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參數(shù)資料
| 型號： | M30LW128D110N6T |
| 廠商： | 意法半導體 |
| 英文描述： | 128 Mbit (two 64Mbit, x8/x16, Uniform Block, Flash Memories) 3V Supply, Multiple Memory Product |
| 中文描述： | 128兆位（兩個64兆比特，x8/x16，統(tǒng)一座，快閃記憶體）3V電源，多記憶體產(chǎn)品 |
| 文件頁數(shù)： | 25/57頁 |
| 文件大?。?/td> | 860K |
| 代理商： | M30LW128D110N6T |
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M30LW128D
STATUS REGISTER
The Status Register provides information on the
current or previous Program, Erase, Block Protect
or Blocks Unprotect operation. The various bits in
the Status Register convey information and errors
on the operation. They are output on DQ7-DQ0.
To read the Status Register the Read Status Reg-
ister command can be issued. The Status Register
is automatically read after Program, Erase, Block
Protect, Blocks Unprotect and Program/Erase Re-
sume commands. As the device contains two Sta-
tus Registers (one for each internal memory) the
Status Register must be read at the same address
as the previous operation.
The contents of the Status Register can be updat-
ed during an Erase or Program operation by tog-
gling the Output Enable pin or by dis-activating
and then reactivating the device (refer to Table 3).
Status Register bits 5, 4, 3 and 1 are associated
with various error conditions and can only be reset
with the Clear Status Register command. The Sta-
tus Register bits are summarized in Table 11, Sta-
tus Register Bits. Refer to Table 11 in conjunction
with the following text descriptions.
Program/Erase Controller Status (Bit 7).
The Pro-
gram/Erase Controller Status bit indicates whether
the Program/Erase Controller is active or inactive.
When the Program/Erase Controller Status bit is
Low, V
OL
, the Program/Erase Controller is active
and all other Status Register bits are High Imped-
ance; when the bit is High, V
OH
, the Program/
Erase Controller is inactive.
The Program/Erase Controller Status is Low im-
mediately after a Program/Erase Suspend com-
mand is issued until the Program/Erase Controller
pauses. After the Program/Erase Controller paus-
es the bit is High.
During Program, Erase, Block Protect and Blocks
Unprotect operations the Program/Erase Control-
ler Status bit can be polled to find the end of the
operation. The other bits in the Status Register
should not be tested until the Program/Erase Con-
troller completes the operation and the bit is High.
After the Program/Erase Controller completes its
operation the Erase Status, Program Status and
Block Protection Status bits should be tested for
errors.
Erase Suspend Status (Bit 6).
The Erase Sus-
pend Status bit indicates that an Erase operation
has been suspended and is waiting to be re-
sumed. The Erase Suspend Status should only be
considered valid when the Program/Erase Con-
troller Status bit is High (Program/Erase Controller
inactive); after a Program/Erase Suspend com-
mand is issued the memory may still complete the
operation rather than entering the Suspend mode.
When the Erase Suspend Status bit is Low, V
OL
,
the Program/Erase Controller is active or has com-
pleted its operation; when the bit is High, V
OH
, a
Program/Erase Suspend command has been is-
sued and the memory is waiting for a Program/
Erase Resume command.
When a Program/Erase Resume command is is-
sued the Erase Suspend Status bit returns Low.
Erase Status (Bit 5).
The Erase Status bit can be
used to identify if the device has failed to verify that
the block has erased correctly or that all blocks
have been unprotected successfully. The Erase
Status bit should be read once the Program/Erase
Controller Status bit is High (Program/Erase Con-
troller inactive).
When the Erase Status bit is Low, V
OL
, the device
has successfully verified that the block has erased
correctly or all blocks have been unprotected suc-
cessfully. When the Erase Status bit is High, V
OH
,
the erase operation has failed. Depending on the
cause of the failure other Status Register bits may
also be set to High, V
OH
.
I
If only the Erase Status bit (bit 5) is set High,
V
OH
,
then the Program/Erase Controller has
applied the maximum number of pulses to the
block and still failed to verify that the block has
erased correctly or that all the blocks have been
unprotected successfully.
I
If the failure is due to an erase or blocks
unprotect with V
PEN
low, V
OL
, then V
PEN
Status
bit (bit 3) is also set High, V
OH
.
I
If the failure is due to an erase on a protected
block then Block Protection Status bit (bit 1) is
also set High, V
OH
.
I
If the failure is due to a program or erase
incorrect command sequence then Program
Status bit (bit 4) is also set High, V
OH
.
Once set High, the Erase 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 Status (Bit 4).
The Program Status bit
is used to identify a Program or Block Protect fail-
ure. The Program Status bit should be read once
the Program/Erase Controller Status bit is High
(Program/Erase Controller inactive).
When the Program Status bit is Low, V
OL
, the de-
vice has successfully verified that the Write Buffer
has programmed correctly or the block is protect-
ed. When the Program Status bit is High, V
OH
, the
program or block protect operation has failed. De-
pending on the cause of the failure other Status
Register bits may also be set to High, V
OH
.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
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| M30LW128D110ZA1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128 Mbit (two 64Mbit, x8/x16, Uniform Block, Flash Memories) 3V Supply, Multiple Memory Product |
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| M30LW128D-110ZA6 | 制造商:STMicroelectronics 功能描述: |
| M30LW128D110ZA6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128 Mbit (two 64Mbit, x8/x16, Uniform Block, Flash Memories) 3V Supply, Multiple Memory Product |
| M30LW128D110ZE1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:128 Mbit (two 64Mbit, x8/x16, Uniform Block, Flash Memories) 3V Supply, Multiple Memory Product |
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