The AM29F400B-55EI is a 4 Mbit, 5.0 V flash memory organized as 524,288 bytes or 262,144 words. The device is available in a 48-pin TSOP package. The device is also available in Known Good Die (KGD) form. The device is designed to be programmed in-system using a standard system 5.0-volt VCC supply. 12.0 V VPP is not required for write or erase operations. The device can also be programmed in a standard EPROM programmer.

Features:

■ Single power supply operation

— 5.0 V operation only for read, erase, and program operations

— Minimize system-level requirements

■ Manufactured in 0.35 µm process technology

— Compatible with 0.5 µm Am29F400 devices

■ High performance

— Access times as fast as 70 ns

■ Low power consumption (typical 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 department structure

— One 16 KB, two 8 KB, one 32 KB, and seven 64 KB sectors (byte mode)

— One 8 Kword, two 4 Kword, one 16 Kword, and seven 32 Kword sectors (word mode)

— Support full chip erase

■ Available in top or bottom boot block configurations

■ Embedded algorithms

— Embedded erase algorithm automatically preprograms and erases the entire chip or any combination of specified sectors

— Embedded program algorithm automatically writes and verifies data at the specified address

■ Guaranteed minimum of 1,000,000 write cycles per sector

■ Compatibility with JEDEC standards

— Pinout and software compatible with single-supply flash memory

— Excellent accidental write protection

■ Data# polling and toggle bit

— Provides a software method to detect program or erase operation completion

■ Wipe suspend/wipe resume

— Suspends the erase operation to read or program data from unerased sectors, then resumes the erase operation