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參數(shù)資料
| 型號(hào)： | S75PL127J |
| 廠商： | Spansion Inc. |
| 英文描述： | Power supply woltage of 2.7 to 3.1 volt |
| 中文描述： | 功率2月7號(hào)至三月一日伏的電源woltage |
| 文件頁(yè)數(shù)： | 44/183頁(yè) |
| 文件大?。?/td> | 1409K |
| 代理商： | S75PL127J |
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August 12, 2004 S29PL127J_064J_032J_MCP_00_A3
S29PL127J/S29PL064J/S29PL032J for MCP
45
P r e l i m i n a r y
If DQ5 goes high during a program or erase operation, writing the reset command
returns the banks to the read mode (or erase-suspend-read mode if that bank
was in Erase Suspend).
Autoselect Command Sequence
The autoselect command sequence allows the host system to access the manu-
facturer and device codes, and determine whether or not a sector is protected.
The autoselect command sequence may be written to an address within a bank
that is either in the read or erase-suspend-read mode. The autoselect command
may not be written while the device is actively programming or erasing in the
other bank.
The autoselect command sequence is initiated by first writing two unlock cycles.
This is followed by a third write cycle that contains the bank address and the au-
toselect command. The bank then enters the autoselect mode. The system may
read any number of autoselect codes without reinitiating the command sequence.
Table 13
shows the address and data requirements. To determine sector protec-
tion information, the system must write to the appropriate bank address (BA) and
sector address (SA).
Table 3
shows the address range and bank number associ-
ated with each sector.
The system must write the reset command to return to the read mode (or erase-
suspend-read mode if the bank was previously in Erase Suspend).
Enter SecSi Sector/Exit SecSi Sector Command Sequence
The SecSi Sector region provides a secured data area containing a random, eight
word electronic serial number (ESN). The system can access the SecSi Sector re-
gion by issuing the three-cycle Enter SecSi Sector command sequence. The
device continues to access the SecSi Sector region until the system issues the
four-cycle Exit SecSi Sector command sequence. The Exit SecSi Sector command
sequence returns the device to normal operation. The SecSi Sector is not acces-
sible when the device is executing an Embedded Program or embedded Erase
algorithm.
Table 13
shows the address and data requirements for both command
sequences. See also “SecSi (Secured Silicon) Sector Flash Memory Region” for
further information.
Note that the ACC function and unlock bypass modes are not
available when the SecSi Sector is enabled.
Word Program Command Sequence
Programming is a four-bus-cycle operation. The program command sequence is
initiated by writing two unlock write cycles, followed by the program set-up com-
mand. The program address and data are written next, which in turn initiate the
Embedded Program algorithm. The system is
not
required to provide further con-
trols or timings. The device automatically provides internally generated program
pulses and verifies the programmed cell margin.
Table 13
shows the address and
data requirements for the program command sequence.
Note that the SecSi Sec-
tor, autoselect, and CFI functions are unavailable when a [program/erase]
operation is in progress.
When the Embedded Program algorithm is complete, that bank then returns to
the read mode and addresses are no longer latched. The system can determine
the status of the program operation by using DQ7, DQ6, or RY/BY#. Refer to the
Write Operation Status section 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
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相關(guān)代理商/技術(shù)參數(shù) |
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| S75PL127JBD | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Power supply woltage of 2.7 to 3.1 volt |
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