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参数资料
| 型号： | S29XS064R0PBHW010 |
| 厂商： | SPANSION LLC |
| 元件分类： | PROM |
| 英文描述： | 4M X 16 FLASH 1.8V PROM, 80 ns, PBGA44 |
| 封装： | 7.50 X 5 MM, LEAD FREE, FBGA-44 |
| 文件页数： | 16/65页 |
| 文件大小： | 2116K |
| 代理商： | S29XS064R0PBHW010 |
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July 22, 2011 S29VS_XS064R_00_06
S29VS/XS-R MirrorBit
Flash Family
23
Da ta
Sh e e t
(Adv a n ce
In f o r m ation)
The system then writes the starting address/data combination. This starting address is the first address/data
pair to be programmed, and selects the “write-buffer-page” address. All subsequent address/data pairs must
fall within the “selected-write-buffer-page”, and be loaded in sequential order.
The “write-buffer-page” is selected by using the addresses AMAX-A5 where AMAX is A21 for S29VS/XS064R.
The “write-buffer-page” addresses must be the same for all address/data pairs loaded into the write
buffer. (This means Write Buffer Programming cannot be performed across multiple “write-buffer-pages”.
This also means that Write Buffer Programming cannot be performed across multiple sectors. If the system
attempts to load programming data outside of the selected “write-buffer-page”, the operation will ABORT.)
After writing the Starting Address/Data pair, the system then writes the remaining address/data pairs into the
write buffer. Write buffer locations must be loaded in sequential order.
Note that if a Write Buffer address location is loaded multiple times, the “address/data pair” counter will be
decremented for every data load operation. Also, the last data loaded at a location before the “Program
Buffer to Flash” confirm command will be programmed into the device. It is the software’s responsibility to
comprehend ramifications of loading a write-buffer location more than once. The counter decrements for
each data load operation, NOT for each unique write-buffer-address location.
Once the specified number of write buffer locations have been loaded, the system must then write the
“Program Buffer to Flash” command at the Sector Address. Any other address/data write combinations will
abort the Write Buffer Programming operation. The device will then “go busy”. The Data Bar polling
techniques should be used while monitoring the last address location loaded into the write buffer. This
eliminates the need to store an address in memory because the system can load the last address location,
issue the program confirm command at the last loaded address location, and then data bar poll at that same
address. DQ7, DQ6, DQ5, DQ2, and DQ1 should be monitored to determine the device status during Write
Buffer Programming.
The write-buffer “embedded” programming operation can be suspended using the standard suspend/resume
commands. Upon successful completion of the Write Buffer Programming operation, the device will return to
READ mode.
The Write Buffer Programming Sequence can be ABORTED under any of the following conditions:
Load a value that is greater than the page buffer size during the “Number of Locations to Program” step.
Write to an address in a sector different than the one specified during the “Write-Buffer-Load” command.
Write an Address/Data pair to a different write-buffer-page than the one selected by the “Starting Address”
during the “write buffer data loading” stage of the operation.
Write data other than the “Confirm Command” after the specified number of “data load” cycles.
The ABORT condition is indicated by DQ1 = 1, DQ7 = DATA# (for the “last address location loaded”), DQ6 =
TOGGLE, DQ5 = 0. This indicates that the Write Buffer Programming Operation was ABORTED. Note: The
Secured Silicon sector, autoselect, and CFI functions are unavailable when a program operation is in
progress.
Use of the write buffer is strongly recommended for programming when multiple words are to be
programmed. Write buffer programming is allowed in any sequence of memory (or address) locations. These
flash devices are capable of handling multiple write buffer programming operations on the same write buffer
address range without intervening erases. However, programming the same word address multiple times
without intervening erases requires a modified programming method. Please contact your local Spansion
representative for details.
9.11
Autoselect Mode
The autoselect mode provides manufacturer and device identification, and sector protection verification,
through identifier codes output from the internal register (which is separate from the memory array) on
DQ15-DQ0. This mode is primarily intended for programming equipment to automatically match a device to
be programmed with its corresponding programming algorithm. The autoselect codes can also be accessed
in-system.
When verifying sector protection, the sector address must appear on the appropriate highest order address
bits. The remaining address bits are don’t care. When all necessary bits have been set as required, the
programming equipment may then read the corresponding identifier code on DQ15-DQ0. The autoselect
codes can also be accessed in-system through the command register. The command sequence is illustrated
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