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PRELIMINARY DATA

April 2005

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

M28W640FCT

M28W640FCB

64 Mbit (4Mb x16, Boot Block)

3V Supply Flash Memory

FEATURES SUMMARY

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SUPPLY VOLTAGE

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ACCESS TIME: 70, 85, 90,100ns

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PROGRAMMING TIME:

–

10µs typical

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Double Word Programming Option

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Quadruple Word Programming Option

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COMMON FLASH INTERFACE

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MEMORY BLOCKS

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Parameter Blocks (Top or Bottom

location)

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Main Blocks

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BLOCK LOCKING

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All blocks locked at Power Up

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Any combination of blocks can be locked

–WP for Block Lock-Down

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SECURITY

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128 bit user Programmable OTP cells

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64 bit unique device identifier

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AUTOMATIC STAND-BY MODE

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PROGRAM and ERASE SUSPEND

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100,000 PROGRAM/ERASE CYCLES per

BLOCK

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ELECTRONIC SIGNATURE

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Manufacturer Code: 20h

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Top Device Code, M28W640FCT: 8848h

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Bottom Device Code, M28W640FCB:

8849h

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PACKAGES

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Compliant with Lead-Free Soldering

Processes

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Lead-Free Versions

Figure 1. Packages

TSOP48 (N)

12 x 20mm

FBGA

TFBGA48 (ZB)

6.39 x 10.5mm