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PRELIMINARY

Am29F040B

4 Megabit (512 K x 8-Bit)

CMOS 5.0 Volt-only, Uniform Sector Flash Memory

Distinctive Characteristics

s

5.0 V

鹵

10% for read and write operations

鈥?Minimizes system level power requirements

s

Manufactured on 0.35 碌m process technology

鈥?Compatible with 0.5 碌m Am29F040 device

s

High performance

鈥?Access times as fast as 55 ns

s

Low power consumption

鈥?20 mA typical active read current

鈥?30 mA typical program/erase current

鈥?1 碌A(chǔ) typical standby current (standard access

time to active mode)

s

Flexible sector architecture

鈥?8 uniform sectors of 64 Kbytes each

鈥?Any combination of sectors can be erased

鈥?Supports full chip erase

鈥?Sector protection:

A hardware method of locking sectors to prevent

any program or erase operations within that

sector

s

Embedded Algorithms

鈥?Embedded Erase algorithm automatically

preprograms and erases the entire chip or any

combination of designated sectors

鈥?Embedded Program algorithm automatically

writes and verifies bytes at specified addresses

s

Minimum 1,000,000 program/erase cycles per

sector guaranteed

s

Package options

鈥?32-pin PLCC, TSOP, or PDIP

s

Compatible with JEDEC standards

鈥?Pinout and software compatible with

single-power-supply Flash standard

鈥?Superior inadvertent write protection

s

Data# Polling and toggle bits

鈥?Provides a software method of detecting

program or erase cycle completion

s

Erase Suspend/Erase Resume

鈥?Suspends a sector erase operation to read data

from, or program data to, a non-erasing sector,

then resumes the erase operation

Publication#

21445

Rev:

B

Amendment/+2

Issue Date:

April 1998

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