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参数资料
| 型号： | S29AL008D90MAI010 |
| 厂商： | SPANSION LLC |
| 元件分类： | PROM |
| 英文描述： | 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| 中文描述： | 512K X 16 FLASH 3V PROM, 90 ns, PDSO44 |
| 封装： | MO-180AAA, SOP-44 |
| 文件页数： | 18/52页 |
| 文件大小： | 2004K |
| 代理商： | S29AL008D90MAI010 |
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February 27, 2009 S29AL008D_00_A11
S29AL008D
25
Data
She e t
8.8
Erase Suspend/Erase Resume Commands
The Erase Suspend command allows the system 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 sector
erase operation, including the 50 s time-out period during the sector erase command sequence. The Erase
Suspend command is ignored if written during the chip erase operation or Embedded Program algorithm.
Writing the Erase Suspend command during the Sector Erase time-out immediately terminates the time-out
period and suspends the erase operation. Addresses are don’t-cares when writing the Erase Suspend
command.
When the Erase Suspend command is written during a sector erase operation, the device requires a
maximum of 20 s to suspend the erase operation. However, when the Erase Suspend command is written
during the sector erase time-out, the device immediately terminates the time-out period and suspends the
erase operation.
After the erase operation is suspended, the system can read array data from or program data to any sector
not selected for erasure. (The device erase suspends all sectors selected for erasure.) Normal read and write
timings and command definitions apply. Reading at any address within erase-suspended sectors produces
status data 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. See Write Operation Status on page 27 for information on these
status bits.
After an erase-suspended program operation is complete, the system can once again read array data within
non-suspended sectors. The system can determine the status of the program operation using the DQ7 or
DQ6 status bits, just as in the standard program operation. See Write Operation Status on page 27 for more
information.
The system may also write the autoselect command sequence when the device is in the Erase Suspend
mode. The device allows reading autoselect codes even at addresses within erasing sectors, since the codes
are not stored in the memory array. When the device exits the autoselect mode, the device reverts to the
Erase Suspend mode, and is ready for another valid operation. See Autoselect Command Sequence
on page 22 for more information.
The system must write the Erase Resume command (address bits are don’t care) to exit the erase suspend
mode and continue the sector erase operation. Further writes of the Resume command are ignored. Another
Erase Suspend command can be written after the device resumes erasing.
Figure 8.2 Erase Operation
Notes
1. See Table 8.1 on page 26 for erase command sequence.
2. See DQ3: Sector Erase Timer on page 30 for more information.
START
Write Erase
Command Sequence
Data Poll
from System
Data = FFh?
No
Yes
Erasure Completed
Embedded
Erase
algorithm
in progress
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S29AL008D90MAI011 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| S29AL008D90MAI012 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| S29AL008D90MAI013 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| S29AL008D90MAI020 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
| S29AL008D90MAI021 | 制造商:SPANSION 制造商全称:SPANSION 功能描述:8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory |
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