參數(shù)資料
型號(hào)： M36WT864TFZA
廠商： 意法半導(dǎo)體
英文描述： 64 Mbit 4Mb x16, Multiple Bank, Burst Flash Memory and 8 Mbit 512K x16 SRAM, Multiple Memory Product
中文描述： 64兆位4Mb的x16插槽，多銀行，突發(fā)閃存和8兆位的SRAM為512k x16，內(nèi)存產(chǎn)品多
文件頁(yè)數(shù)： 28/92頁(yè)
文件大?。?/td> 624K
代理商： M36WT864TFZA
M36WT864TF, M36WT864BF
28/92
V
PPF
Lockout Voltage, V
PPLK
, the memory is pro-
tected and Program and Erase operations cannot
be performed.
Once set High, the V
PPF
Status bit can only be re-
set Low by a Clear Status Register command or a
hardware reset. If set High it should be reset be-
fore a new Program or Erase command is issued,
otherwise the new command will appear to fail.
Program Suspend Status Bit (SR2).
The Pro-
gram Suspend Status bit indicates that a Program
operation has been suspended in the addressed
block. When the Program Suspend Status bit is
High (set to ‘1’), a Program/Erase Suspend com-
mand has been issued and the memory is waiting
for a Program/Erase Resume command. The Pro-
gram Suspend Status should only be considered
valid when the Program/Erase Controller Status
bit is High (Program/Erase Controller inactive).
SR2 is set within the Program Suspend Latency
time of the Program/Erase Suspend command be-
ing issued therefore the memory may still com-
plete the operation rather than entering the
Suspend mode.
When a Program/Erase Resume command is is-
sued the Program Suspend Status bit returns Low.
Block Protection Status Bit (SR1).
The
Protection Status bit can be used to identify if a
Program or Block Erase operation has tried to
modify the contents of a locked block.
When the Block Protection Status bit is High (set
to ‘1’), a Program or Erase operation has been at-
tempted on a locked block.
Block
Once set High, the Block Protection Status bit can
only be reset Low by a Clear Status Register com-
mand or a hardware reset. If set High it should be
reset before a new command is issued, otherwise
the new command will appear to fail.
Bank Write/Multiple Word Program Status Bit
(SR0).
The Bank Write Status bit indicates wheth-
er the addressed bank is programming or erasing.
In Enhanced Factory Program mode the Multiple
Word Program bit shows if a Word has finished
programming or verifying depending on the phase.
The Bank Write Status bit should only be consid-
ered valid when the Program/Erase Controller Sta-
tus SR7 is Low (set to ‘0’).
When both the Program/Erase Controller Status bit
and the Bank Write Status bit are Low (set to ‘0’),
the addressed bank is executing a Program or
Erase operation. When the Program/Erase Con-
troller Status bit is Low (set to ‘0’) and the Bank
Write Status bit is High (set to ‘1’), a Program or
Erase operation is being executed in a bank other
than the one being addressed.
In Enhanced Factory Program mode if Multiple
Word Program Status bit is Low (set to ‘0’), the de-
vice is ready for the next Word, if the Multiple Word
Program Status bit is High (set to ‘1’) the device is
not ready for the next Word.
Note: Refer to Appendix C, Flowcharts and Pseu-
do Codes, for using the Status Register.
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