LRS1383 View Datasheet(PDF) - Sharp Electronics
Part Name
Description
MFG CO.
'LRS1383' PDF : 114 Pages View PDF
FUM00701
4
A reset time (tPHQV) is required from RST# switching
high until outputs are valid. Likewise, the device has a
wake time (tPHWL, tPHEL) from RST#-high until writes to
the CUI are recognized.
Erase operation erases one block or all blocks.
Programming is executed in either one word increments
or by page sized increments using the high speed program
page buffers. These operations use an industry standard
set of CUI command sequences. Suspend commands exist
for both the erase and program operations to permit the
system to interrupt an erase or program operation in
progress to enable the access to another memory location
in the same partition. Nested suspend is also supported.
This allows the software to suspend an erase in one
partition, start programming in a second partition,
suspend programming in the second partition, then read
from the second partition. After reading from the second
partition, resume the suspended program in the second
partition, then resume the suspended erase in the first
partition.
Figure 1 shows the block diagram for LH28F320BX/
LH28F640BX series. The example of pin descriptions are
explained in Table 3.1 and Table 3.2.
Table 2. Simultaneous Operation Modes Allowed with Four Planes(1, 2)
IF ONE
PARTITION IS:
Read
Array
THEN THE MODES ALLOWED IN THE OTHER PARTITION IS:
Read Read
ID/OTP Status
Read
Query
Word
Program
Page
Buffer
Program
OTP
Program
Block
Erase
Full Chip
Erase
Program
Suspend
Block
Erase
Suspend
Read Array
X
X
X
X
X
X
X
X
X
Read ID/OTP X
X
X
X
X
X
X
X
X
Read Status X
X
X
X
X
X
X
X
X
X
X
Read Query X
X
X
X
X
X
X
X
X
Word Program X
X
X
X
X
Page Buffer
Program
X
X
X
X
X
OTP Program
X
Block Erase X
X
X
X
Full Chip Erase
X
Program
Suspend
X
X
X
X
X
Block Erase
Suspend
X
X
X
X
X
X
X
NOTES:
1. "X" denotes the operation available.
2. Configurative Partition Dual Work Restrictions:
Status register reflects partition state, not WSM(Write State Machine) state - this allows a status register for each partition.
Only one partition can be erased or programmed at a time - no command queuing except page buffer program.
Commands must be written to an address within the block targeted by that command.
It is not possible to do burst reads that cross partition boundaries.
Appendix to Spec No.: MFM2-J13207 Model No.: LRS1383 March 1, 2001
Rev. 2.20
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