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參數(shù)資料
| 型號： | S71AL016D02-B7 |
| 廠商： | Spansion Inc. |
| 英文描述： | Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| 中文描述： | 堆疊式多芯片產(chǎn)品（MCP）的閃存和RAM |
| 文件頁數(shù)： | 28/76頁 |
| 文件大?。?/td> | 909K |
| 代理商： | S71AL016D02-B7 |
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28
S29AL016D
S29AL016D_00_A1_E August 4, 2004
A d v a n c e I n f o r m a t i o n
Table
9
shows the address and data requirements. This method is an alternative
to that shown in Table
4
, which is intended for PROM programmers and requires
V
ID
on address bit A9.
The autoselect command sequence is initiated by writing two unlock cycles, fol-
lowed by the autoselect command. The device then enters the autoselect mode,
and the system may read at any address any number of times, without initiating
another command sequence.
A read cycle at address XX00h retrieves the manufacturer code. A read cycle at
address XX01h returns the device code. A read cycle containing a sector address
(SA) and the address 02h in word mode (or 04h in byte mode) returns 01h if that
sector is protected, or 00h if it is unprotected. Refer to Tables
2
and
3
for valid
sector addresses.
The system must write the reset command to exit the autoselect mode and return
to reading array data.
Word/Byte Program Command Sequence
The system may program the device by word or byte, depending on the state of
the BYTE# pin. Programming is a four-bus-cycle operation. The program com-
mand sequence is initiated by writing two unlock write cycles, followed by the
program set-up command. The program address and data are written next, which
in turn initiate the Embedded Program algorithm. The system is
not
required to
provide further controls or timings. The device automatically generates the pro-
gram pulses and verifies the programmed cell margin. Table
9
shows the address
and data requirements for the byte program command sequence.
When the Embedded Program algorithm is complete, the device then returns to
reading array data and addresses are no longer latched. The system can deter-
mine the status of the program operation by using DQ7, DQ6, or RY/BY#. See
“Write Operation Status” for information on these status bits.
Any commands written to the device during the Embedded Program Algorithm
are ignored. Note that a
hardware reset
immediately terminates the program-
ming operation. The Byte Program command sequence should be reinitiated once
the device has reset to reading array data, to ensure data integrity.
Programming is allowed in any sequence and across sector boundaries.
A bit
cannot be programmed from a “0” back to a “1”.
Attempting to do so may
halt the operation and set DQ5 to “1,” or cause the Data# Polling algorithm to
indicate the operation was successful. However, a succeeding read will show that
the data is still “0”. Only erase operations can convert a “0” to a “1”.
Unlock Bypass Command Sequence
The unlock bypass feature allows the system to program bytes or words to the
device faster than using the standard program command sequence. The unlock
bypass command sequence is initiated by first writing two unlock cycles. This is
followed by a third write cycle containing the unlock bypass command, 20h. The
device then enters the unlock bypass mode. A two-cycle unlock bypass program
command sequence is all that is required to program in this mode. The first cycle
in this sequence contains the unlock bypass program command, A0h; the second
cycle contains the program address and data. Additional data is programmed in
the same manner. This mode dispenses with the initial two unlock cycles required
in the standard program command sequence, resulting in faster total program-
ming time. Table
9
shows the requirements for the command sequence.
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| S71AL016D02BAWBF0 | Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S71AL016D02BAWBF0 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
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| S71AL016D02BAWBF3 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| S71AL016D02BAWTF0 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| S71AL016D02BAWTF2 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
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