SmartVoltage technology are high-density, low-cost,
nonvolatile, read/write storage solution for a wide
range of applications. The LH28F800SG-L/SGH-L
can operate at V
CC
= 2.7 V and V
PP
= 2.7 V. Their
low voltage operation capability realizes longer
battery life and suits for cellular phone application.
Their symmetrically-blocked architecture, flexible
voltage and enhanced cycling capability provide for
highly flexible component suitable for resident flash
arrays, SIMMs and memory cards. Their enhanced
suspend capabilities provide for an ideal solution for
code + data storage applications. For secure code
storage applications, such as networking, where
code is either directly executed out of flash or
downloaded to DRAM, the LH28F800SG-L/SGH-L
offer three levels of protection : absolute protection
with V
PP
at GND, selective hardware block locking,
or flexible software block locking.These alternatives
give designers ultimate control of their code security
needs.
8 M-bit (512 kB x 16) SmartVoltage
Flash Memories
FEATURES
• SmartVoltage technology
– 2.7 V, 3.3 V or 5 V V
CC
– 2.7 V, 3.3 V, 5 V or 12 V V
PP
• High performance read access time
LH28F800SG-L70/SGH-L70
– 70 ns (5.0±0.25 V)/80 ns (5.0±0.5 V)/
85 ns (3.3±0.3 V)/100 ns (2.7 to 3.0 V)
LH28F800SG-L10/SGH-L10
– 100 ns (5.0±0.5 V)/100 ns (3.3±0.3 V)/
120 ns (2.7 to 3.0 V)
• Enhanced automated suspend options
– Word write suspend to read
– Block erase suspend to word write
– Block erase suspend to read
• Enhanced data protection features
– Absolute protection with V
PP
= GND
– Flexible block locking
– Block erase/word write lockout during power
transitions
• SRAM-compatible write interface
• High-density symmetrically-blocked architecture
– Sixteen 32 k-word erasable blocks
• Enhanced cycling capability
– 100 000 block erase cycles
– 1.6 million block erase cycles/chip
• Low power management
– Deep power-down mode
– Automatic power saving mode decreases I
CC
in static mode
• Automated word write and block erase
– Command user interface
– Status register
• ETOX
TM
∗
V nonvolatile flash technology
• Packages
– 48-pin TSOP TypeI (TSOP048-P-1220)
Normal bend/Reverse bend
– 48-ball CSP(FBGA048-P-0808)
∗
ETOX is a trademark of Intel Corporation.
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices shown in catalogs, data books,
etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
-1-
LH28F800SG-L/SGH-L (FOR TSOP, CSP)
COMPARISON TABLE
VERSIONS
LH28F800SG-L
(FOR TSOP, CSP)
LH28F800SGH-L
(FOR TSOP, CSP)
LH28F800SG-L
∗
1
(FOR SOP)
OPERATING TEMPERATURE
0 to +70˚C
– 40 to +85˚C
0 to +70˚C
PACKAGE
48-pin TSOP (I)
48-ball CSP
48-pin TSOP (I)
48-ball CSP
44-pin SOP
WRITE PROTECT FUNCTION
Controlled by
WP# and RP# pins
Controlled by
WP# and RP# pins
Controlled by RP# pin
∗
1 Refer to the datasheet of LH28F800SG-L (FOR SOP).
PIN CONNECTIONS
48-PIN TSOP (Type I)
A
15
A
14
A
13
A
12
A
11
A
10
A
9
A
8
NC
NC
WE#
RP#
V
PP
WP#
RY/BY#
A
18
A
17
A
7
A
6
A
5
A
4
A
3
A
2
A
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
48-BALL CSP
A
16
NC
GND
DQ
15
DQ
7
DQ
14
DQ
6
DQ
13
DQ
5
DQ
12
DQ
4
V
CC
DQ
11
DQ
3
DQ
10
DQ
2
DQ
9
DQ
1
DQ
8
DQ
0
OE#
GND
CE#
A
0
1
A
B
C
D
A
2
A
3
A
1
A
0
2
A
5
A
6
A
4
OE#
DQ
8
DQ
0
3
A
17
A
18
A
7
DQ
1
DQ
2
DQ
9
4
WP#
V
PP
RY/BY#
TOP VIEW
5
WE#
RP#
NC
DQ
12
V
CC
DQ
4
6
A
8
NC
A
9
DQ
6
DQ
5
DQ
13
7
A
11
A
10
A
12
DQ
15
DQ
14
DQ
7
8
A
14
A
13
A
15
A
16
GND
NC
DQ
10
DQ
11
DQ
3
E GND
F
CE#
(FBGA048-P-0808)
(TSOP048-P-1220)
NOTE :
Reverse bend available on request.
-2-
LH28F800SG-L/SGH-L (FOR TSOP, CSP)
BLOCK DIAGRAM
DQ
0
-DQ
15
OUTPUT
BUFFER
INPUT
BUFFER
OUTPUT
MULTIPLEXER
IDENTIFIER
REGISTER
DATA
REGISTER
I/O
LOGIC
V
CC
CE#
STATUS
REGISTER
COMMAND
USER
INTERFACE
WE#
OE#
WP#
RP#
DATA
COMPARATOR
A
0
-A
18
INPUT
BUFFER
Y DECODER
Y GATING
WRITE
STATE
MACHINE
RY/BY#
PROGRAM/ERASE
VOLTAGE SWITCH
V
PP
ADDRESS
LATCH
X DECODER
16
32 k-WORD
BLOCKS
V
CC
GND
ADDRESS
COUNTER
-3-
LH28F800SG-L/SGH-L (FOR TSOP, CSP)
PIN DESCRIPTION
SYMBOL
A
0
-A
18
TYPE
INPUT
NAME AND FUNCTION
ADDRESS INPUTS :
Inputs for addresses during read and write operations. Addresses
are internally latched during a write cycle.
DATA INPUT/OUTPUTS :
Inputs data and commands during CUI write cycles; outputs
DQ
0
-DQ
15
INPUT/
OUTPUT
data during memory array, status register, and identifier code read cycles. Data pins
float to high-impedance when the chip is deselected or outputs are disabled. Data is
internally latched during a write cycle.
CHIP ENABLE :
Activates the device's control logic, input buffers, decoders, and sense
CE#
INPUT
amplifiers. CE#-high deselects the device and reduces power consumption to standby
levels.
RESET/DEEP POWER-DOWN :
Puts the device in deep power-down mode and resets
internal automation. RP#-high enables normal operation. When driven low, RP# inhibits
write operations which provide data protection during power transitions. Exit from deep
RP#
INPUT
power-down sets the device to read array mode.
RP# at V
HH
allows to set permanent lock-bit. Block erase, word write, or lock-bit
configuration with V
IH
< RP# < V
HH
produce spurious results and should not be
attempted.
OE#
WE#
WP#
INPUT
INPUT
INPUT
OUTPUT ENABLE :
Controls the device's outputs during a read cycle.
WRITE ENABLE :
Controls writes to the CUI and array blocks. Addresses and data are
latched on the rising edge of the WE# pulse.
WRITE PROTECT :
Master control for block locking. When V
IL
, locked blocks cannot be
erased and programmed, and block lock-bits can not be set and reset.
READY/BUSY :
Indicates the status of the internal WSM. When low, the WSM is
performing an internal operation (block erase, word write, or lock-bit configuration).
RY/BY#-high indicates that the WSM is ready for new commands, block erase is
suspended, and word write is inactive, word write is suspended, or the device is in deep
power-down mode. RY/BY# is always active and does not float when the chip is
deselected or data outputs are disabled.
BLOCK ERASE, WORD WRITE, LOCK-BIT CONFIGURATION POWER SUPPLY :
For erasing array blocks, writing words, or configuring lock-bits. With V
PP
≤
V
PPLK
,
V
PP
SUPPLY
memory contents cannot be altered. Block erase, word write, and lock-bit configuration
with an invalid V
PP
(see
Section 6.2.3 "DC CHARACTERISTICS")
produce spurious
results and should not be attempted.
DEVICE POWER SUPPLY :
Internal detection configured the device for 2.7 V, 3.3 V or
5 V operation. To switch from one voltage to another, ramp V
CC
down to GND and then
V
CC
SUPPLY
ramp V
CC
to the new voltage. Do not float any power pins. With V
CC
≤
V
LKO
, all write
attempts to the flash memory are inhibited. Device operations at invalid V
CC
voltage
(see
Section 6.2.3 "DC CHARACTERISTICS")
produce spurious results and should
GND
NC
SUPPLY
not be attempted.
GROUND :
Do not float any ground pins.
NO CONNECT :
Lead is not internal connected; recommend to be floated.
RY/BY#
OUTPUT
-4-
LH28F800SG-L/SGH-L (FOR TSOP, CSP)
1 INTRODUCTION
This datasheet contains LH28F800SG-L/SGH-L
specifications. Section 1 provides a flash memory
overview. Sections 2, 3, 4, and 5 describe the
memory organization and functionality. Section 6
covers electrical specifications. LH28F800SG-L/
SGH-L flash memories documentation also includes
ordering information which is referenced in
Section 7.
the power of 5 V V
CC
. But, 5 V V
CC
provides the
highest read performance. V
PP
at 2.7 V, 3.3 V and
5 V eliminates the need for a separate 12 V
converter, while V
PP
= 12 V maximizes block erase
and word write performance. In addition to flexible
erase and program voltages, the dedicated V
PP
pin
gives complete data protection when V
PP
≤
V
PPLK
.
Table 1 V
CC
and V
PP
Voltage Combinations
Offered by SmartVoltage Technology
V
CC
VOLTAGE
2.7 V
3.3 V
5V
V
PP
VOLTAGE
2.7 V, 3.3 V, 5 V, 12 V
3.3 V, 5 V, 12 V
5 V, 12 V
1.1
New Features
Key enhancements of LH28F800SG-L/SGH-L
SmartVoltage flash memories are :
• SmartVoltage Technology
• Enhanced Suspend Capabilities
• In-System Block Locking
• Permanent Lock Capability,
Note following important differences :
• V
PPLK
has been lowered to 1.5 V to support
3.3 V and 5 V block erase, word write, and lock-
bit configuration operations. Designs that switch
V
PP
off during read operations should make sure
that the V
PP
voltage transitions to GND.
• To take advantage of SmartVoltage technology,
allow V
CC
connection to 2.7 V, 3.3 V or 5 V.
• Once set the permanent lock bit, the blocks
which have been set block lock-bit can not be
erased, written forever.
Internal V
CC
and V
PP
detection circuitry auto-
matically configures the device for optimized read
and write operations.
A command User Interface (CUI) serves as the
interface between the system processor and
internal operation of the device. A valid command
sequence written to the CUI initiates device
automation. An internal Write State Machine (WSM)
automatically executes the algorithms and timing
necessary for block erase, word write, and lock-bit
configuration operations.
A block erase operation erases one of the device’s
32 k-word blocks typically within 1.2 second (5 V
V
CC
, 12 V V
PP
) independent of other blocks. Each
block can be independently erased 100 000 times
(1.6 million block erases per device). Block erase
suspend mode allows system software to suspend
block erase to read data from, or write data to any
other block.
Writing memory data is performed in word
increments typically within 7.5 µs (5 V V
CC
, 12 V
V
PP
). Word write suspend mode enables the
system to read data from, or write data to any other
flash memory array location.
1.2
Product Overview
The LH28F800SG-L/SGH-L are high-performance
8 M-bit SmartVoltage flash memories organized as
512 k-word of 16 bits. The 512 k-word of data is
arranged in sixteen 32 k-word blocks which are
individually erasable, lockable, and unlockable in-
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