. This
command is valid only during the sector erase operation, in-
cluding the 50 s time-out period during the sector erase
command sequence. The Erase Suspend command is ig-
nored if written during the chip erase operation or Embed-
ded Program algorithm.
When the Erase Suspend command is written during
the sector erase operation, the device requires a max-
imum of 20 s 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 has been suspended, the
bank enters the erase-suspend-read mode. The sys-
tem can read data from or program data to any sector
not selected for erasure. (The device “erase sus-
pends” all sectors selected for erasure.) Reading at
any address within erase-suspended sectors pro-
duces status information on DQ7–DQ0. The system
can use DQ7, or DQ6 and DQ2 together, to determine
if a sector is actively erasing or is erase-suspended.
Refer to the Write Operation Status section for infor-
mation on these status bits.
After an erase-suspended program operation is complete,
the bank returns to the erase-suspend-read mode. The sys-
tem 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 the Write Operation Sta-
tus section for more information.
In the erase-suspend-read mode, the system can also
issue the autoselect command sequence. Refer to the
sections for details.
To resume the sector erase operation, the system must
write the Erase Resume command. The bank address of
the erase-suspended bank is required when writing this
command. Further writes of the Resume command are ig-
nored. Another Erase Suspend command can be written
after the chip has resumed erasing.
Figure 4.
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 for erase command sequence.
2. See the section on DQ3 for information on the sector
erase timer.
Notes:
1. See Table 14 for erase command sequence.
2. See the section on DQ3 for information on the sector
erase timer.
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相关代理商/技术参数 |
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| AM29DL163DB-90EI\\T | 制造商:Spansion 功能描述:FLASH PARALLEL 3V/3.3V 16MBIT 2MX8/1MX16 90NS 48TSOP - Tape and Reel |
| AM29DL163DB-90EI\T | 制造商:Spansion 功能描述:FLASH PARALLEL 3V/3.3V 16MBIT 2MX8/1MX16 90NS 48TSOP - Tape and Reel |
| AM29DL163DB-90EIT | 制造商:Spansion 功能描述:FLASH PARALLEL 3V/3.3V 16MBIT 2MX8/1MX16 90NS 48TSOP - Tape and Reel |
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