
Advanced Micro Devices
General Description
The Am29SL400 is an 4Mbit, 1.8 V volt-only Flash memory organized as 524,288 bytes or 262,144 words. The device is offered in 48-pin TSOP and 48-ball FBGA packages. The word-wide data (x16) appears on DQ15–DQ0; the byte-wide (x8) data appears on DQ7–DQ0. This device is designed to be programmed and erased in-system with a single 1.8 volt VCC supply. No VPP is required for write or erase operations. The device can also be programmed in standard EPROM programmers.
Distinctive Characteristics
◾ Single power supply operation
— 1.65 to 2.2 V for read, program, and erase operations
— Ideal for battery-powered applications
◾ Manufactured on 0.32 µm process technology
◾ High performance
— Access times as fast as 100 ns
◾ Ultra low power consumption (typical values at 5 MHz)
— 1 µA Automatic Sleep Mode current
— 1 µA standby mode current
— 5 mA read current
— 20 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 in-system or via
programming equipment
Temporary Sector Unprotect feature allows code
changes in previously locked sectors
◾ Unlock Bypass Program Command
— Reduces overall programming time when
issuing multiple program command sequences
◾ 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 erase cycle guarantee per sector
◾ 20-year data retention at 125°C
◾ Package option
— 48-ball FBGA
— 48-pin TSOP