參數(shù)資料
型號： S29JL032H90TAI223
廠商： ADVANCED MICRO DEVICES INC
元件分類： PROM
英文描述： 2M X 16 FLASH 3V PROM, 90 ns, PDSO48
封裝： MO-142DD, TSOP-48
文件頁數(shù)： 41/66頁
文件大?。?/td> 1691K
代理商： S29JL032H90TAI223
44
S29JL032H
S29JL032H_00A11 March 10, 2005
Advan ce
In form ati o n
apply to the chip erase command.) If additional sectors are selected for erasure,
the entire time-out also applies after each additional sector erase command.
When the time-out period is complete, DQ3 switches from a “0” to a “1.” If the
time between additional sector erase commands from the system can be as-
sumed to be less than 50 s, the system need not monitor DQ3. See also the
After the sector erase command is written, the system should read the status of
DQ7 (Data# Polling) or DQ6 (Toggle Bit I) to ensure that the device has accepted
the command sequence, and then read DQ3. If DQ3 is “1,” the Embedded Erase
algorithm has begun; all further commands (except Erase Suspend) are ignored
until the erase operation is complete. If DQ3 is “0,” the device will accept addi-
tional sector erase commands. To ensure the command has been accepted, the
system software should check the status of DQ3 prior to and following each sub-
sequent sector erase command. If DQ3 is high on the second status check, the
last command might not have been accepted.
Table 14 shows the status of DQ3 relative to the other status bits.
Table 14. Write Operation Status
Notes:
1. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation has exceeded the maximum timing
limits. Refer to the section on DQ5 for more information.
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further
details.
3. When reading write operation status bits, the system must always provide the bank address where the Embedded
Algorithm is in progress. The device outputs array data if the system addresses a non-busy bank.
Status
DQ7
DQ6
DQ5
DQ3
DQ2
RY/BY#
Standard
Mode
Embedded Program Algorithm
DQ7#
Toggle
0
N/A
No toggle
0
Embedded Erase Algorithm
0
Toggle
0
1
Toggle
0
Erase
Suspend
Mode
Erase-Suspend-
Read
Erase
Suspended Sector
1
No toggle
0
N/A
Toggle
1
Non-Erase
Suspended Sector
Data
1
Erase-Suspend-Program
DQ7#
Toggle
0
N/A
0
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