ADVANCE INFORMATION
This document contains information on a product under development at Advanced Micro Devices. The information
is intended to help you evaluate this product. AMD reserves the right to change or discontinue work on this proposed
product without notice.
Publication# 21522 Rev: A Amendment/0
Issue Date: January 1998
Refer to AMD’s Website (www.amd.com) for the latest information.
Am29LV004B
4 Megabit (512 K x 8-Bit)
CMOS 3.0 Volt-only Boot Sector Flash Memory
DISTINCTIVE CHARACTERISTICS
a73 Single power supply operation
— Full voltage range: 2.7 to 3.6 volt read and write
operations for battery-powered applications
— Regulated voltage range: 3.0 to 3.6 volt read and
write operations and for compatibility with high
performance 3.3 volt microprocessors
a73 Manufactured on 0.35 µm process technology
— Compatible with 0.5 µm Am29LV004 device
a73 High performance
— Full voltage range: access times as fast as 80 ns
— Regulated voltage range: access times as fast
as 70 ns
a73 Ultra low power consumption (typical values at
5 MHz)
— 200 nA Automatic Sleep mode current
— 200 nA standby mode current
— 7 mA read current
— 15 mA program/erase current
a73 Flexible sector architecture
— One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and
seven 64 Kbyte sectors
— 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
a73 Unlock Bypass Program Command
— Reduces overall programming time when
issuing multiple program command sequences
a73 Top or bottom boot block configurations
available
a73 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
a73 Minimum 1,000,000 write cycle guarantee per
sector
a73 Package option
— 40-pin TSOP
a73 Compatibility with JEDEC standards
— Pinout and software compatible with single-
power supply Flash
— Superior inadvertent write protection
a73 Data# Polling and toggle bits
— Provides a software method of detecting
program or erase operation completion
a73 Ready/Busy# pin (RY/BY#)
— Provides a hardware method of detecting
program or erase cycle completion
a73 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
a73 Hardware reset pin (RESET#)
— Hardware method to reset the device to reading
array data