參數(shù)資料
型號(hào)： SST49LF020-33-4C-WH
廠商： SILICON STORAGE TECHNOLOGY INC
元件分類： PROM
英文描述： 2 Megabit LPC Flash
中文描述： 256K X 8 FLASH 3V PROM, 11 ns, PDSO32
封裝： 8 X 14 MM, MO-142BA, TSOP1-32
文件頁(yè)數(shù)： 1/48頁(yè)
文件大小： 724K
代理商： SST49LF020-33-4C-WH
2001 Silicon Storage Technology, Inc.
S71213-00-000
11/01
1
562
The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc.
Intel is a registered trademark of Intel Corporation.
These specifications are subject to change without notice.
Advance Information
FEATURES:
LPC Interface Flash
– SST49LF040: 512K x8 (4 Mbit)
Conforms to Intel LPC Interface Specification 1.0
Flexible Erase Capability
– Uniform 4 KByte sectors
– Uniform 64 KByte overlay blocks
– 64 KByte Top boot block protection
– Chip-Erase for PP Mode Only
Single 3.0-3.6V Read and Write Operations
Superior Reliability
– Endurance: 100,000 Cycles (typical)
– Greater than 100 years Data Retention
Low Power Consumption
– Active Read Current: 6 mA (typical)
– Standby Current: 10 μA (typical)
Fast Sector-Erase/Byte-Program Operation
– Sector-Erase Time: 18 ms (typical)
– Block-Erase Time: 18 ms (typical)
– Chip-Erase Time: 70 ms (typical)
– Byte-Program Time: 14 μs (typical)
– Chip Rewrite Time: 8 seconds (typical)
– Single-pulse Program or Erase
– Internal timing generation
Two Operational Modes
– Low Pin Count (LPC) Interface mode for
in-system operation
– Parallel Programming (PP) mode for fast production
programming
LPC Interface Mode
– 5-signal communication interface supporting
byte Read and Write
– 33 MHz clock frequency operation
– WP# and TBL# pins provide hardware write protect
for entire chip and/or top boot block
– Standard SDP Command Set
– Data# Polling and Toggle Bit for End-of-Write
detection
– 5 GPI pins for system design flexibility
– ID pins for multi-chip selection
– Decode both top and bottom regions of the
system memory map
Parallel Programming (PP) Mode
– 11-pin multiplexed address and 8-pin data
I/O interface
– Supports fast programming In-System on pro-
grammer equipment
CMOS and PCI I/O Compatibility
Packages Available
– 32-lead PLCC
– 32-lead TSOP (8mm x 14mm)
PRODUCT DESCRIPTION
The SST49LF040 flash memory devices are designed to
interface with the LPC bus for PC and Internet Appliance
application in compliance with Intel Low Pin Count (LPC)
Interface Specification 1.0. Two interface modes are sup-
ported by the SST49LF040: LPC mode for In-System
operation and Parallel Programming (PP) mode to interface
with programmer equipment.
The SST49LF040 flash memory devices are manufactured
with SST’s proprietary, high performance SuperFlash Tech-
nology. The split-gate cell design and thick oxide tunneling
injector attain better reliability and manufacturability com-
pared with alternate approaches. The SST49LF040 device
significantly improves performance and reliability, while low-
ering power consumption. The SST49LF040 device writes
(Program or Erase) with a single 3.0-3.6V power supply. It
uses less energy during Erase and Program than alterna-
tive flash memory technologies. The total energy con-
sumed is a function of the applied voltage, current and time
of application. Since for any give voltage range, the Super-
Flash technology uses less current to program and has a
shorter erase time, the total energy consumed during any
Erase or Program operation is less than alternative flash
memory technologies. The SST49LF040 product provides
a maximum Byte-Program time of 20 μsec. The entire
memory can be erased and programmed byte-by-byte typ-
ically in 8 seconds when using status detection features
such as Toggle Bit or Data# Polling to indicate the comple-
tion of Program operation. The SuperFlash technology pro-
vides fixed Erase and Program time, independent of the
number of Erase/Program cycles that have performed.
Therefore the system software or hardware does not have
to be calibrated or correlated to the cumulative number of
erase cycles as is necessary with alternative flash memory
technologies, whose Erase and Program time increase
with accumulated Erase/Program cycles.
To meet high density, surface mount requirements, the
SST49LF040 device is offered in 32-lead TSOP and 32-
lead PLCC packages. See Figures 2 and 3 for pin assign-
ments and Table 1 for pin descriptions.
4 Mbit LPC Flash
SST49LF040
SST49LF0404 Mb LPC Flash
相關(guān)PDF資料
PDF描述
SST49LF040-33-4C-NH 4 Mbit LPC Flash
SST49LF040-33-4C-WH 4 Mbit LPC Flash
SST49LF080A 8 Mbit LPC Flash
SST49LF080A-33-4C-NH 8 Mbit LPC Flash
SST49LF080A-33-4C-WH 8 Mbit LPC Flash
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SST49LF020A 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit LPC Flash
SST49LF020A-33-4C-NHE 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit LPC Flash
SST49LF020A-33-4C-WHE 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:2 Mbit LPC Flash
SST49LF030A 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:3 Mbit LPC Flash
SST49LF030A-33-4C-NH 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:3 Mbit LPC Flash
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