參數(shù)資料
型號： S29GL032A90TAIR21
廠商： Spansion Inc.
英文描述： 64 MEGABIT 32MEGABIT 3.0 BOLT ONLY PAGE MODE FLASH MEMORY
中文描述： 64兆位32MEGABIT 3.0螺栓只頁面模式閃存
文件頁數(shù)： 51/88頁
文件大?。?/td> 1425K
代理商： S29GL032A90TAIR21
January 28, 2005 S29GLxxxA_00_A2
S29GLxxxA MirrorBit Flash Family
53
Advance
Information
Notes:
1. See Table 25 and Table 26 for program command sequence.
2. See the section on DQ3 for information on the sector erase timer.
Figure 6. Erase Operation
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. This command is valid only during the sector erase operation, includ-
ing 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.
When the Erase Suspend command is written during the sector erase operation,
the device requires a typical of 5 s (maximum of 20 s) to suspend the erase
operation. However, when the Erase Suspend command is written during the sec-
tor erase time-out, the device immediately terminates the time-out period and
suspends the erase operation.
After the erase operation has been suspended, the device enters the erase-sus-
pend-read mode. The system can read data from or program data to any sector
not selected for erasure. (The device “erase suspends” all sectors selected for
erasure.) Reading at any address within erase-suspended sectors produces sta-
tus 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 information on these status bits.
After an erase-suspended program operation is complete, the device returns to
the erase-suspend-read mode. The system can determine the status of the pro-
gram operation using the DQ7 or DQ6 status bits, just as in the standard word
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
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