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AM29LV640MU Datasheet
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Part AM29LV640MU
Description 64 Megabit (4 M x 16-Bit) MirrorBit 3.0 Volt-only Uniform Sector Flash Memory with
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Manufacture Advanced Micro Devices
Datasheet
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Advanced Micro Devices AM29LV640MU
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Advanced Micro Devices AM29LV640MU
ADVANCE INFORMATION
Am29LV640MU
64 Megabit (4 M x 16-Bit) MirrorBit
3.0 Volt-only Uniform Sector Flash Memory with
VersatileI/OControl
DISTINCTIVE CHARACTERISTICS
ARCHITECTURAL ADVANTAGES
Single power supply operation
— 3 V for read, erase, and program operations
VersatileI/Ocontrol
— Device generates data output voltages and tolerates
data input voltages on the CE# and DQ inputs/outputs
as determined by the voltage on the VIO pin; operates
from 1.65 to 3.6 V
Manufactured on 0.23 µm MirrorBit process
technology
SecSi(Secured Silicon) Sector region
— 128-word sector for permanent, secure identification
through an 8-word random Electronic Serial Number,
accessible through a command sequence
— May be programmed and locked at the factory or by
the customer
Flexible sector architecture
— One hundred twenty-eight 32 Kword sectors
Compatibility with JEDEC standards
— Provides pinout and software compatibility for
single-power supply flash, and superior inadvertent
write protection
Minimum 100,000 erase cycle guarantee per sector
20-year data retention at 125°C
PERFORMANCE CHARACTERISTICS
High performance
— 90 ns access time
— 25 ns page read times
— 0.5 s typical sector erase time
— 22 µs typical effective write buffer word programming
time: 16-word write buffer reduces overall
programming time for multiple-word/byte updates
— 4-word page read buffer
— 16-word write buffer
Low power consumption (typical values at 3.0 V, 5
MHz)
— 30 mA typical active read current
— 50 mA typical erase/program current
— 1 µA typical standby mode current
Package options
— 63-ball Fine-Pitch BGA
— 64-ball Fortified BGA
SOFTWARE & HARDWARE FEATURES
Software features
— Program Suspend & Resume: read other sectors
before programming operation is completed
— Erase Suspend & Resume: read/program other
sectors before an erase operation is completed
— Data# polling & toggle bits provide status
— Unlock Bypass Program command reduces overall
multiple-word programming time
— CFI (Common Flash Interface) compliant: allows host
system to identify and accommodate multiple flash
devices
Hardware features
— Sector Group Protection: hardware-level method of
preventing write operations within a sector group
— Temporary Sector Unprotect: VID-level method of
changing code in locked sectors
— ACC (high voltage) input accelerates programming
time for higher throughput during system production
— Hardware reset input (RESET#) resets device
— Ready/Busy# output (RY/BY#) indicates program or
erase cycle completion
This Data Sheet states AMD’s current technical specifications regarding the Products described herein. This Data
Sheet may be revised by subsequent versions or modifications due to changes in technical specifications.6/13/03
Publication# 25301 Rev: C Amendment/1
Issue Date: June 12, 2003
Refer to AMD’s Website (www.amd.com) for the latest information.



Advanced Micro Devices AM29LV640MU
ADVANCE INFORMATION
GENERAL DESCRIPTION
The Am29LV640MU is a 64 Mbit, 3.0 volt single power
supply flash memory device organized as 4,194,304
words. The device has a 16-bit only data bus, and can
be programmed either in the host system or in stan-
dard EPROM programmers.
An access time of 90, 100, 110, or 120 ns is available.
Note that each access time has a specific operating
voltage range (VCC) and an I/O voltage range (VIO), as
specified in the Product Selector Guide and the Order-
ing Information sections. The device is offered in a
63-ball Fine-Pitch BGA or 64-ball Fortified BGA pack-
age. Each device has separate chip enable (CE#),
write enable (WE#) and output enable (OE#) controls.
Each device requires only a single 3.0 volt power
supply for both read and write functions. In addition to
a VCC input, a high-voltage accelerated program
(ACC) input provides shorter programming times
through increased current. This feature is intended to
facilitate factory throughput during system production,
but may also be used in the field if desired.
The device is entirely command set compatible with
the JEDEC single-power-supply Flash standard.
Commands are written to the device using standard
microprocessor write timing. Write cycles also inter-
nally latch addresses and data needed for the pro-
gramming and erase operations.
The sector erase architecture allows memory sec-
tors to be erased and reprogrammed without affecting
the data contents of other sectors. The device is fully
erased when shipped from the factory.
Device programming and erasure are initiated through
command sequences. Once a program or erase oper-
ation has begun, the host system need only poll the
DQ7 (Data# Polling) or DQ6 (toggle) status bits or
monitor the Ready/Busy# (RY/BY#) output to deter-
mine whether the operation is complete. To facilitate
programming, an Unlock Bypass mode reduces com-
mand sequence overhead by requiring only two write
cycles to program data instead of four.
The VersatileI/O™ (VIO) control allows the host sys-
tem to set the voltage levels that the device generates
and tolerates on the CE# control input and DQ I/Os to
the same voltage level that is asserted on the VIO pin.
Refer to the Ordering Information section for valid VIO
options.
Hardware data protection measures include a low
VCC detector that automatically inhibits write opera-
tions during power transitions. The hardware sector
protection feature disables both program and erase
operations in any combination of sectors of memory.
This can be achieved in-system or via programming
equipment.
The Erase Suspend/Erase Resume feature allows
the host system to pause an erase operation in a
given sector to read or program any other sector and
then complete the erase operation. The Program
Suspend/Program Resume feature enables the host
system to pause a program operation in a given sector
to read any other sector and then complete the pro-
gram operation.
The hardware RESET# pin terminates any operation
in progress and resets the device, after which it is then
ready for a new operation. The RESET# pin may be
tied to the system reset circuitry. A system reset would
thus also reset the device, enabling the host system to
read boot-up firmware from the Flash memory device.
The device reduces power consumption in the
standby mode when it detects specific voltage levels
on CE# and RESET#, or when addresses have been
stable for a specified period of time.
The SecSi(Secured Silicon) Sector provides a
128-word area for code or data that can be perma-
nently protected. Once this sector is protected, no fur-
ther changes within the sector can occur.
AMD MirrorBit flash technology combines years of
Flash memory manufacturing experience to produce
the highest levels of quality, reliability and cost effec-
tiveness. The device electrically erases all bits within a
sector simultaneously via hot-hole assisted erase. The
data is programmed using hot electron injection.
2
Am29LV640MU
June 12, 2003







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