SST49LF008A-33-4C-EIE-T【PDF 1/45 页】IC FLASH FWH 8MBIT 33MHZ 40TSOP

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8 Mbit Firmware Hub

A Microchip Technology Company

SST49LF008A

Data Sheet

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 provide 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 supported by the SST49LF008A: Firmware Hub (FWH)

Interface mode for in-system programming and Parallel Programming (PP) mode

for fast factory programming of PC-BIOS applications.

Features

? Firmware Hub for Intel 8xx Chipsets

? 8 Mbit SuperFlash memory array for code/data

storage

– 1024K x8

? 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: 15 seconds (typical)

– Single-pulse Program or Erase

– Internal timing generation

? Two Operational Modes

– Firmware Hub Interface (FWH) Mode for

In-System operation

– Parallel Programming (PP) Mode for fast

production programming

? Firmware Hub Hardware 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

– Block Locking Register for all blocks

– Standard SDP Command Set

– Data# Polling and Toggle Bit for End-of-Writedetection

– 5 GPI pins for system design flexibility

– 4 ID pins for multi-chip selection

? Parallel Programming (PP) Mode

– 11-pin multiplexed address and

8-pin data I/O interface

– Supports fast In-System or PROM programming for

manufacturing

? CMOS and PCI I/O Compatibility

? Packages Available

– 32-lead PLCC

– 32-lead TSOP (8mm x 14mm)

– 40-lead TSOP (10mm x 20mm)

– Non-Pb (lead-free) packages available

? All non-Pb (lead-free) devices are RoHS compliant

?2011 Silicon Storage Technology, Inc.

www.microchip.com

DS25085A

10/11

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