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SST49LF008A_06 Datasheet, PDF (1/42 Pages) Silicon Storage Technology, Inc – 8 Mbit Firmware Hub | |||
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8 Mbit Firmware Hub
SST49LF008A
FEATURES:
SST49LF008A8 Mb Firmware Hub for Intel 8xx Chipsets
Data Sheet
⢠Firmware Hub for Intel 8xx Chipsets
⢠8 Mbit SuperFlash memory array for code/data
storage
â 1024K x8
⢠Flexible Erase Capability
â Uniform 4 KByte Sectors
â Uniform 64 KByte overlay blocks
â 64 KByte Top Boot Block protection
â Chip-Erase for PP Mode Only
⢠Single 3.0-3.6V Read and Write Operations
⢠Superior Reliability
â Endurance:100,000 Cycles (typical)
â Greater than 100 years Data Retention
⢠Low Power Consumption
â Active Read Current: 6 mA (typical)
â Standby Current: 10 µA (typical)
⢠Fast Sector-Erase/Byte-Program Operation
â Sector-Erase Time: 18 ms (typical)
â Block-Erase Time: 18 ms (typical)
â Chip-Erase Time: 70 ms (typical)
â Byte-Program Time: 14 µs (typical)
â Chip Rewrite Time: 15 seconds (typical)
â Single-pulse Program or Erase
â Internal timing generation
⢠Two Operational Modes
â Firmware Hub Interface (FWH) Mode for
In-System operation
â Parallel Programming (PP) Mode for fast
production programming
⢠Firmware Hub Hardware Interface Mode
â 5-signal communication interface supporting
byte Read and Write
â 33 MHz clock frequency operation
â WP# and TBL# pins provide hardware write
protect for entire chip and/or top Boot Block
â Block Locking Register for all blocks
â Standard SDP Command Set
â Data# Polling and Toggle Bit for End-of-Write
detection
â 5 GPI pins for system design flexibility
â 4 ID pins for multi-chip selection
⢠Parallel Programming (PP) Mode
â 11-pin multiplexed address and
8-pin data I/O interface
â Supports fast In-System or PROM programming
for manufacturing
⢠CMOS and PCI I/O Compatibility
⢠Packages Available
â 32-lead PLCC
â 32-lead TSOP (8mm x 14mm)
â 40-lead TSOP (10mm x 20mm)
â Non-Pb (lead-free) packages available
⢠All non-Pb (lead-free) devices are RoHS compliant
PRODUCT DESCRIPTION
The SST49LF008A flash memory devices are designed to
be read-compatible with the Intel 82802 Firmware Hub
(FWH) device for PC-BIOS application. These devices pro-
vide protection for the storage and update of code and data
in addition to adding system design flexibility through five
general purpose inputs. Two interface modes are sup-
ported by the SST49LF008A: Firmware Hub (FWH) Inter-
face mode for in-system programming and Parallel
Programming (PP) mode for fast factory programming of
PC-BIOS applications.
The SST49LF008A flash memory devices are manufac-
tured with SSTâs proprietary, high performance SuperFlash
technology. The split-gate cell design and thick-oxide tun-
neling injector attain better reliability and manufacturability
compared with alternate approaches. The SST49LF008A
devices significantly improve performance and reliability,
while lowering power consumption.
©2006 Silicon Storage Technology, Inc.
S71161-11-000
3/06
1
The SST49LF008A devices write (Program or Erase) with
a single 3.0-3.6V power supply. They use less energy dur-
ing Erase and Program than alternative flash memory tech-
nologies. The total energy consumed is a function of the
applied voltage, current and time of application. Since for
any given voltage range, the SuperFlash technology uses
less current to program and has a shorter Erase time, the
total energy consumed during any Erase or Program oper-
ation is less than alternative flash memory technologies.
The SST49LF008A products provide a maximum Byte-
Program time of 20 µsec. The entire memory can be
erased and programmed byte-by-byte typically in 15 sec-
onds when using status detection features such as Toggle
Bit or Data# Polling to indicate the completion of Program
operation. The SuperFlash technology provides fixed Erase
and Program times independent of the number of Erase/
Program cycles performed. Therefore the system software
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.
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