AM29F400BB-90SD, 4 MEGABIT 512 K x 8-BIT / 256 K x 16-BIT CMOS 5V,
DISTINCTIVE CHARACTERISTICS
Single power supply operation
5.0 volt-only operation for read, erase, and
program operations
Minimizes system level requirements
Manufactured on 0.32 µm process technology
Compatible with 0.5 µm Am29F400 device
High performance
Access times as fast as 45 ns
Low power consumption (typical values at
5 MHz)
1 µA standby mode current
20 mA read current (byte mode)
28 mA read current (word mode)
30 mA program/erase current
Flexible sector architecture
One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and
seven 64 Kbyte sectors (byte mode)
One 8 Kword, two 4 Kword, one 16 Kword, and
seven 32 Kword sectors (word mode)
Supports full chip erase
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
Top or bottom boot block configurations available
Embedded Algorithms
Embedded Erase algorithm automatically
preprograms and erases the entire chip or any
combination of designated sectors
Embedded Program algorithm automatically
writes and verifies data at specified addresses
Minimum 1,000,000 program/erase cycles per
sector guaranteed
20-year data retention at 125°C
Reliable operation for the life of the system
Package option
48-pin TSOP
44-pin SO
Known Good Die (KGD)
(see publication number 21258)
Compatibility with JEDEC standards
Pinout and software compatible with singlepower-supply Flash
Superior inadvertent write protection
Data# Polling and toggle bits Provides a software method of detecting
program or erase operation completion
Ready/Busy# pin (RY/BY#)
Provides a hardware method of detecting
program or erase cycle completion
Erase Suspend/Erase Resume
Suspends an erase operation to read data from,
or program data to, a sector that is not being
erased, then resumes the erase operation
Hardware reset pin (RESET#)
Hardware method to reset the device to reading
array data
