AMD AM29LV004BT-70RECB 4 megabit (512 k x 8-bit) cmos 3.0 volt-only boot sector flash memory Datasheet

ADVANCE INFORMATION
Am29LV004B
4 Megabit (512 K x 8-Bit)
CMOS 3.0 Volt-only Boot Sector Flash Memory
DISTINCTIVE CHARACTERISTICS
■ 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
■ Manufactured on 0.35 µm process technology
— Compatible with 0.5 µm Am29LV004 device
■ High performance
— Full voltage range: access times as fast as 80 ns
— Regulated voltage range: access times as fast
as 70 ns
■ 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
■ 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
■ 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 write cycle guarantee per
sector
■ Package option
— 40-pin TSOP
■ 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
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.
A D V A N C E
I N F O R M A T I O N
GENERAL DESCRIPTION
The Am29LV004B is an 4 Mbit, 3.0 volt-only Flash
memory organized as 524,288 bytes. The device is
offered in a 40-pin TSOP package. The byte-wide (x8)
data appears on DQ7–DQ0. This device requires only
a single, 3.0 volt VCC supply to perform read, program,
and erase operations. A standard EPROM programmer can also be used to program and erase the
device.
This device is manufactured using AMD’s 0.35 µm
process technology, and offers all the features and benefits of the Am29LV004, which was manufactured using
0 . 5 µ m p r o c e s s t e c h n o l o gy. I n a d d i t i o n , t h e
Am29LV004B features unlock bypass programming
and in-system sector protection/unprotection.
The standard device offers access times of 70, 80, 90,
and 120 ns, allowing high speed microprocessors to
operate without wait states. To eliminate bus contention
the device has separate chip enable (CE#), write
enable (WE#) and output enable (OE#) controls.
The device requires only a single 3.0 volt power supply for both read and write functions. Internally generated and regulated voltages are provided for the
program and erase operations.
The device is entirely command set compatible with the
JEDEC single-power-supply Flash standard. Commands are written to the command register using standard microprocessor write timings. Register contents
serve as input to an internal state-machine that controls the erase and programming circuitry. Write cycles
also internally latch addresses and data needed for the
programming and erase operations. Reading data out
of the device is similar to reading from other Flash or
EPROM devices.
Device programming occurs by executing the program
command sequence. This initiates the Embedded
Program algorithm—an internal algorithm that automatically times the program pulse widths and verifies
proper cell margin. The Unlock Bypass mode facilitates faster programming times by requiring only two
write cycles to program data instead of four.
Device erasure occurs by executing the erase command
sequence. This initiates the Embedded Erase algorithm—an internal algorithm that automatically preprograms the array (if it is not already programmed) before
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executing the erase operation. During erase, the device
automatically times the erase pulse widths and verifies
proper cell margin.
The host system can detect whether a program or
erase operation is complete by observing the RY/BY#
pin, or by reading the DQ7 (Data# Polling) and DQ6
(toggle) status bits. After a program or erase cycle has
been completed, the device is ready to read array data
or accept another command.
The sector erase architecture allows memory sectors
to be erased and reprogrammed without affecting the
data contents of other sectors. The device is fully
erased when shipped from the factory.
Hardware data protection measures include a low
VCC detector that automatically inhibits write operations during power transitions. The hardware sector
protection feature disables both program and erase
operations in any combination of the sectors of memory. This can be achieved in-system or via programming equipment.
The Erase Suspend feature enables the user to put
erase on hold for any period of time to read data from,
or program data to, any sector that is not selected for
erasure. True background erase can thus be achieved.
The hardware RESET# pin terminates any operation
in progress and resets the internal state machine to
reading array data. The RESET# pin may be tied to the
system reset circuitry. A system reset would thus also
reset the device, enabling the system microprocessor
to read the boot-up firmware from the Flash memory.
The device offers two power-saving features. When addresses have been stable for a specified amount of
time, the device enters the automatic sleep mode.
The system can also place the device into the standby
mode. Power consumption is greatly reduced in both
these modes.
AMD’s Flash technology combines years of Flash
memory manufacturing experience to produce the
highest levels of quality, reliability and cost effectiveness. The device electrically erases all bits within
a sector simultaneously via Fowler-Nordheim tunneling. The data is programmed using hot electron
injection.
Am29LV004B
A D V A N C E
I N F O R M A T I O N
PRODUCT SELECTOR GUIDE
Family Part Number
Speed Options
Am29LV004B
Regulated Voltage Range: VCC =3.0–3.6 V
-70R
Full Voltage Range: VCC = 2.7–3.6 V
-80
-90
-120
Max access time, ns (tACC)
70
80
90
120
Max CE# access time, ns (tCE)
70
80
90
120
Max OE# access time, ns (tOE)
30
30
35
50
Note: See “AC Characteristics” for full specifications.
BLOCK DIAGRAM
DQ0–DQ7
RY/BY#
VCC
Sector Switches
VSS
Erase Voltage
Generator
RESET#
WE#
Input/Output
Buffers
State
Control
Command
Register
PGM Voltage
Generator
Chip Enable
Output Enable
Logic
CE#
OE#
VCC Detector
Address Latch
STB
Timer
A0–A18
STB
Data
Latch
Y-Decoder
Y-Gating
X-Decoder
Cell Matrix
21522A-1
Am29LV004B
3
A D V A N C E
I N F O R M A T I O N
CONNECTION DIAGRAMS
A16
A15
A14
A13
A12
A11
A9
A8
WE#
RESET#
NC
RY/BY#
A18
A7
A6
A5
A4
A3
A2
A1
A17
VSS
NC
NC
A10
DQ7
DQ6
DQ5
DQ4
VCC
VCC
NC
DQ3
DQ2
DQ1
DQ0
CE#
VSS
CE#
A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
Standard TSOP
Reverse TSOP
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A17
VSS
NC
NC
A10
DQ7
DQ6
DQ5
DQ4
VCC
VCC
NC
DQ3
DQ2
DQ1
DQ0
OE#
VSS
CE#
A0
A16
A15
A14
A13
A12
A11
A9
A8
WE#
RESET#
NC
RY/BY#
A18
A7
A6
A5
A4
A3
A2
A1
21522A-2
4
Am29LV004B
A D V A N C E
I N F O R M A T I O N
PIN CONFIGURATION
A0–A18
LOGIC SYMBOL
= 19 addresses
19
DQ0–DQ7 = 8 data inputs/outputs
A0–A18
CE#
= Chip enable
OE#
= Output enable
WE#
= Write enable
CE#
RESET#
= Hardware reset pin, active low
OE#
RY/BY#
= Ready/Busy# output
WE#
VCC
= 3.0 volt-only single power supply
(see Product Selector Guide for speed
options and voltage supply tolerances)
RESET#
VSS
= Device ground
NC
= Pin not connected internally
8
DQ0–DQ7
RY/BY#
21522A-3
Am29LV004B
5
A D V A N C E
I N F O R M A T I O N
ORDERING INFORMATION
Standard Products
AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed by a combination of the elements below.
Am29LV004B
T
-70R
E
C
OPTIONAL PROCESSING
Blank = Standard Processing
B = Burn-in
(Contact an AMD representative for more information)
TEMPERATURE RANGE
C = Commercial (0°C to +70°C)
I = Industrial (–40°C to +85°C)
E = Extended (–55°C to +125°C)
PACKAGE TYPE
E
= 40-Pin Thin Small Outline Package (TSOP)
Standard Pinout (TS 040)
F
= 40-Pin Thin Small Outline Package (TSOP)
Reverse Pinout (TSR040)
SPEED OPTION
See Product Selector Guide and Valid Combinations
BOOT CODE SECTOR ARCHITECTURE
T = Top Sector
B = Bottom Sector
DEVICE NUMBER/DESCRIPTION
Am29LV004B
4 Megabit (512 K x 8-Bit) CMOS Flash Memory
3.0 Volt-only Read, Program, and Erase
Valid Combinations
Valid Combinations
Am29LV004BT-70R,
Am29LV004BB-70R
Valid Combinations list configurations planned to be supported in volume for this device. Consult the local AMD sales
office to confirm availability of specific valid combinations and
to check on newly released combinations.
EC, EI, FC, FI
Am29LV004BT-80,
Am29LV004BB-80
Am29LV004BT-90,
Am29LV004BB-90
EC, EI, EE, FC, FI, FE
Am29LV004BT-120,
Am29LV004BB-120
Trademarks
Copyright © 1998 Advanced Micro Devices, Inc. All rights reserved.
AMD, the AMD logo, and combinations thereof are registered trademarks of Advanced Micro Devices, Inc.
Product names used in this publication are for identification purposes only and may be trademarks of their respective companies.
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Am29LV004B
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