LH28F320S3NS-L11 Sharp Microelectronics, LH28F320S3NS-L11 Datasheet - Page 20

IC FLASH 32MBIT 110NS 56SSOP

LH28F320S3NS-L11

Manufacturer Part Number
LH28F320S3NS-L11
Description
IC FLASH 32MBIT 110NS 56SSOP
Manufacturer
Sharp Microelectronics
Datasheet

Specifications of LH28F320S3NS-L11

Format - Memory
FLASH
Memory Type
FLASH
Memory Size
32M (4Mx8, 2Mx16)
Speed
110ns
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Package / Case
56-SSOP
Lead Free Status / RoHS Status
Contains lead / Request inventory verification
Other names
425-1844
LHF32K01

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4.8 Word/Byte Write Command
Word/byte write is executed by a two-cycle command
sequence. Word/Byte Write setup (standard 40H or
alternate 10H) is written, followed by a second write
that specifies the address and data (latched on the
rising edge of WE#). The WSM then takes over,
controlling the word/byte write and write verify
algorithms internally. After the word/byte write
sequence is written, the device automatically outputs
status register data when read (see Figure 7). The
CPU can detect the completion of the word/byte write
event by analyzing the STS pin or status register bit
SR.7.
When word/byte write is complete, status register bit
SR.4 should be checked. If word/byte write error is
detected, the status register should be cleared. The
internal WSM verify only detects errors for "1"s that
do not successfully write to "0"s. The CUI remains in
read status register mode until it receives another
command.
Reliable word/byte writes can only occur when
V
this high voltage, memory contents are protected
against word/byte writes. If word/byte write is
attempted while V
and SR.4 will be set to "1". Successful word/byte
write requires that the corresponding block lock-bit be
cleared or, if set, that WP#=V
attempted when the corresponding block lock-bit is
set and WP#=V
Word/byte
produce
attempted.
4.9 Multi Word/Byte Write Command
Multi word/byte write is executed by at least four-
cycle or up to 35-cycle command sequence. Up to
32 bytes in x8 mode (16 words in x16 mode) can be
loaded into the buffer and written to the Flash Array.
First, multi word/byte write setup (E8H) is written with
the write address. At this point, the device
automatically outputs extended status register data
(XSR) when read (see Figure 8, 9). If extended
status register bit XSR.7 is 0, no Multi Word/Byte
Write command is available and multi word/byte write
setup which just has been written is ignored. To retry,
CC
=V
CC1/2
spurious
write
and V
IL
, SR.1 and SR.4 will be set to "1".
PP
PP
operations
≤V
results
=V
PPLK
PPH1/2/3
, status register bits SR.3
IH
and
. If word/byte write is
. In the absence of
with
should
V
IL
<WP#<V
not
be
LHF32K01
IH
continue monitoring XSR.7 by writing multi word/byte
write setup with write address until XSR.7 transitions
to 1. When XSR.7 transitions to 1, the device is ready
for loading the data to the buffer. A word/byte count
(N)-1 is written with write address. After writing a
word/byte count(N)-1, the device automatically turns
back to output status register data. The word/byte
count (N)-1 must be less than or equal to 1FH in x8
mode (0FH in x16 mode). On the next write, device
start address is written with buffer data. Subsequent
writes provide additional device address and data,
depending on the count. All subsequent address
must lie within the start address plus the count. After
the final buffer data is written, write confirm (D0H)
must be written. This initiates WSM to begin copying
the buffer data to the Flash Array. An invalid Multi
Word/Byte Write command sequence will result in
both status register bits SR.4 and SR.5 being set to
"1". For additional multi word/byte write, write another
multi word/byte write setup and check XSR.7. The
Multi Word/Byte Write command can be queued
while WSM is busy as long as XSR.7 indicates "1",
because LH28F320S3NS-L11 has two buffers. If an
error occurs while writing, the device will stop writing
and flush next multi word/byte write command loaded
in multi word/byte write command. Status register bit
SR.4 will be set to "1". No multi word/byte write
command is available if either SR.4 or SR.5 are set
to "1". SR.4 and SR.5 should be cleared before
issuing multi word/byte write command. If a multi
word/byte write command is attempted past an erase
block boundary, the device will write the data to Flash
Array up to an erase block boundary and then stop
writing. Status register bits SR.4 and SR.5 will be set
to "1".
Reliable multi byte writes can only occur when
V
this high voltage, memory contents are protected
against multi word/byte writes. If multi word/byte write
is attempted while V
SR.3 and SR.4 will be set to "1". Successful multi
word/byte write requires that the corresponding block
lock-bit be cleared or, if set, that WP#=V
byte write is attempted when the corresponding block
lock-bit is set and WP#=V
set to "1".
CC
=V
CC1/2
and V
PP
=V
PP
≤V
PPH1/2/3
IL
PPLK
, SR.1 and SR.4 will be
, status register bits
. In the absence of
IH
Rev. 1.55
. If multi
17

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