LH28F008SCR-L85 Sharp Electronics, LH28F008SCR-L85 Datasheet - Page 6

• Manufacturer Part Number: LH28F008SCR-L85
• Manufacturer: Sharp Electronics

Specifications of LH28F008SCR-L85

• Cell Type: NOR
• Density: 8Mb
• Access Time (max): 85ns
• Interface Type: Parallel
• Boot Type: Not Required
• Address Bus: 20b
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: TSOP
• Program/erase Volt (typ): 3.3/5/12V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Word Size: 8b
• Number Of Words: 1M
• Supply Current: 50mA
• Mounting: Surface Mount
• Pin Count: 40
• Lead Free Status / Rohs Status: Not Compliant

1 INTRODUCTION
This
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. LH28F008SCN-TF
Flash
application notes and design tools which are
referenced in Section 7.
1.1 New Features
The LH28F008SCN-TF SmartVoltage Flash memory
maintains backwards-compatibility with SHARP’s
28F008SA. Key enhancements over the 28F008SA
include:
Both devices share a compatible pinout, status
register,
similarities enable a clean upgrade from the
28F008SA to LH28F008SCN-TF. When upgrading, it
is important to note the following differences:
1.2 Product Overview
The LH28F008SCN-TF is a high-performance 8M-bit
SmartVoltage Flash memory organized as 1M-byte of
8 bits. The 1M-byte of data is arranged in sixteen
64K-byte blocks which are individually erasable,
lockable, and unlockable in-system. The memory
map is shown in Figure 3.
•SmartVoltage Technology
•Enhanced Suspend Capabilities
•In-System Block Locking
•Because of new feature support, the two devices
•V
•To take advantage of SmartVoltage technology,
have different device codes. This allows for
software optimization.
support 3.3V and 5V block erase, byte write, and
lock-bit configuration operations. The V
transitions to GND is recommended for designs
that switch V
allow V
PPLK
datasheet
memory
PP
has been lowered from 6.5V to 1.5V to
and
connection to 3.3V or 5V.
PP
software
off during read operation.
documentation
contains
command
LH28F008SCN-TF
also
set.
PP
includes
voltage
These
LHF08CTF
SmartVoltage technology provides a choice of V
and V
system performance and power expectations. 2.7V
V
5V V
performance. V
for a separate 12V converter, while V
maximizes block erase and byte write performance.
In addition to flexible erase and program voltages,
the dedicated V
when V
NOTE:
1. Block erase, byte write and lock-bit configuration
Internal
automatically 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 timings necessary for
block erase, byte write, and lock-bit configuration
operations.
A block erase operation erases one of the device’s
64K-byte blocks typically within 0.3s (5V V
V
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 or write data from any other block.
Writing memory data is performed in byte increments
typically within 6µs (5V V
suspend mode enables the system to read data or
execute code from any other flash memory array
location.
CC
PP
Table 1. V
operations with V
) independent of other blocks. Each block can be
consumes approximately one-fifth the power of
CC
PP
Offered by SmartVoltage Technology
V
PP
. But, 5V V
CC
combinations, as shown in Table 1, to meet
≤V
2.7V
V
3.3V
Voltage
5V
CC
PPLK
CC
(1)
PP
PP
.
and V
at 3.3V and 5V eliminates the need
and
pin gives complete data protection
CC
CC
<3.0V are not supported.
PP
V
provides the highest read
Voltage Combinations
PP
CC
, 12V V
detection
3.3V, 5V, 12V
V
PP
5V, 12V
PP
Voltage
⎯
). Byte write
Rev. 1.3
CC
Circuitry
PP
, 12V
=12V
CC
3