S71PL254 Datasheet, PDF (66/196 Pages) SPANSION – STACKED MULTI CHIP PRODUCT FLASH MEMORY AND RAM

Advance Information
Addresses
5Bh
Table 16. Primary Vendor-Specific Extended Query (Continued)
Data
Description
0027h (PL127J)
0017h (PL064J)
000Fh (PL032J)
Bank 4 Region Information
X = Number of Sectors in Bank 4
Command Definitions
Writing specific address and data commands or sequences into the command
register initiates device operations. Table 17 defines the valid register command
sequences. Writing incorrect address and data values or writing them in the
improper sequence may place the device in an unknown state. A reset com-
mand is then required to return the device to reading array data.
All addresses are latched on the falling edge of WE# or CE#, whichever happens
later. All data is latched on the rising edge of WE# or CE#, whichever happens
first. Refer to the AC Characteristic section for timing diagrams.
Reading Array Data
The device is automatically set to reading array data after device power-up. No
commands are required to retrieve data. Each bank is ready to read array data
after completing an Embedded Program or Embedded Erase algorithm.
After the device accepts an Erase Suspend command, the corresponding bank
enters the erase-suspend-read mode, after which the system can read data from
any non-erase-suspended sector within the same bank. The system can read
array data using the standard read timing, except that if it reads at an address
within erase-suspended sectors, the device outputs status data. After completing
a programming operation in the Erase Suspend mode, the system may once
again read array data with the same exception. See the Erase Suspend/Erase Re-
sume Commands section for more information.
The system must issue the reset command to return a bank to the read (or erase-
suspend-read) mode if DQ5 goes high during an active program or erase opera-
tion, or if the bank is in the autoselect mode. See the next section, Reset
Command, for more information.
See also Requirements for Reading Array Data in the Device Bus Operations sec-
tion for more information. The AC Characteristic table provides the read
parameters, and Figure 12 shows the timing diagram.
Reset Command
Writing the reset command resets the banks to the read or erase-suspend-read
mode. Address bits are don’t cares for this command.
The reset command may be written between the sequence cycles in an erase
command sequence before erasing begins. This resets the bank to which the sys-
tem was writing to the read mode. Once erasure begins, however, the device
ignores reset commands until the operation is complete.
The reset command may be written between the sequence cycles in a program
command sequence before programming begins. This resets the bank to which
the system was writing to the read mode. If the program command sequence is
written to a bank that is in the Erase Suspend mode, writing the reset command
returns that bank to the erase-suspend-read mode. Once programming begins,
however, the device ignores reset commands until the operation is complete.
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S29PL127J/S29PL064J/S29PL032J for MCP S29PL127J_064J_032J_MCP_00_A3 August 12, 2004