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參數資料
| 型號： | LRS1338A |
| 廠商： | Sharp Corporation |
| 英文描述： | Stacked Chip 8M Flash Memory and 2M SRAM |
| 中文描述： | 堆疊芯片800萬快閃記憶體以及2M SRAM |
| 文件頁數： | 17/36頁 |
| 文件大?。?/td> | 218K |
| 代理商： | LRS1338A |
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Stacked Chip (8M Flash & 2M SRAM)
LRS1338A
Data Sheet
17
WORD WRITE SUSPEND COMMAND
The Word Write Suspend command allows word
write interruption to read data in other flash memory
locations. Once the word write process starts, writing the
Word Write Suspend command requests that the WSM
suspend the word write sequence at a predetermined
point in the algorithm. The device continues to output
status register data when read after the Word Write Sus-
pend command is written. Polling status register bits
SR.7 and SR.2 can determine when the word write oper-
ation has been suspended (both will be set to
‘
1
’
). Spec-
ification t
WHRH1
defines the word write suspend latency.
At this point a Read Array command can be written
to read data from locations other than that which is sus-
pended. The only other valid commands while word
write is suspended are Read Status Register and Word
Write Resume. After Word Write Resume command is
written to the flash memory, the WSM will continue the
word write process. Status register bits SR.2 and SR.7
will automatically clear. After the Word Write Resume
command is written, the device automatically outputs
status register data when read (see Figure 9). V
PP
must remain at V
PPH
(the same V
PP
level used for word
write) while in word write suspend mode. RP must also
remain at V
IH
or V
HH
(the same RP level used for word
write). WP must also remain V
IL
or V
IH
(the same WP
level used for word write).
Figure 9. Word Write Suspend/Resume Flowchart
Start
BUS
OPERATION
COMMAND
COMMENTS
Read
Status Register
SR.7 =
0
0
1
Write B0H
Write D0H
Write FFH
Write
Write
Read
Standby
Standby
Write
Read
Word Write
Suspend
Read
Array
Word Write
Resume
Data = B0H
Addr = X
Data = FFH
Addr = X
Read Array locations other
than that being written
Data = D0H
Addr = X
Status Register Data
Addr = X
Check SR.7
1 = WSM Ready
0 = WSM Busy
Check SR.2
1 = Word Write Suspended
0 = Word Write Completed
LRS1338A-9
SR.2 =
1
No
Yes
Done
Reading
Read Array Data
Write FFH
Read Array Data
Word Write
Resumed
Word
Write Completed
相關PDF資料 |
PDF描述 |
|---|---|
| LRS1341 | Stacked Chip 16M Flash Memory and 2M SRAM |
| LRS1805A | Stacked Chip 64M (x16) Flash Memory + 16M (x16) Smartcombo RAM |
| LRS250 | LIGHT EMITTING DIODES |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LRS1341 | 制造商:SHARP 制造商全稱:Sharp Electrionic Components 功能描述:Stacked Chip 16M Flash Memory and 2M SRAM |
| LRS1342 | 制造商:Sharp Microelectronics Corporation 功能描述:COMBO 1MX16 FLASH + 128KX16 SRAM 2.7V TO 3.6V 72FBGA - Trays |
| LRS1348 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Flash ROM |
| LRS1360 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Flash ROM |
| LRS1360C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MIXED MEMORY|SRAM+EEPROM|HYBRID|BGA|72PIN|PLASTIC |
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