Intel StrataFlash® Wireless Memory (L18)
To read data from a block in other partition and the other partition already in read array mode, a
new block address must be issued. However, if the other partition is not already in read array mode,
issuing a read array command will cause the buffered program operation to abort and a command
sequence error would be posted in the Status Register. See Figure 41, “Buffer Program Flowchart”
on page 87 for more details.
Note:
Simultaneous read-while-Buffered EFP is not supported.
14.3
Simultaneous Operation Restrictions
Since the Intel StrataFlash® Wireless Memory (L18) supports simultaneous read from one
partition while programming or erasing in another partition, certain features like the Protection
Registers and CFI Query data have special requirements with respect to simultaneous operation
capability. (Table 15 provides details on restrictions during simultaneous operations.)
Table 15.
Simultaneous Operation Restrictions
Protection
Register or
CFI data
Parameter
Other
Partition
Notes
Partitions
Array Data
While programming or erasing in a main partition, the Protection Register or CFI
data may be read from any other partition.
Read
(See Notes)
Read
Write/Erase
Reading the parameter partition array data is not allowed if the Protection Register
or Query data is being read from addresses within the parameter partition.
While programming or erasing in a main partition, read operations are allowed in the
parameter partition.
(See Notes)
Write/Erase
Write/Erase
Accessing the Protection Registers or CFI data from parameter partition addresses
is not allowed when reading array data from the parameter partition.
While programming or erasing in a main partition, read operations are allowed in the
parameter partition.
Read
Write
Read
Accessing the Protection Registers or CFI data in a partition that is different from the
one being programed/erased, and also different from the parameter partition is
allowed.
While programming the Protection Register, reads are only allowed in the other
main partitions.
No Access
Allowed
Read
Read
Access to array data in the parameter partition is not allowed. Programming of the
Protection Register can only occur in the parameter partition, which means this
partition is in Read Status.
While programming or erasing the parameter partition, reads of the Protection
Registers or CFI data are not allowed in any partition.
No Access
Allowed
Write/Erase
Reads in partitions other than the parameter partition are supported.
April 2005
74
Intel StrataFlash® Wireless Memory (L18)
Order Number: 251902, Revision: 009
Datasheet
INTEL [ INTEL ]
