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8 Mbit LPC Flash
A Microchip Technology Company
SST49LF080A
Data Sheet
Product Description
The SST49LF080A flash memory device is 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 supported: LPC mode for in-system operations and Parallel Programming (PP)
mode to interface with programming equipment.
The SST49LF080A flash memory device is manufactured with SST’s proprietary, high-performance
SuperFlash Technology. The split-gate cell design and thick-oxide tunneling injector attain better reli-
ability and manufacturability compared with alternate approaches. The SST49LF080A device signifi-
cantly improves performance and reliability, while lowering power consumption. The SST49LF080A
device writes (Program or Erase) with a single 3.0-3.6V power supply. It uses less energy during Erase
and Program than alternative flash memory technologies. The total energy consumed is a function of
the applied voltage, current and time of application. For any give voltage range, the SuperFlash tech-
nology 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
SST49LF080A product provides a maximum Byte-Program time of 20 μsec. The entire memory can be
erased and programmed byte-by-byte typically in 16 seconds 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 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 SST49LF080A device is offered in 32-lead
TSOP and 32-lead PLCC packages. See Figures 2 and 3 for pin assignments and Table 1 for pin
descriptions.
?2011 Silicon Storage Technology, Inc.
2
DS25086A
11/11
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