PRELIMINARY
Am29F040B
4 Megabit (512 K x 8-Bit)
CMOS 5.0 Volt-only, Uniform Sector Flash Memory
Distinctive Characteristics
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5.0 V
卤
10% for read and write operations
鈥?Minimizes system level power requirements
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Manufactured on 0.35 碌m process technology
鈥?Compatible with 0.5 碌m Am29F040 device
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High performance
鈥?Access times as fast as 55 ns
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Low power consumption
鈥?20 mA typical active read current
鈥?30 mA typical program/erase current
鈥?1 碌A typical standby current (standard access
time to active mode)
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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
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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
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Minimum 1,000,000 program/erase cycles per
sector guaranteed
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Package options
鈥?32-pin PLCC, TSOP, or PDIP
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Compatible with JEDEC standards
鈥?Pinout and software compatible with
single-power-supply Flash standard
鈥?Superior inadvertent write protection
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Data# Polling and toggle bits
鈥?Provides a software method of detecting
program or erase cycle completion
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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