SST49LF080A datasheet(2/50 Pages) MICROCHIP

2 / 50 page

DS20005086B

11/14

8 Mbit LPC Flash

SST49LF080A

Data Sheet

Product Description

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.

SST49LF080A flash memory device is manufactured with proprietary, high-performance SuperFlash

Technology. The split-gate cell design and thick-oxide tunneling injector attain better reliability and

manufacturability compared with alternate approaches. The SST49LF080A device significantly

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 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 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 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 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.

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