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Am29F400BB-70FE Datasheet

  • Am29F400BB-70FE

  • Advanced Micro Devices [4 Megabit (512 K x 8-Bit/256 K x 16...

  • 481.01KB

  • AMD

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PRELIMINARY
Am29F400B
4 Megabit (512 K x 8-Bit/256 K x 16-Bit)
CMOS 5.0 Volt-only Boot Sector Flash Memory
DISTINCTIVE CHARACTERISTICS
s
Single power supply operation
鈥?5.0 volt-only operation for read, erase, and
program operations
鈥?Minimizes system level requirements
s
Manufactured on 0.35 碌m process technology
鈥?Compatible with 0.5 碌m Am29F400 device
s
High performance
鈥?Access times as fast as 55 ns
s
Low power consumption (typical values at 5
MHz)
鈥?1 碌A standby mode current
鈥?20 mA read current (byte mode)
鈥?28 mA read current (word mode)
鈥?30 mA program/erase current
s
Flexible sector architecture
鈥?One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and
seven 64 Kbyte sectors (byte mode)
鈥?One 8 Kword, two 4 Kword, one 16 Kword, and
seven 32 Kword sectors (word mode)
鈥?Supports full chip erase
鈥?Sector Protection features:
A hardware method of locking a sector to
prevent any program or erase operations within
that sector
Sectors can be locked via programming
equipment
Temporary Sector Unprotect feature allows code
changes in previously locked sectors
s
Top or bottom boot block configurations
available
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 data at specified addresses
s
Minimum 1,000,000 program/erase cycles per
sector guaranteed
s
Package option
鈥?48-pin TSOP
鈥?44-pin SO
s
Compatibility with JEDEC standards
鈥?Pinout and software compatible with single-
power-supply Flash
鈥?Superior inadvertent write protection
s
Data# Polling and toggle bits
鈥?Provides a software method of detecting
program or erase operation completion
s
Ready/Busy# pin (RY/BY#)
鈥?Provides a hardware method of detecting
program or erase cycle completion
s
Erase Suspend/Erase Resume
鈥?Suspends an erase operation to read data from,
or program data to, a sector that is not being
erased, then resumes the erase operation
s
Hardware reset pin (RESET#)
鈥?Hardware method to reset the device to reading
array data
Publication#
21505
Rev:
C
Amendment/+2
Issue Date:
April 1998

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