AMD AM29LV160BT-90SD 16 megabit (2 m x 8-bit/1 m x 16-bit) cmos 3.0 volt-only boot sector flash memory Datasheet

Am29LV160B
Data Sheet
RETIRED
PRODUCT
This product has been retired and is not recommended for designs. For new and current designs,
S29AL016D supersedes Am29LV160B and is the factory-recommended migration path. Please refer to
the S29AL016D datasheet for specifications and ordering information. Availability of this document is
retained for reference and historical purposes only.
June 2005
The following document specifies Spansion memory products that are now offered by both Advanced
Micro Devices and Fujitsu. Although the document is marked with the name of the company that
originally developed the specification, these products will be offered to customers of both AMD and
Fujitsu.
Continuity of Specifications
There is no change to this datasheet as a result of offering the device as a Spansion product. Any
changes that have been made are the result of normal datasheet improvement and are noted in the
document revision summary, where supported. Future routine revisions will occur when appropriate, and changes will be noted in a revision summary.
For More Information
Please contact your local AMD or Fujitsu sales office for additional information about Spansion
memory solutions.
Publication Number 21358
Revision H
Amendment 4
Issue Date June 6, 2005
THIS PAGE LEFT INTENTIONALLY BLANK.
Am29LV160B
16 Megabit (2 M x 8-Bit/1 M x 16-Bit)
CMOS 3.0 Volt-only Boot Sector Flash Memory
This product has been retired and is not recommended for designs. For new and current designs, S29AL016D supersedes Am29LV160B and is the factory-recommended migration path.
Please refer to the S29AL016D datasheet for specifications and ordering information. Availability of this document is retained for reference and historical purposes only.
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 0.32 µm process technology
■ High performance
■ 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
— Full voltage range: access times as fast as 80 ns
■ 20-year data retention at 125°C
— Regulated voltage range: access times as fast as
70 ns
■ Package option
■ Ultra low power consumption (typical values at
5 MHz)
— 200 nA Automatic Sleep mode current
— 200 nA standby mode current
— 9 mA read current
— 20 mA program/erase current
■ Flexible sector architecture
— One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and
thirty-one 64 Kbyte sectors (byte mode)
— One 8 Kword, two 4 Kword, one 16 Kword, and
thirty-one 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
— Reliable operation for the life of the system
— 48-ball FBGA
— 48-pin TSOP
— 44-pin SO
■ CFI (Common Flash Interface) compliant
— Provides device-specific information to the
system, allowing host software to easily
reconfigure for different Flash devices
■ 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 (not available
on 44-pin SO)
■ 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 Data Sheet states AMD’s current technical specifications regarding the Product described herein. This Data
Sheet may be revised by subsequent versions or modifications due to changes in technical specifications.
Publication# 21358 Rev: H Amendment/4
Issue Date: June 6, 2005
GENERAL DESCRIPTION
The Am29LV160B is a 16 Mbit, 3.0 Volt-only Flash memory
organized as 2,097,152 bytes or 1,048,576 words. The device is offered in 48-ball FBGA, 44-pin SO, and 48-pin
TSOP 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 in-system
with the standard system 3.0 volt VCC supply. A 12.0 V VPP
or 5.0 VCC are not required for write or erase operations.
The device can also be programmed in standard
EPROM programmers.
The 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 Am29LV160B 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 executing the erase operation. During erase,
the device automatically times the erase pulse widths
and verifies proper cell margin.
2
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/Erase Resume 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.
Am29LV160B
TABLE OF CONTENTS
Distinctive Characteristics . . . . . . . . . . . . . . . . . . . 1
General Description . . . . . . . . . . . . . . . . . . . . . . . . 2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 5
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . 6
Special Handling Instructions ................................................... 7
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 9
Standard Products .................................................................... 9
Device Bus Operations . . . . . . . . . . . . . . . . . . . . . 10
Table 1. Am29LV160B Device Bus Operations .............................. 10
Word/Byte Configuration ........................................................ 10
Requirements for Reading Array Data ................................... 10
Writing Commands/Command Sequences ............................ 10
Program and Erase Operation Status .................................... 11
Standby Mode ........................................................................ 11
Automatic Sleep Mode ........................................................... 11
RESET#: Hardware Reset Pin ............................................... 12
Output Disable Mode .............................................................. 12
Table 2. Sector Address Tables (Am29LV160BT).......................... 13
Table 3. Sector Address Tables (Am29LV160BB).......................... 14
Autoselect Mode ..................................................................... 15
Table 4. Am29LV160B Autoselect Codes (High Voltage Method).. 15
Sector Protection/Unprotection ............................................... 15
Temporary Sector Unprotect .................................................. 16
Figure 1. Temporary Sector Unprotect Operation........................... 16
In-System Sector Protect/Unprotect Algorithms 17
Common Flash Memory Interface (CFI) . . . . . . . 18
Table 5. CFI Query Identification String .......................................... 18
Table 6. System Interface String..................................................... 19
Table 7. Device Geometry Definition .............................................. 19
Table 8. Primary Vendor-Specific Extended Query ........................ 20
Hardware Data Protection ...................................................... 20
Low VCC Write Inhibit .............................................................. 20
Write Pulse “Glitch” Protection ............................................... 20
Logical Inhibit .......................................................................... 20
Power-Up Write Inhibit ............................................................ 20
Command Definitions . . . . . . . . . . . . . . . . . . . . . . 21
Reading Array Data ................................................................ 21
Reset Command ..................................................................... 21
Autoselect Command Sequence ............................................ 21
Word/Byte Program Command Sequence ............................. 21
Unlock Bypass Command Sequence ..................................... 22
Figure 3. Program Operation .......................................................... 22
Chip Erase Command Sequence ........................................... 22
Sector Erase Command Sequence ........................................ 23
Erase Suspend/Erase Resume Commands ........................... 23
Figure 4. Erase Operation............................................................... 24
Table 9. Am29LV160B Command Definitions................................. 25
Write Operation Status . . . . . . . . . . . . . . . . . . . . . 26
DQ7: Data# Polling ................................................................. 26
Figure 5. Data# Polling Algorithm ................................................... 26
RY/BY#: Ready/Busy# ........................................................... 27
DQ6: Toggle Bit I .................................................................... 27
DQ2: Toggle Bit II ................................................................... 27
Reading Toggle Bits DQ6/DQ2 .............................................. 27
Figure 6. Toggle Bit Algorithm........................................................ 28
DQ3: Sector Erase Timer ....................................................... 29
Table 10. Write Operation Status................................................... 29
Absolute Maximum Ratings . . . . . . . . . . . . . . . . 30
Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . 30
Commercial (C) Devices ......................................................... 30
Industrial (I) Devices ............................................................... 30
Extended (E) Devices ............................................................. 30
VCC Supply Voltages .............................................................. 30
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 32
CMOS Compatible .................................................................. 32
Zero Power Flash ................................................................... 33
Figure 9. ICC1 Current vs. Time (Showing Active and Automatic Sleep
Currents) ........................................................................................ 33
Figure 10. Typical ICC1 vs. Frequency ........................................... 33
Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 11. Test Setup..................................................................... 34
Table 11. Test Specifications ......................................................... 34
Key to Switching Waveforms . . . . . . . . . . . . . . . 34
Figure 12. Input Waveforms and Measurement Levels ................. 34
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 35
Read Operations .................................................................... 35
Figure 13. Read Operations Timings ............................................. 35
Hardware Reset (RESET#) .................................................... 36
Figure 14. RESET# Timings .......................................................... 36
Word/Byte Configuration (BYTE#) ........................................ 37
Figure 15. BYTE# Timings for Read Operations............................ 37
Figure 16. BYTE# Timings for Write Operations............................ 37
Erase/Program Operations ..................................................... 38
Figure 17. Program Operation Timings..........................................
Figure 18. Chip/Sector Erase Operation Timings ..........................
Figure 19. Data# Polling Timings (During Embedded Algorithms).
Figure 20. Toggle Bit Timings (During Embedded Algorithms)......
Figure 21. DQ2 vs. DQ6 for Erase and Erase
Suspend Operations ......................................................................
39
40
41
41
42
Temporary Sector Unprotect .................................................. 42
Figure 22. Sector Protect/Unprotect Timing Diagram .................... 43
Alternate CE# Controlled Erase/Program Operations ............ 44
Figure 23. Alternate CE# Controlled Write Operation Timings ...... 45
Erase and Programming Performance . . . . . . . 46
Latchup Characteristics . . . . . . . . . . . . . . . . . . . 46
TSOP and SO Pin Capacitance . . . . . . . . . . . . . . 46
Data Retention . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 47
TS 048—48-Pin Standard TSOP (measured in millimeters) .. 47
TSR048—48-Pin Reverse TSOP (measured in millimeters) .. 49
FBC048—48-Ball Fine-Pitch Ball Grid Array (FBGA) 8 x 9 mm
(measured in millimeters) ....................................................... 50
SO 044—44-Pin Small Outline Package (measured in millimeters) ........................................................................................ 51
Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 52
Revision F (January 1998) ...................................................... 52
Revision F+1 ........................................................................... 52
Revision F+2 ........................................................................... 52
Revision G (January 1999) ..................................................... 52
Revision G+1 (February 1999) ............................................... 52
Revision H (November 23, 1999) ........................................... 52
Revision H+1 (February 22, 2000) ......................................... 53
Am29LV160B
3
Revision H+2 (June 11, 2004) ................................................ 53
Revision H+3 (September 17, 2004) ...................................... 53
4
Am29LV160B
PRODUCT SELECTOR GUIDE
Family Part Number
Speed Option
Am29LV160B
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–DQ15 (A-1)
RY/BY#
VCC
Sector Switches
VSS
Erase Voltage
Generator
RESET#
WE#
BYTE#
Input/Output
Buffers
State
Control
Command
Register
PGM Voltage
Generator
Chip Enable
Output Enable
Logic
CE#
OE#
VCC Detector
Address Latch
STB
Timer
A0–A19
STB
Data
Latch
Y-Decoder
Y-Gating
X-Decoder
Cell Matrix
21358H-1
Am29LV160B
5
CONNECTION DIAGRAMS
A15
A14
A13
A12
A11
A10
A9
A8
A19
NC
WE#
RESET#
NC
NC
RY/BY#
A18
A17
A7
A6
A5
A4
A3
A2
A1
A16
BYTE#
VSS
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ5
DQ12
DQ4
VCC
DQ11
DQ3
DQ10
DQ2
DQ9
DQ1
DQ8
DQ0
OE#
VSS
CE#
A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Standard TSOP
Reverse TSOP
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
A16
BYTE#
VSS
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ5
DQ12
DQ4
VCC
DQ11
DQ3
DQ10
DQ2
DQ9
DQ1
DQ8
DQ0
OE#
VSS
CE#
A0
A15
A14
A13
A12
A11
A10
A9
A8
A19
NC
WE#
RESET#
NC
NC
RY/BY#
A18
A17
A7
A6
A5
A4
A3
A2
A1
21358H-2
6
Am29LV160B
CONNECTION DIAGRAMS
RESET#
A18
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE#
VSS
OE#
DQ0
DQ8
DQ1
DQ9
DQ2
DQ10
DQ3
DQ11
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
SO
WE#
A19
A8
A9
A10
A11
A12
A13
A14
A15
A16
BYTE#
VSS
DQ15/A-1
DQ7
DQ14
DQ6
DQ13
DQ5
DQ12
DQ4
VCC
FBGA
Top View, Balls Facing Down
A6
B6
C6
D6
E6
F6
G6
A13
A12
A14
A15
A16
A5
B5
C5
D5
E5
F5
G5
H5
A9
A8
A10
A11
DQ7
DQ14
DQ13
DQ6
A4
B4
C4
D4
E4
F4
G4
H4
WE#
RESET#
NC
A19
DQ5
DQ12
VCC
DQ4
A3
B3
C3
D3
E3
F3
G3
H3
RY/BY#
NC
A18
NC
DQ2
DQ10
DQ11
DQ3
A2
B2
C2
D2
E2
F2
G2
H2
A7
A17
A6
A5
DQ0
DQ8
DQ9
DQ1
A1
B1
C1
D1
E1
F1
G1
H1
A3
A4
A2
A1
A0
CE#
OE#
VSS
BYTE# DQ15/A-1
H6
VSS
21358H-3
Special Handling Instructions
Special handling is required for Flash Memor y
products in FBGA packages.
Flash memory devices in FBGA packages may be
damaged if exposed to ultrasonic cleaning methods.
The package and/or data integrity may be compromised
if the package body is exposed to temperatures above
150°C for prolonged periods of time.
Am29LV160B
7
PIN CONFIGURATION
A0–A19
LOGIC SYMBOL
=20 addresses
20
DQ0–DQ14 =15 data inputs/outputs
A0–A19
DQ15/A-1
=DQ15 (data input/output, word mode),
A-1 (LSB address input, byte mode)
BYTE#
=Selects 8-bit or 16-bit mode
CE#
=Chip enable
CE#
OE#
=Output enable
OE#
WE#
=Write enable
RESET#
=Hardware reset pin
RY/BY#
=Ready/Busy output
(N/A SO 044)
DQ0–DQ15
(A-1)
WE#
RESET#
BYTE#
VCC
=3.0 volt-only single power supply
(see Product Selector Guide for speed
options and voltage supply tolerances)
VSS
=Device ground
NC
=Pin not connected internally
8
16 or 8
Am29LV160B
RY/BY#
(N/A SO 044)
21358H-4
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.
Am29LV160B
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)
D
=Commercial (0°C to +70°C) with Pb-free package
I
= Industrial (–40°C to +85°C)
F
= Industrial (–40°C to +85°C) with Pb-free package
E
=Extended (–55°C to +125°C)
K
=Extended (–55°C to +125°C) with Pb-free package
PACKAGE TYPE
E
=48-Pin Thin Small Outline Package (TSOP)
Standard Pinout (TS 048)
F
=48-Pin Thin Small Outline Package (TSOP)
Reverse Pinout (TSR048)
S
=44-Pin Small Outline Package (SO 044)
WC =48-ball Fine-Pitch Ball Grid Array (FBGA)
0.80 mm pitch, 8 x 9 mm package (FBC048)
SPEED OPTION
See Product Selector Guide and Valid Combinations
BOOT CODE SECTOR ARCHITECTURE
T
= Top Sector
B
= Bottom Sector
DEVICE NUMBER/DESCRIPTION
Am29LV160B
16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS Flash Memory
3.0 Volt-only Read, Program and Erase
Valid Combinations For TSOP and SO Packages
AM29LV160BT-70R,
AM29LV160BB-70R
EC, FC, SC,
ED, SD
Order Number
AM29LV160BT-70R,
AM29LV160BB-70R
AM29LV160BT-80,
AM29LV160BB-80
AM29LV160BT-80,
AM29LV160BB-80
EC, EI, EE, ED, EF, EK
FC, FI, FE,
SC, SI, SE, SD, SF, SK
AM29LV160BT-90,
AM29LV160BB-90
Valid Combinations for FBGA Packages
AM29LV160BT-90,
AM29LV160BB-90
AM29LV160BT-120,
AM29LV160BB-120
AM29LV160BT-120,
AM29LV160BB-120
Valid Combinations
Package Marking
WCC,
WCD
WCC,
WCI,
WCE,
WCD,
WCF,
WCK
L160BT70R,
L160BB70R
C, D
L160BT80V,
L160BB80V
L160BT90V,
L160BB90V
C, I,
E, D, F,
K
L160BT12V,
L160BB12V
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.
Am29LV160B
9
DEVICE BUS OPERATIONS
This section describes the requirements and use of
the device bus operations, which are initiated through
the internal command register. The command register
itself does not occupy any addressable memory location. The register is composed of latches that store the
commands, along with the address and data information needed to execute the command. The contents of
Table 1.
the register serve as inputs to the internal state machine. The state machine outputs dictate the function
of the device. Table 1 lists the device bus operations,
the inputs and control levels they require, and the resulting output. The following subsections describe
each of these operations in further detail.
Am29LV160B Device Bus Operations
DQ8–DQ15
Operation
CE#
OE# WE# RESET#
Addresses
(Note 1)
DQ0–
DQ7
BYTE#
= VIH
BYTE#
= VIL
Read
L
L
H
H
AIN
DOUT
DOUT
Write
L
H
L
H
AIN
DIN
DIN
DQ8–DQ14 = High-Z,
DQ15 = A-1
VCC ±
0.3 V
X
X
VCC ±
0.3 V
X
High-Z
High-Z
High-Z
Output Disable
L
H
H
H
X
High-Z
High-Z
High-Z
Reset
X
X
X
L
X
High-Z
High-Z
High-Z
DIN
X
X
Standby
Sector Protect (Note 2)
L
H
L
VID
Sector Address,
A6 = L, A1 = H,
A0 = L
Sector Unprotect (Note 2)
L
H
L
VID
Sector Address,
A6 = H, A1 = H,
A0 = L
DIN
X
X
Temporary Sector
Unprotect
X
X
X
VID
AIN
DIN
DIN
High-Z
Legend:
L = Logic Low = VIL, H = Logic High = VIH, VID = 12.0 ± 0.5 V, X = Don’t Care, AIN = Address In, DIN = Data In, DOUT = Data Out
Notes:
1. Addresses are A19:A0 in word mode (BYTE# = VIH), A19:A-1 in byte mode (BYTE# = VIL).
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the “Sector
Protection/Unprotection” section.
Word/Byte Configuration
The BYTE# pin controls whether the device data I/O
pins DQ15–DQ0 operate in the byte or word configuration. If the BYTE# pin is set at logic ‘1’, the device is in
word configuration, DQ15–DQ0 are active and controlled by CE# and OE#.
If the BYTE# pin is set at logic ‘0’, the device is in byte
configuration, and only data I/O pins DQ0–DQ7 are
active and controlled by CE# and OE#. The data I/O
pins DQ8–DQ14 are tri-stated, and the DQ15 pin is
used as an input for the LSB (A-1) address function.
Requirements for Reading Array Data
To read array data from the outputs, the system must
drive the CE# and OE# pins to VIL. CE# is the power
control and selects the device. OE# is the output control
and gates array data to the output pins. WE# should remain at VIH. The BYTE# pin determines whether the
device outputs array data in words or bytes.
10
The internal state machine is set for reading array
data upon device power-up, or after a hardware reset. This ensures that no spurious alteration of the
memory content occurs during the power transition.
No command is necessary in this mode to obtain
array data. Standard microprocessor read cycles that
assert valid addresses on the device address inputs
produce valid data on the device data outputs. The
device remains enabled for read access until the
command register contents are altered.
See “Reading Array Data” for more information. Refer
to the AC Read Operations table for timing specifications and to Figure 13 for the timing diagram. ICC1 in
the DC Characteristics table represents the active current specification for reading array data.
Writing Commands/Command Sequences
To write a command or command sequence (which includes programming data to the device and erasing
Am29LV160B
sectors of memory), the system must drive WE# and
CE# to VIL, and OE# to VIH.
For program operations, the BYTE# pin determines
whether the device accepts program data in bytes or
words. Refer to “Word/Byte Configuration” for more
information.
The device features an Unlock Bypass mode to facilitate faster programming. Once the device enters the
Unlock Bypass mode, only two write cycles are required to program a word or byte, instead of four. The
“Word/Byte Program Command Sequence” section
has details on programming data to the device using
b o t h s t a n d a r d a n d U n l o ck B y p a s s c o m m a n d
sequences.
An erase operation can erase one sector, multiple sectors, or the entire device. Tables 2 and 3 indicate the
address space that each sector occupies. A “sector
address” consists of the address bits required to
uniquely select a sector. The “Command Definitions”
section has details on erasing a sector or the entire
chip, or suspending/resuming the erase operation.
After the system writes the autoselect command sequence, the device enters the autoselect mode. The
system can then read autoselect codes from the internal register (which is separate from the memory array)
on DQ7–DQ0. Standard read cycle timings apply in
this mode. Refer to the “Autoselect Mode” and “Autoselect Command Sequence” sections for more
information.
ICC2 in the DC Characteristics table represents the active current specification for the write mode. The “AC
Characteristics” section contains timing specification
tables and timing diagrams for write operations.
Program and Erase Operation Status
During an erase or program operation, the system
may check the status of the operation by reading the
status bits on DQ7–DQ0. Standard read cycle timings
and ICC read specifications apply. Refer to “Write Operation Status” for more information, and to “AC
Characteristics” for timing diagrams.
Standby Mode
When the system is not reading or writing to the device, it can place the device in the standby mode. In
this mode, current consumption is greatly reduced,
and the outputs are placed in the high impedance
state, independent of the OE# input.
The device enters the CMOS standby mode when the
CE# and RESET# pins are both held at VCC ± 0.3 V.
(Note that this is a more restricted voltage range than
V IH .) If CE# and RESET# are held at V IH , but not
within VCC ± 0.3 V, the device will be in the standby
mode, but the standby current will be greater. The device requires standard access time (t CE ) for read
access when the device is in either of these standby
modes, before it is ready to read data.
If the device is deselected during erasure or programming, the device draws active current until the
operation is completed.
In the DC Characteristics table, ICC3 and ICC4 represents the standby current specification.
Automatic Sleep Mode
The automatic sleep mode minimizes Flash device
energy consumption. The device automatically
enables this mode when addresses remain stable for
tACC + 30 ns. The automatic sleep mode is
independent of the CE#, WE#, and OE# control
signals. Standard address access timings provide new
data when addresses are changed. While in sleep
mode, output data is latched and always available to
the system. I CC4 in the DC Characteristics table
repr esen ts th e automatic sleep mo de cu rren t
specification.
Am29LV160B
11
RESET#: Hardware Reset Pin
The RESET# pin provides a hardware method of resetting the device to reading array data. When the
system drives the RESET# pin to VIL for at least a period of tRP, the device immediately terminates any
operation in progress, tristates all data output pins,
and ignores all read/write attempts for the duration of
the RESET# pulse. The device also resets the internal
state machine to reading array data. The operation
that was interrupted should be reinitiated once the device is ready to accept another command sequence,
to ensure data integrity.
Current is reduced for the duration of the RESET#
pulse. When RESET# is held at VSS±0.3 V, the device
draws CMOS standby current (I CC4 ). If RESET# is
held at VIL but not within VSS±0.3 V, the standby current will be greater.
The RESET# pin may be tied to the system reset circuitry. A system reset would thus also reset the Flash
12
memory, enabling the system to read the boot-up firmware from the Flash memory.
If RESET# is asserted during a program or erase operation, the RY/BY# pin remains a “0” (busy) until the
internal reset operation is complete, which requires a
time of t READY (during Embedded Algorithms). The
system can thus monitor RY/BY# to deter mine
whether the reset operation is complete. If RESET#
is asserted when a program or erase operation is not
executing (RY/BY# pin is “1”), the reset operation is
completed within a time of tREADY (not during Embedded Algorithms). The system can read data tRH after
the RESET# pin returns to VIH.
Refer to the AC Characteristics tables for RESET# parameters and to Figure 14 for the timing diagram.
Output Disable Mode
When the OE# input is at VIH, output from the device is
disabled. The output pins are placed in the high impedance state.
Am29LV160B
Table 2.
Sector Address Tables (Am29LV160BT)
Sector
A19
A18
A17
A16
A15
A14
A13
A12
Sector Size
(Kbytes/
Kwords)
Address Range (in hexadecimal)
SA0
0
0
0
0
0
X
X
X
64/32
000000–00FFFF
00000–07FFF
SA1
0
0
0
0
1
X
X
X
64/32
010000–01FFFF
08000–0FFFF
SA2
0
0
0
1
0
X
X
X
64/32
020000–02FFFF
10000–17FFF
SA3
0
0
0
1
1
X
X
X
64/32
030000–03FFFF
18000–1FFFF
SA4
0
0
1
0
0
X
X
X
64/32
040000–04FFFF
20000–27FFF
SA5
0
0
1
0
1
X
X
X
64/32
050000–05FFFF
28000–2FFFF
SA6
0
0
1
1
0
X
X
X
64/32
060000–06FFFF
30000–37FFF
SA7
0
0
1
1
1
X
X
X
64/32
070000–07FFFF
38000–3FFFF
SA8
0
1
0
0
0
X
X
X
64/32
080000–08FFFF
40000–47FFF
SA9
0
1
0
0
1
X
X
X
64/32
090000–09FFFF
48000–4FFFF
SA10
0
1
0
1
0
X
X
X
64/32
0A0000–0AFFFF
50000–57FFF
SA11
0
1
0
1
1
X
X
X
64/32
0B0000–0BFFFF
58000–5FFFF
SA12
0
1
1
0
0
X
X
X
64/32
0C0000–0CFFFF
60000–67FFF
SA13
0
1
1
0
1
X
X
X
64/32
0D0000–0DFFFF
68000–6FFFF
SA14
0
1
1
1
0
X
X
X
64/32
0E0000–0EFFFF
70000–77FFF
SA15
0
1
1
1
1
X
X
X
64/32
0F0000–0FFFFF
78000–7FFFF
SA16
1
0
0
0
0
X
X
X
64/32
100000–10FFFF
80000–87FFF
SA17
1
0
0
0
1
X
X
X
64/32
110000–11FFFF
88000–8FFFF
SA18
1
0
0
1
0
X
X
X
64/32
120000–12FFFF
90000–97FFF
SA19
1
0
0
1
1
X
X
X
64/32
130000–13FFFF
98000–9FFFF
SA20
1
0
1
0
0
X
X
X
64/32
140000–14FFFF
A0000–A7FFF
SA21
1
0
1
0
1
X
X
X
64/32
150000–15FFFF
A8000–AFFFF
SA22
1
0
1
1
0
X
X
X
64/32
160000–16FFFF
B0000–B7FFF
SA23
1
0
1
1
1
X
X
X
64/32
170000–17FFFF
B8000–BFFFF
SA24
1
1
0
0
0
X
X
X
64/32
180000–18FFFF
C0000–C7FFF
SA25
1
1
0
0
1
X
X
X
64/32
190000–19FFFF
C8000–CFFFF
SA26
1
1
0
1
0
X
X
X
64/32
1A0000–1AFFFF
D0000–D7FFF
SA27
1
1
0
1
1
X
X
X
64/32
1B0000–1BFFFF
D8000–DFFFF
SA28
1
1
1
0
0
X
X
X
64/32
1C0000–1CFFFF
E0000–E7FFF
SA29
1
1
1
0
1
X
X
X
64/32
1D0000–1DFFFF
E8000–EFFFF
SA30
1
1
1
1
0
X
X
X
64/32
1E0000–1EFFFF
F0000–F7FFF
SA31
1
1
1
1
1
0
X
X
32/16
1F0000–1F7FFF
F8000–FBFFF
SA32
1
1
1
1
1
1
0
0
8/4
1F8000–1F9FFF
FC000–FCFFF
SA33
1
1
1
1
1
1
0
1
8/4
1FA000–1FBFFF
FD000–FDFFF
SA34
1
1
1
1
1
1
1
X
16/8
1FC000–1FFFFF
FE000–FFFFF
Byte Mode (x8)
Word Mode (x16)
Note: Address range is A19:A-1 in byte mode and A19:A0 in word mode. See “Word/Byte Configuration” section.
Am29LV160B
13
Table 3.
Sector Address Tables (Am29LV160BB)
Sector
A19
A18
A17
A16
A15
A14
A13
A12
Sector Size
(Kbytes/
Kwords)
Address Range (in hexadecimal)
SA0
0
0
0
0
0
0
0
X
16/8
000000–003FFF
00000–01FFF
SA1
0
0
0
0
0
0
1
0
8/4
004000–005FFF
02000–02FFF
SA2
0
0
0
0
0
0
1
1
8/4
006000–007FFF
03000–03FFF
SA3
0
0
0
0
0
1
X
X
32/16
008000–00FFFF
04000–07FFF
SA4
0
0
0
0
1
X
X
X
64/32
010000–01FFFF
08000–0FFFF
SA5
0
0
0
1
0
X
X
X
64/32
020000–02FFFF
10000–17FFF
SA6
0
0
0
1
1
X
X
X
64/32
030000–03FFFF
18000–1FFFF
SA7
0
0
1
0
0
X
X
X
64/32
040000–04FFFF
20000–27FFF
SA8
0
0
1
0
1
X
X
X
64/32
050000–05FFFF
28000–2FFFF
SA9
0
0
1
1
0
X
X
X
64/32
060000–06FFFF
30000–37FFF
SA10
0
0
1
1
1
X
X
X
64/32
070000–07FFFF
38000–3FFFF
SA11
0
1
0
0
0
X
X
X
64/32
080000–08FFFF
40000–47FFF
SA12
0
1
0
0
1
X
X
X
64/32
090000–09FFFF
48000–4FFFF
SA13
0
1
0
1
0
X
X
X
64/32
0A0000–0AFFFF
50000–57FFF
SA14
0
1
0
1
1
X
X
X
64/32
0B0000–0BFFFF
58000–5FFFF
SA15
0
1
1
0
0
X
X
X
64/32
0C0000–0CFFFF
60000–67FFF
SA16
0
1
1
0
1
X
X
X
64/32
0D0000–0DFFFF
68000–6FFFF
SA17
0
1
1
1
0
X
X
X
64/32
0E0000–0EFFFF
70000–77FFF
SA18
0
1
1
1
1
X
X
X
64/32
0F0000–0FFFFF
78000–7FFFF
SA19
1
0
0
0
0
X
X
X
64/32
100000–10FFFF
80000–87FFF
SA20
1
0
0
0
1
X
X
X
64/32
110000–11FFFF
88000–8FFFF
SA21
1
0
0
1
0
X
X
X
64/32
120000–12FFFF
90000–97FFF
SA22
1
0
0
1
1
X
X
X
64/32
130000–13FFFF
98000–9FFFF
SA23
1
0
1
0
0
X
X
X
64/32
140000–14FFFF
A0000–A7FFF
SA24
1
0
1
0
1
X
X
X
64/32
150000–15FFFF
A8000–AFFFF
SA25
1
0
1
1
0
X
X
X
64/32
160000–16FFFF
B0000–B7FFF
SA26
1
0
1
1
1
X
X
X
64/32
170000–17FFFF
B8000–BFFFF
SA27
1
1
0
0
0
X
X
X
64/32
180000–18FFFF
C0000–C7FFF
SA28
1
1
0
0
1
X
X
X
64/32
190000–19FFFF
C8000–CFFFF
SA29
1
1
0
1
0
X
X
X
64/32
1A0000–1AFFFF
D0000–D7FFF
SA30
1
1
0
1
1
X
X
X
64/32
1B0000–1BFFFF
D8000–DFFFF
SA31
1
1
1
0
0
X
X
X
64/32
1C0000–1CFFFF
E0000–E7FFF
SA32
1
1
1
0
1
X
X
X
64/32
1D0000–1DFFFF
E8000–EFFFF
SA33
1
1
1
1
0
X
X
X
64/32
1E0000–1EFFFF
F0000–F7FFF
SA34
1
1
1
1
1
X
X
X
64/32
1F0000–1FFFFF
F8000–FFFFF
Byte Mode (x8)
Word Mode (x16)
Note: Address range is A19:A-1 in byte mode and A19:A0 in word mode. See the “Word/Byte Configuration” section.
14
Am29LV160B
Autoselect Mode
Table 4. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Tables 2 and 3). Table
4 shows the remaining address bits that are don’t
care. When all necessary bits have been set as required, the programming equipment may then read the
corresponding identifier code on DQ7-DQ0.
The autoselect mode provides manufacturer and device identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equipm e n t t o a u t o m a t i c a l l y m a t c h a d ev i c e t o b e
programmed with its corresponding programming algorithm. However, the autoselect codes can also be
accessed in-system through the command register.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Table 9. This method
does not require VID. See “Command Definitions” for
details on using the autoselect mode.
When using programming equipment, the autoselect
mode requires VID (11.5 V to 12.5 V) on address pin
A9. Address pins A6, A1, and A0 must be as shown in
Table 4.
Description
Mode
Manufacturer ID: AMD
Am29LV160B Autoselect Codes (High Voltage Method)
A19 A11
to
to
WE# A12 A10
CE#
OE#
L
L
H
L
L
H
Device ID:
Am29LV160B
(Top Boot Block)
Word
Byte
L
L
H
Device ID:
Am29LV160B
(Bottom Boot Block)
Word
L
L
H
Sector Protection Verification
L
L
L
L
A1
A0
DQ8
to
DQ15
DQ7
to
DQ0
X
01h
22h
C4h
X
C4h
22h
49h
X
49h
X
01h
(protected)
X
00h
(unprotected)
X
VID
X
L
X
L
L
X
X
VID
X
L
X
L
H
VID
X
X
H
H
A6
A5
to
A2
X
X
Byte
A9
A8
to
A7
SA
X
VID
X
L
L
X
X
L
H
H
L
L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
Note: The autoselect codes may also be accessed in-system via command sequences. See Table 9.
Sector Protection/Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hardware sector unprotection feature re-enables both
program and erase operations in previously protected
sectors.
The device is shipped with all sectors unprotected.
AMD offers the option of programming and protecting
sectors at its factory prior to shipping the device
through AMD’s ExpressFlash™ Service. Contact an
AMD representative for details.
It is possible to determine whether a sector is protected or unprotected. See “Autoselect Mode” for
details.
The primary method requires VID on the RESET# pin
only, and can be implemented either in-system or via
programming equipment. Figure 2 shows the algorithms and Figure 22 shows the timing diagram. This
method uses standard microprocessor bus cycle timing. For sector unprotect, all unprotected sectors must
first be protected prior to the first sector unprotect
write cycle.
The alternate method intended only for programming
equipment requires VID on address pin A9 and OE#.
This method is compatible with programmer routines
written for earlier 3.0 volt-only AMD flash devices. Details on this method are provided in a supplement,
publication number 21468. Contact an AMD representative to request a copy.
Sector protection/unprotection can be implemented
via two methods.
Am29LV160B
15
Temporary Sector Unprotect
This feature allows temporary unprotection of previously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RESET# pin to VID. During this mode, formerly protected
sectors can be programmed or erased by selecting the
sector addresses. Once VID is removed from the RESET# pin, all the previously protected sectors are
protected again. Figure shows the algorithm, and Figure 22 shows the timing diagrams, for this feature.
START
RESET# = VID
(Note 1)
Perform Erase or
Program Operations
RESET# = VIH
Temporary Sector
Unprotect Completed
(Note 2)
21358H-5
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once
again.
Figure 1.
16
Am29LV160B
Temporary Sector Unprotect Operation
START
START
Protect all sectors:
The indicated portion
of the sector protect
algorithm must be
performed for all
unprotected sectors
prior to issuing the
first sector
unprotect address
PLSCNT = 1
RESET# = VID
Wait 1 μs
Temporary Sector
Unprotect Mode
No
PLSCNT = 1
RESET# = VID
Wait 1 μs
No
First Write
Cycle = 60h?
First Write
Cycle = 60h?
Yes
Yes
Set up sector
address
No
All sectors
protected?
Sector Protect:
Write 60h to sector
address with
A6 = 0, A1 = 1,
A0 = 0
Yes
Set up first sector
address
Sector Unprotect:
Write 60h to sector
address with
A6 = 1, A1 = 1,
A0 = 0
Wait 150 µs
Increment
PLSCNT
Temporary Sector
Unprotect Mode
Verify Sector
Protect: Write 40h
to sector address
with A6 = 0,
A1 = 1, A0 = 0
Reset
PLSCNT = 1
Wait 15 ms
Read from
sector address
with A6 = 0,
A1 = 1, A0 = 0
Verify Sector
Unprotect: Write
40h to sector
address with
A6 = 1, A1 = 1,
A0 = 0
Increment
PLSCNT
No
No
PLSCNT
= 25?
Yes
Yes
No
Yes
Device failed
Read from
sector address
with A6 = 1,
A1 = 1, A0 = 0
Data = 01h?
PLSCNT
= 1000?
Protect another
sector?
No
Data = 00h?
Yes
Yes
Remove VID
from RESET#
Device failed
Last sector
verified?
Write reset
command
Sector Protect
Algorithm
Sector Protect
complete
Set up
next sector
address
No
No
Yes
Sector Unprotect
Algorithm
Remove VID
from RESET#
Write reset
command
Sector Unprotect
complete
21358H-5
Figure 2.
In-System Sector Protect/Unprotect Algorithms
Am29LV160B
17
COMMON FLASH MEMORY INTERFACE
(CFI)
The Common Flash Interface (CFI) specification outlines device and host system software interrogation
handshake, which allows specific vendor-specified
software algorithms to be used for entire families of
devices. Software support can then be device-independent, JEDEC ID-independent, and forward- and
backward-compatible for the specified flash device
families. Flash vendors can standardize their existing
interfaces for long-term compatibility.
This device enters the CFI Query mode when the system writes the CFI Query command, 98h, to address
55h in word mode (or address AAh in byte mode), any
time the device is ready to read array data. The sysTable 5.
tem can read CFI information at the addresses given
in Tables 5–8. In word mode, the upper address bits
(A7–MSB) must be all zeros. To terminate reading CFI
data, the system must write the reset command.
The system can also write the CFI query command
when the device is in the autoselect mode. The device
enters the CFI query mode, and the system can read
CFI data at the addresses given in Tables 5–8. The
system must write the reset command to return the
device to the autoselect mode.
For further information, please refer to the CFI Specification and CFI Publication 100, available via the World
Wide Web at http://www.amd.com/products/nvd/overv i ew / c f i . h t m l . A l t e r n a t i ve l y, c o n t a c t a n A M D
representative for copies of these documents.
CFI Query Identification String
Addresses
(Word Mode)
Addresses
(Byte Mode)
Data
10h
11h
12h
20h
22h
24h
0051h
0052h
0059h
Query Unique ASCII string “QRY”
13h
14h
26h
28h
0002h
0000h
Primary OEM Command Set
15h
16h
2Ah
2Ch
0040h
0000h
Address for Primary Extended Table
17h
18h
2Eh
30h
0000h
0000h
Alternate OEM Command Set (00h = none exists)
19h
1Ah
32h
34h
0000h
0000h
Address for Alternate OEM Extended Table (00h = none exists)
18
Description
Am29LV160B
Table 6.
System Interface String
Addresses
(Word Mode)
Addresses
(Byte Mode)
Data
1Bh
36h
0027h
VCC Min. (write/erase)
D7–D4: volt, D3–D0: 100 millivolt
1Ch
38h
0036h
VCC Max. (write/erase)
D7–D4: volt, D3–D0: 100 millivolt
1Dh
3Ah
0000h
VPP Min. voltage (00h = no VPP pin present)
1Eh
3Ch
0000h
VPP Max. voltage (00h = no VPP pin present)
1Fh
3Eh
0004h
Typical timeout per single byte/word write 2N µs
20h
40h
0000h
Typical timeout for Min. size buffer write 2N µs (00h = not supported)
21h
42h
000Ah
Typical timeout per individual block erase 2N ms
22h
44h
0000h
Typical timeout for full chip erase 2N ms (00h = not supported)
23h
46h
0005h
Max. timeout for byte/word write 2N times typical
24h
48h
0000h
Max. timeout for buffer write 2N times typical
25h
4Ah
0004h
Max. timeout per individual block erase 2N times typical
26h
4Ch
0000h
Max. timeout for full chip erase 2N times typical (00h = not supported)
Table 7.
Addresses
(Word Mode)
Addresses
(Byte Mode)
Description
Device Geometry Definition
Data
Description
N
27h
4Eh
0015h
Device Size = 2 byte
28h
29h
50h
52h
0002h
0000h
Flash Device Interface description (refer to CFI publication 100)
2Ah
2Bh
54h
56h
0000h
0000h
Max. number of byte in multi-byte write = 2N
(00h = not supported)
2Ch
58h
0004h
Number of Erase Block Regions within device
2Dh
2Eh
2Fh
30h
5Ah
5Ch
5Eh
60h
0000h
0000h
0040h
0000h
Erase Block Region 1 Information
(refer to the CFI specification or CFI publication 100)
31h
32h
33h
34h
62h
64h
66h
68h
0001h
0000h
0020h
0000h
Erase Block Region 2 Information
35h
36h
37h
38h
6Ah
6Ch
6Eh
70h
0000h
0000h
0080h
0000h
Erase Block Region 3 Information
39h
3Ah
3Bh
3Ch
72h
74h
76h
78h
001Eh
0000h
0000h
0001h
Erase Block Region 4 Information
Am29LV160B
19
Table 8.
Primary Vendor-Specific Extended Query
Addresses
(Word Mode)
Addresses
(Byte Mode)
Data
40h
41h
42h
80h
82h
84h
0050h
0052h
0049h
Query-unique ASCII string “PRI”
43h
86h
0031h
Major version number, ASCII
44h
88h
0030h
Minor version number, ASCII
45h
8Ah
0000h
Address Sensitive Unlock
0 = Required, 1 = Not Required
46h
8Ch
0002h
Erase Suspend
0 = Not Supported, 1 = To Read Only, 2 = To Read & Write
47h
8Eh
0001h
Sector Protect
0 = Not Supported, X = Number of sectors in per group
48h
90h
0001h
Sector Temporary Unprotect
00 = Not Supported, 01 = Supported
49h
92h
0004h
Sector Protect/Unprotect scheme
01 = 29F040 mode, 02 = 29F016 mode,
03 = 29F400 mode, 04 = 29LV800A mode
4Ah
94h
0000h
Simultaneous Operation
00 = Not Supported, 01 = Supported
4Bh
96h
0000h
Burst Mode Type
00 = Not Supported, 01 = Supported
4Ch
98h
0000h
Page Mode Type
00 = Not Supported, 01 = 4 Word Page, 02 = 8 Word Page
Description
Hardware Data Protection
The command sequence requirement of unlock cycles
for programming or erasing provides data protection
against inadvertent writes (refer to Table 9 for command definitions). In addition, the following hardware
data protection measures prevent accidental erasure
or programming, which might otherwise be caused by
spurious system level signals during VCC power-up
and power-down transitions, or from system noise.
Low VCC Write Inhibit
When VCC is less than VLKO, the device does not accept any write cycles. This protects data during VCC
power-up and power-down. The command register
and all internal program/erase circuits are disabled,
and the device resets. Subsequent writes are ignored
until VCC is greater than VLKO. The system must provide the proper signals to the control pins to prevent
unintentional writes when VCC is greater than VLKO.
20
Write Pulse “Glitch” Protection
Noise pulses of less than 5 ns (typical) on OE#, CE#
or WE# do not initiate a write cycle.
Logical Inhibit
Write cycles are inhibited by holding any one of OE# =
VIL, CE# = VIH or WE# = VIH. To initiate a write cycle,
CE# and WE# must be a logical zero while OE# is a
logical one.
Power-Up Write Inhibit
If WE# = CE# = VIL and OE# = VIH during power up,
the device does not accept commands on the rising
edge of WE#. The internal state machine is automatically reset to reading array data on power-up.
Am29LV160B
COMMAND DEFINITIONS
Writing specific address and data commands or sequences into the command register initiates device
operations. Table 9 defines the valid register command
sequences. Writing incorrect address and data values or writing them in the improper sequence resets
the device to reading array data.
All addresses are latched on the falling edge of WE#
or CE#, whichever happens later. All data is latched on
the rising edge of WE# or CE#, whichever happens
first. Refer to the appropriate timing diagrams in the
“AC Characteristics” section.
The reset command may be written between the sequence cycles in an autoselect command sequence.
Once in the autoselect mode, the reset command
must be written to return to reading array data (also
applies to autoselect during Erase Suspend).
If DQ5 goes high during a program or erase operation,
writing the reset command returns the device to reading array data (also applies during Erase Suspend).
See “AC Characteristics” for parameters, and to Figure
14 for the timing diagram.
Autoselect Command Sequence
Reading Array Data
The device is automatically set to reading array data
after device power-up. No commands are required to
retrieve data. The device is also ready to read array
data after completing an Embedded Program or Embedded Erase algorithm.
After the device accepts an Erase Suspend command, the device enters the Erase Suspend mode.
The system can read array data using the standard
read timings, except that if it reads at an address
within erase-suspended sectors, the device outputs
status data. After completing a programming operation in the Erase Suspend mode, the system may
once again read array data with the same exception.
See “Erase Suspend/Erase Resume Commands” for
more information on this mode.
The system must issue the reset command to re-enable the device for reading array data if DQ5 goes
high, or while in the autoselect mode. See the “Reset
Command” section, next.
See also “Requirements for Reading Array Data” in
the “Device Bus Operations” section for more information. The Read Operations table provides the read
parameters, and Figure 13 shows the timing diagram.
Reset Command
Writing the reset command to the device resets the
device to reading array data. Address bits are don’t
care for this command.
The reset command may be written between the sequence cycles in an erase command sequence before
erasing begins. This resets the device to reading array
data. Once erasure begins, however, the device ignores reset commands until the operation is complete.
The reset command may be written between the sequence cycles in a program command sequence
before programming begins. This resets the device to
reading array data (also applies to programming in
Erase Suspend mode). Once programming begins,
however, the device ignores reset commands until the
operation is complete.
The autoselect command sequence allows the host
system to access the manufacturer and devices
codes, and determine whether or not a sector is prot e c t e d . Ta bl e 9 s h ow s t h e a d d r e s s a n d d a t a
requirements. This method is an alternative to that
shown in Table 4, which is intended for PROM programmers and requires VID on address bit A9.
The autoselect command sequence is initiated by writing two unlock cycles, followed by the autoselect
command. The device then enters the autoselect
mode, and the system may read at any address any
number of times, without initiating another command
sequence.
A read cycle at address XX00h retrieves the manufacturer code. A read cycle at address XX01h returns the
device code. A read cycle containing a sector address
(SA) and the address 02h in word mode (or 04h in
byte mode) returns 01h if that sector is protected, or
00h if it is unprotected. Refer to Tables 2 and 3 for
valid sector addresses.
The system must write the reset command to exit the
autoselect mode and return to reading array data.
Word/Byte Program Command Sequence
The system may program the device by word or byte,
depending on the state of the BYTE# pin. Programming is a four-bus-cycle operation. The program
command sequence is initiated by writing two unlock
write cycles, followed by the program set-up command. The program address and data are written
next, which in turn initiate the Embedded Program algorithm. The system is not required to provide further
controls or timings. The device automatically generates the program pulses and verifies the programmed
cell margin. Table 9 shows the address and data req u i r e m e n t s fo r t h e by t e p r o gra m c o m m a n d
sequence.
When the Embedded Program algorithm is complete,
the device then returns to reading array data and addresses are no longer latched. The system can
determine the status of the program operation by
Am29LV160B
21
using DQ7, DQ6, or RY/BY#. See “Write Operation
Status” for information on these status bits.
Any commands written to the device during the Embedded Program Algorithm are ignored. Note that a
hardware reset immediately terminates the programm i n g o p e ra t i o n . T h e B y t e P r o gra m c o m m a n d
sequence should be reinitiated once the device has
reset to reading array data, to ensure data integrity.
mand sequence. The first cycle must contain the data
90h; the second cycle the data 00h. Addresses are
don’t care for both cycles. The device then returns to
reading array data.
Figure 3 illustrates the algorithm for the program operation. See the Erase/Program Operations table in “AC
Characteristics” for parameters, and to Figure 17 for
timing diagrams.
Programming is allowed in any sequence and across
sector boundaries. A bit cannot be programmed
from a “0” back to a “1”. Attempting to do so may
halt the operation and set DQ5 to “1,” or cause the
Data# Polling algorithm to indicate the operation was
successful. However, a succeeding read will show that
the data is still “0”. Only erase operations can convert
a “0” to a “1”.
START
Write Program
Command Sequence
Unlock Bypass Command Sequence
The unlock bypass feature allows the system to program bytes or words to the device faster than using the
standard program command sequence. The unlock
bypass command sequence is initiated by first writing
two unlock cycles. This is followed by a third write
cycle containing the unlock bypass command, 20h.
The device then enters the unlock bypass mode. A
two-cycle unlock bypass program command sequence
is all that is required to program in this mode. The first
cycle in this sequence contains the unlock bypass program command, A0h; the second cycle contains the
program address and data. Additional data is programmed in the same manner. This mode dispenses
with the initial two unlock cycles required in the standard program command sequence, resulting in faster
total programming time. Table 9 shows the requirements for the command sequence.
Data Poll
from System
Embedded
Program
algorithm
in progress
Verify Data?
No
Yes
Increment Address
No
Last Address?
Yes
Programming
Completed
During the unlock bypass mode, only the Unlock Bypass Program and Unlock Bypass Reset commands
are valid. To exit the unlock bypass mode, the system
must issue the two-cycle unlock bypass reset com-
21358H-6
Note: See Table 9 for program command sequence.
Figure 3.
Program Operation
the address and data requirements for the chip erase
command sequence.
Chip Erase Command Sequence
Chip erase is a six bus cycle operation. The chip erase
command sequence is initiated by writing two unlock
cycles, followed by a set-up command. Two additional
unlock write cycles are then followed by the chip erase
command, which in turn invokes the Embedded Erase
algorithm. The device does not require the system to
preprogram prior to erase. The Embedded Erase algorithm automatically preprograms and verifies the entire
memory for an all zero data pattern prior to electrical
erase. The system is not required to provide any controls or timings during these operations. Table 9 shows
22
Any commands written to the chip during the Embedded Erase algor ithm are ignored . Note that a
hardware reset during the chip erase operation immediately terminates the operation. The Chip Erase
command sequence should be reinitiated once the device has returned to reading array data, to ensure data
integrity.
The system can determine the status of the erase operation by using DQ7, DQ6, DQ2, or RY/BY#. See
“Write Operation Status” for information on these status bits. When the Embedded Erase algorithm is
Am29LV160B
complete, the device returns to reading array data and
addresses are no longer latched.
Figure 4 illustrates the algorithm for the erase operation. See the Erase/Program Operations tables in “AC
Characteristics” for parameters, and to Figure 18 for
timing diagrams.
Sector Erase Command Sequence
Sector erase is a six bus cycle operation. The sector
erase command sequence is initiated by writing two
unlock cycles, followed by a set-up command. Two additional unlock write cycles are then followed by the
address of the sector to be erased, and the sector
erase command. Table 9 shows the address and data
r e q u i r e m e n t s fo r t h e s e c t o r e r a s e c o m m a n d
sequence.
The device does not require the system to preprogram
the memory prior to erase. The Embedded Erase algorithm automatically programs and verifies the sector
for an all zero data pattern prior to electrical erase.
The system is not required to provide any controls or
timings during these operations.
After the command sequence is written, a sector erase
time-out of 50 µs begins. During the time-out period,
additional sector addresses and sector erase commands may be written. Loading the sector erase buffer
may be done in any sequence, and the number of sectors may be from one sector to all sectors. The time
between these additional cycles must be less than 50
µs, otherwise the last address and command might
not be accepted, and erasure may begin. It is recommended that processor interrupts be disabled during
this time to ensure all commands are accepted. The
interrupts can be re-enabled after the last Sector
Erase command is written. If the time between additional sector erase commands can be assumed to be
less than 50 µs, the system need not monitor DQ3.
Any command other than Sector Erase or Erase
Suspend during the time-out period resets the device to reading array data. The system must rewrite
the command sequence and any additional sector addresses and commands.
The system can monitor DQ3 to determine if the sector erase timer has timed out. (See the “DQ3: Sector
Erase Timer” section.) The time-out begins from the
rising edge of the final WE# pulse in the command
sequence.
Once the sector erase operation has begun, only the
Erase Suspend command is valid. All other commands are ignored. Note that a hardware reset
during the sector erase operation immediately terminates the operation. The Sector Erase command
sequence should be reinitiated once the device has returned to reading array data, to ensure data integrity.
When the Embedded Erase algorithm is complete, the
device returns to reading array data and addresses
are no longer latched. The system can determine the
status of the erase operation by using DQ7, DQ6,
DQ2, or RY/BY#. (Refer to “Write Operation Status” for
information on these status bits.)
Figure 4 illustrates the algorithm for the erase operation. Refer to the Erase/Program Operations tables in
the “AC Characteristics” section for parameters, and to
Figure 18 for timing diagrams.
Erase Suspend/Erase Resume
Commands
The Erase Suspend command allows the system to interrupt a sector erase operation and then read data
from, or program data to, any sector not selected for
erasure. This command is valid only during the sector
erase operation, including the 50 µs time-out period
during the sector erase command sequence. The
Erase Suspend command is ignored if written during
the chip erase operation or Embedded Program algorithm. Writing the Erase Suspend command during the
Sector Erase time-out immediately terminates the
time-out period and suspends the erase operation. Addresses are “don’t-cares” when writing the Erase
Suspend command.
When the Erase Suspend command is written during a
sector erase operation, the device requires a maximum of 20 µs to suspend the erase operation.
However, when the Erase Suspend command is written during the sector erase time-out, the device
immediately terminates the time-out period and suspends the erase operation.
After the erase operation has been suspended, the
system can read array data from or program data to
any sector not selected for erasure. (The device “erase
suspends” all sectors selected for erasure.) Normal
read and write timings and command definitions apply.
Reading at any address within erase-suspended sectors produces status data on DQ7–DQ0. The system
can use DQ7, or DQ6 and DQ2 together, to determine
if a sector is actively erasing or is erase-suspended.
See “Write Operation Status” for information on these
status bits.
After an erase-suspended program operation is complete, the system can once again read array data
within non-suspended sectors. The system can determine the status of the program operation using the
DQ7 or DQ6 status bits, just as in the standard program operation. See “Write Operation Status” for more
information.
The system may also write the autoselect command
sequence when the device is in the Erase Suspend
mode. The device allows reading autoselect codes
even at addresses within erasing sectors, since the
Am29LV160B
23
codes are not stored in the memory array. When the
device exits the autoselect mode, the device reverts to
the Erase Suspend mode, and is ready for another
valid operation. See “Autoselect Command Sequence”
for more information.
START
The system must write the Erase Resume command
(address bits are “don’t care”) to exit the erase suspend mode and continue the sector erase operation.
Further writes of the Resume command are ignored.
Another Erase Suspend command can be written after
the device has resumed erasing.
Write Erase
Command Sequence
Data Poll
from System
No
Embedded
Erase
algorithm
in progress
Data = FFh?
Yes
Erasure Completed
21358H-7
Notes:
1. See Table 9 for erase command sequence.
2. See “DQ3: Sector Erase Timer” for more information.
Figure 4.
24
Erase Operation
Am29LV160B
Cycles
Table 9.
Command
Sequence
(Note 1)
Read (Note 6)
Reset (Note 7)
Autoselect (Note 8)
Manufacturer ID
Device ID,
Top Boot Block
Device ID,
Bottom Boot Block
Sector Protect Verify
(Note 9)
CFI Query (Note 10)
Program
Unlock Bypass
1
1
Word
Byte
Word
Byte
Word
Byte
Sector Erase
4
4
Word
First
Addr Data
RA
RD
XXX
F0
555
AA
AAA
555
AA
AAA
555
AA
AAA
555
4
Byte
Word
Byte
Word
Byte
Word
Byte
Unlock Bypass Program (Note 11)
Unlock Bypass Reset (Note 12)
Chip Erase
4
Word
Byte
Word
Byte
Erase Suspend (Note 13)
Erase Resume (Note 14)
Am29LV160B Command Definitions
4
3
2
2
6
6
1
1
Bus Cycles (Notes 2–5)
Third
Fourth
Addr
Data Addr
Data
2AA
555
2AA
555
2AA
555
555
AAA
555
AAA
555
AAA
AA
55
AA
555
AAA
555
AAA
XXX
XXX
555
AAA
555
AAA
XXX
XXX
55
55
55
2AA
AAA
1
Second
Addr Data
90
90
90
555
55
555
90
AAA
X00
01
X01
X02
X01
X02
(SA)
X04
22C4
C4
2249
49
XX00
XX01
00
01
PA
PD
(SA)
X02
Fifth
Addr Data
Sixth
Addr Data
2AA
555
2AA
555
55
555
AAA
10
55
SA
30
98
AA
AA
2AA
555
2AA
555
55
55
A0
PA
PD
90
XXX
2AA
555
2AA
555
00
AA
AA
55
55
555
AAA
555
AAA
555
AAA
555
AAA
A0
20
80
80
555
AAA
555
AAA
AA
AA
B0
30
Legend:
X = Don’t care
PD = Data to be programmed at location PA. Data latches on the rising
edge of WE# or CE# pulse, whichever happens first.
RA = Address of the memory location to be read.
RD = Data read from location RA during read operation.
PA = Address of the memory location to be programmed. Addresses
latch on the falling edge of the WE# or CE# pulse, whichever happens
later.
SA = Address of the sector to be verified (in autoselect mode) or
erased. Address bits A19–A12 uniquely select any sector.
Notes:
1. See Table 1 for description of bus operations.
3. Except for the read cycle and the fourth cycle of the autoselect
command sequence, all bus cycles are write cycles.
9. The data is 00h for an unprotected sector and 01h for a
protected sector. See “Autoselect Command Sequence” for
more information.
4. Data bits DQ15–DQ8 are don’t cares for unlock and command
cycles.
10. Command is valid when device is ready to read array data or
when device is in autoselect mode.
5. Address bits A19–A11 are don’t cares for unlock and
command cycles, unless SA or PA required.
11. The Unlock Bypass command is required prior to the Unlock
Bypass Program command.
6. No unlock or command cycles required when reading array
data.
12. The Unlock Bypass Reset command is required to return to
reading array data when the device is in the unlock bypass
mode.
2. All values are in hexadecimal.
7. The Reset command is required to return to reading array data
when device is in the autoselect mode, or if DQ5 goes high
(while the device is providing status data).
8. The fourth cycle of the autoselect command sequence is a
read cycle.
13. The system may read and program in non-erasing sectors, or
enter the autoselect mode, when in the Erase Suspend mode.
The Erase Suspend command is valid only during a sector
erase operation.
14. The Erase Resume command is valid only during the Erase Suspend mode.
Am29LV160B
25
WRITE OPERATION STATUS
The device provides several bits to determine the status of a write operation: DQ2, DQ3, DQ5, DQ6, DQ7,
and RY/BY#. Table 10 and the following subsections
describe the functions of these bits. DQ7, RY/BY#,
and DQ6 each offer a method for determining whether
a program or erase operation is complete or in
progress. These three bits are discussed first.
Table 10 shows the outputs for Data# Polling on DQ7.
Figure 5 shows the Data# Polling algorithm.
START
DQ7: Data# Polling
The Data# Polling bit, DQ7, indicates to the host system whether an Embedded Algorithm is in progress or
completed, or whether the device is in Erase Suspend.
Data# Polling is valid after the rising edge of the final
WE# pulse in the program or erase command
sequence.
During the Embedded Program algorithm, the device
outputs on DQ7 the complement of the datum programmed to DQ7. This DQ7 status also applies to
programming during Erase Suspend. When the Embedded Program algorithm is complete, the device
outputs the datum programmed to DQ7. The system
must provide the program address to read valid status
information on DQ7. If a program address falls within a
protected sector, Data# Polling on DQ7 is active for
approximately 1 µs, then the device returns to reading
array data.
Read DQ7–DQ0
Addr = VA
DQ7 = Data?
No
No
DQ5 = 1?
Yes
During the Embedded Erase algorithm, Data# Polling
produces a “0” on DQ7. When the Embedded Erase
algorithm is complete, or if the device enters the Erase
Suspend mode, Data# Polling produces a “1” on DQ7.
This is analogous to the complement/true datum output described for the Embedded Program algorithm:
the erase function changes all the bits in a sector to
“1”; prior to this, the device outputs the “complement,”
or “0.” The system must provide an address within any
of the sectors selected for erasure to read valid status
information on DQ7.
Read DQ7–DQ0
Addr = VA
After an erase command sequence is written, if all
sectors selected for erasing are protected, Data# Polling on DQ7 is active for approximately 100 µs, then the
device returns to reading array data. If not all selected
sectors are protected, the Embedded Erase algorithm
erases the unprotected sectors, and ignores the selected sectors that are protected.
FAIL
When the system detects DQ7 has changed from the
complement to true data, it can read valid data at
DQ7–DQ0 on the following read cycles. This is because DQ7 may change asynchronously with DQ0–
DQ6 while Output Enable (OE#) is asserted low. Figure 19, Data# Polling Timings (During Embedded
Algorithms), in the “AC Characteristics” section illustrates this.
26
Yes
DQ7 = Data?
Yes
No
PASS
Notes:
1. VA = Valid address for programming. During a sector
erase operation, a valid address is an address within
any sector selected for erasure. During chip erase, a
valid address is any non-protected sector address.
2. DQ7 should be rechecked even if DQ5 = “1” because
DQ7 may change simultaneously with DQ5.
Am29LV160B
21358H-8
Figure 5.
Data# Polling Algorithm
RY/BY#: Ready/Busy#
The RY/BY# is a dedicated, open-drain output pin that
indicates whether an Embedded Algorithm is in
progress or complete. The RY/BY# status is valid after
the rising edge of the final WE# pulse in the command
sequence. Since RY/BY# is an open-drain output, several RY/BY# pins can be tied together in parallel with a
pull-up resistor to VCC. (The RY/BY# pin is not available on the 44-pin SO package.)
If the output is low (Busy), the device is actively erasing or programming. (This includes programming in
the Erase Suspend mode.) If the output is high
(Ready), the device is ready to read array data (including during the Erase Suspend mode), or is in the
standby mode.
Table 10 shows the outputs for RY/BY#. Figures 13,
14, 17 and 18 shows RY/BY# for read, reset, program,
and erase operations, respectively.
DQ6: Toggle Bit I
Toggle Bit I on DQ6 indicates whether an Embedded
Program or Erase algorithm is in progress or complete, or whether the device has entered the Erase
Suspend mode. Toggle Bit I may be read at any address, and is valid after the rising edge of the final
WE# pulse in the command sequence (prior to the
program or erase operation), and during the sector
erase time-out.
During an Embedded Program or Erase algorithm operation, successive read cycles to any address cause
DQ6 to toggle. (The system may use either OE# or
CE# to control the read cycles.) When the operation is
complete, DQ6 stops toggling.
After an erase command sequence is written, if all
sectors selected for erasing are protected, DQ6 toggles for approximately 100 µs, then returns to reading
array data. If not all selected sectors are protected, the
Embedded Erase algorithm erases the unprotected
sectors, and ignores the selected sectors that are
protected.
The system can use DQ6 and DQ2 together to determine whether a sector is actively erasing or is erasesuspended. When the device is actively erasing (that
is, the Embedded Erase algorithm is in progress), DQ6
toggles. When the device enters the Erase Suspend
mode, DQ6 stops toggling. However, the system must
also use DQ2 to determine which sectors are erasing
or erase-suspended. Alternatively, the system can use
DQ7 (see the subsection on “DQ7: Data# Polling”).
If a program address falls within a protected sector,
DQ6 toggles for approximately 1 µs after the program
command sequence is written, then returns to reading
array data.
DQ6 also toggles during the erase-suspend-program
mode, and stops toggling once the Embedded Program algorithm is complete.
Table 10 shows the outputs for Toggle Bit I on DQ6.
Figure 6 shows the toggle bit algorithm in flowchart
form, and the section “Reading Toggle Bits DQ6/DQ2”
explains the algorithm. Figure 20 in the “AC Characteristics” section shows the toggle bit timing diagrams.
Figure 21 shows the differences between DQ2 and
DQ6 in graphical form. See also the subsection on
“DQ2: Toggle Bit II”.
DQ2: Toggle Bit II
The “Toggle Bit II” on DQ2, when used with DQ6, indicates whether a particular sector is actively erasing
(that is, the Embedded Erase algorithm is in progress),
or whether that sector is erase-suspended. Toggle Bit
II is valid after the rising edge of the final WE# pulse in
the command sequence.
DQ2 toggles when the system reads at addresses
within those sectors that have been selected for erasure. (The system may use either OE# or CE# to
control the read cycles.) But DQ2 cannot distinguish
whether the sector is actively erasing or is erase-suspended. DQ6, by comparison, indicates whether the
device is actively erasing, or is in Erase Suspend, but
cannot distinguish which sectors are selected for erasure. Thus, both status bits are required for sector and
mode information. Refer to Table 10 to compare outputs for DQ2 and DQ6.
Figure 6 shows the toggle bit algorithm in flowchart
form, and the section “Reading Toggle Bits DQ6/DQ2”
explains the algorithm. See also the DQ6: Toggle Bit I
subsection. Figure 20 shows the toggle bit timing diagram. Figure 21 shows the differences between DQ2
and DQ6 in graphical form.
Reading Toggle Bits DQ6/DQ2
Refer to Figure 6 for the following discussion. Whenever the system initially begins reading toggle bit
status, it must read DQ7–DQ0 at least twice in a row
to determine whether a toggle bit is toggling. Typically, the system would note and store the value of
the toggle bit after the first read. After the second
read, the system would compare the new value of the
toggle bit with the first. If the toggle bit is not toggling,
the device has completed the program or erase operation. The system can read array data on DQ7–DQ0
on the following read cycle.
However, if after the initial two read cycles, the system
determines that the toggle bit is still toggling, the system also should note whether the value of DQ5 is high
(see the section on DQ5). If it is, the system should
then determine again whether the toggle bit is toggling, since the toggle bit may have stopped toggling
just as DQ5 went high. If the toggle bit is no longer
Am29LV160B
27
toggling, the device has successfully completed the
program or erase operation. If it is still toggling, the device did not complete the operation successfully, and
the system must write the reset command to return to
reading array data.
START
The remaining scenario is that the system initially determines that the toggle bit is toggling and DQ5 has
not gone high. The system may continue to monitor
the toggle bit and DQ5 through successive read cycles, determining the status as described in the
previous paragraph. Alternatively, it may choose to
perform other system tasks. In this case, the system
must start at the beginning of the algorithm when it returns to determine the status of the operation (top of
Figure 6).
Read DQ7–DQ0
Read DQ7–DQ0
(Note 1)
Toggle Bit
= Toggle?
No
Yes
No
DQ5 = 1?
Yes
Read DQ7–DQ0
Twice
Toggle Bit
= Toggle?
(Notes
1, 2)
No
Yes
Program/Erase
Operation Not
Complete, Write
Reset Command
Program/Erase
Operation Complete
Notes:
1. Read toggle bit twice to determine whether or not it is
toggling. See text.
2. Recheck toggle bit because it may stop toggling as DQ5
changes to “1”. See text.
21358H-9
Figure 6.
28
Am29LV160B
Toggle Bit Algorithm
DQ5: Exceeded Timing Limits
DQ5 indicates whether the program or erase time has
exceeded a specified internal pulse count limit. Under
these conditions DQ5 produces a “1.” This is a failure
condition that indicates the program or erase cycle
was not successfully completed.
The DQ5 failure condition may appear if the system
tries to program a “1” to a location that is previously
programmed to “0.” Only an erase operation can
change a “0” back to a “1.” Under this condition, the
device halts the operation, and when the operation
has exceeded the timing limits, DQ5 produces a “1.”
Under both these conditions, the system must issue
the reset command to return the device to reading
array data.
DQ3: Sector Erase Timer
After writing a sector erase command sequence, the
system may read DQ3 to determine whether or not an
erase operation has begun. (The sector erase timer
does not apply to the chip erase command.) If addiTable 10.
Erase
Suspend
Mode
After the sector erase command sequence is written,
the system should read the status on DQ7 (Data# Polling) or DQ6 (Toggle Bit I) to ensure the device has
accepted the command sequence, and then read
DQ3. If DQ3 is “1”, the internally controlled erase cycle
has begun; all further commands (other than Erase
Suspend) are ignored until the erase operation is complete. If DQ3 is “0”, the device will accept additional
sector erase commands. To ensure the command has
been accepted, the system software should check the
status of DQ3 prior to and following each subsequent
sector erase command. If DQ3 is high on the second
status check, the last command might not have been
accepted. Table 10 shows the outputs for DQ3.
Write Operation Status
DQ7
(Note 2)
DQ6
DQ5
(Note 1)
DQ3
DQ2
(Note 2)
RY/BY#
DQ7#
Toggle
0
N/A
No toggle
0
Embedded Erase Algorithm
0
Toggle
0
1
Toggle
0
Reading within Erase
Suspended Sector
1
No toggle
0
N/A
Toggle
1
Reading within Non-Erase
Suspended Sector
Data
Data
Data
Data
Data
1
Erase-Suspend-Program
DQ7#
Toggle
0
N/A
N/A
0
Operation
Standard
Mode
tional sectors are selected for erasure, the entire timeout also applies after each additional sector erase command. When the time-out is complete, DQ3 switches
from “0” to “1.” The system may ignore DQ3 if the system can guarantee that the time between additional
sector erase commands will always be less than 50
μs. See also the “Sector Erase Command Sequence”
section.
Embedded Program Algorithm
Notes:
1. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation has exceeded the maximum timing limits.
See “DQ5: Exceeded Timing Limits” for more information.
2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further
details.
Am29LV160B
29
ABSOLUTE MAXIMUM RATINGS
Voltage with Respect to Ground
Storage Temperature
Plastic Packages . . . . . . . . . . . . . . . –65°C to +150°C
Ambient Temperature
with Power Applied. . . . . . . . . . . . . . –65°C to +125°C
VCC (Note 1) . . . . . . . . . . . . . . . . . –0.5 V to +4.0 V
A9, OE#, and RESET# (Note 2) . –0.5 V to +12.5 V
All other pins (Note 1) . . . . . . . –0.5 V to VCC+0.5 V
Output Short Circuit Current (Note 3) . . . . . . . 200 mA
Notes:
1. Minimum DC voltage on input or I/O pins is –0.5 V. During voltage transitions, input or I/O pins may overshoot VSS to –2.0 V
for periods of up to 20 ns. See Figure 7 . Maximum DC voltage on input or I/O pins is VCC +0.5 V. During voltage transitions,
input or I/O pins may overshoot to VCC +2.0 V for periods up to 20 ns. See Figure 8 .
3. No more than one output may be shorted to ground at a
2. Minimum DC input voltage on pins A9, OE#, and RESET#
time. Duration of the short circuit should not be greater than
is -0.5 V. During voltage transitions, A9, OE#, and RESET#
one second.
may overshoot VSS to –2.0 V for periods of up to 20 ns. See
Figure 7 . Maximum DC input voltage on pin A9 is +12.5 V
which may overshoot to 14.0 V for periods up to 20 ns.
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any other conditions above those indicated in the operational sections
of this data sheet is not implied. Exposure of the device to absolute maximum rating conditions for extended periods may affect
device reliability.
OPERATING RANGES
Commercial (C) Devices
Ambient Temperature (TA) . . . . . . . . . . . 0°C to +70°C
Industrial (I) Devices
Ambient Temperature (TA) . . . . . . . . . –40°C to +85°C
Extended (E) Devices
Ambient Temperature (TA) . . . . . . . . –55°C to +125°C
VCC Supply Voltages
VCC for regulated voltage range. . . . . . . 3.0 V to 3.6 V
VCC for full voltage range . . . . . . . . . . . . 2.7 V to 3.6 V
Operating ranges define those limits between which the functionality of the device is guaranteed
20 ns
20 ns
20 ns
+0.8 V
VCC
+2.0 V
VCC
+0.5 V
–0.5 V
–2.0 V
2.0 V
20 ns
20 ns
21358H-11
21358H-10
Figure 7.
30
Maximum Negative Overshoot
Waveform
Figure 8.
Am29LV160B
20 ns
Maximum Positive Overshoot
Waveform
DC CHARACTERISTICS
CMOS Compatible
Parameter
Description
Test Conditions
ILI
Input Load Current
VIN = VSS to VCC,
VCC = VCC max
ILIT
A9 Input Load Current
VCC = VCC max; A9 = 12.5 V
ILO
Output Leakage Current
VOUT = VSS to VCC,
VCC = VCC max
ICC1
VCC Active Read Current
(Notes 1, 2)
Min
Typ
Max
Unit
±1.0
µA
35
µA
±1.0
µA
CE# = VIL, OE# = VIH,
Byte Mode
5 MHz
9
16
1 MHz
2
4
CE# = VIL, OE# = VIH,
Word Mode
5 MHz
9
16
1 MHz
2
4
mA
ICC2
VCC Active Write Current
(Notes 2, 3, 4)
CE# = VIL, OE# = VIH
20
30
mA
ICC3
VCC Standby Current (Note 2)
CE#, RESET# = VCC±0.3 V
0.2
5
µA
ICC4
VCC Standby Current During Reset
RESET# = VSS ± 0.3 V
(Note 2)
0.2
5
µA
ICC5
Automatic Sleep Mode (Notes 2, 5)
0.2
5
µA
VIL
Input Low Voltage
–0.5
0.8
V
VIH
Input High Voltage
0.7 x VCC
VCC + 0.3
V
VID
Voltage for Autoselect and
Temporary Sector Unprotect
VCC = 3.3 V
11.5
12.5
V
VOL
Output Low Voltage
IOL = 4.0 mA, VCC = VCC min
0.45
V
VOH1
Output High Voltage
VOH2
VLKO
VIH = VCC ± 0.3 V;
VIL = VSS ± 0.3 V
IOH = -2.0 mA, VCC = VCC min
0.85 x VCC
IOH = -100 µA, VCC = VCC min
VCC–0.4
Low VCC Lock-Out Voltage (Note 4)
2.3
V
2.5
V
Notes:
1. The ICC current listed is typically less than 2 mA/MHz, with OE# at VIH. Typical VCC is 3.0 V.
2. Maximum ICC specifications are tested with VCC = VCCmax.
3. ICC active while Embedded Erase or Embedded Program is in progress.
4. Automatic sleep mode enables the low power mode when addresses remain stable for tACC + 30 ns. Typical sleep mode current is
200 nA.
5. Not 100% tested.
Am29LV160B
31
DC CHARACTERISTICS (Continued)
Zero Power Flash
Supply Current in mA
25
20
15
10
5
0
0
500
1000
1500
2000
2500
3000
3500
4000
Time in ns
Note: Addresses are switching at 1 MHz
21358H-12
Figure 9.
ICC1 Current vs. Time (Showing Active and Automatic Sleep Currents)
10
3.6 V
Supply Current in mA
8
2.7 V
6
4
2
0
1
2
3
4
5
Frequency in MHz
Note: T = 25 °C
21358H-13
Figure 10.
32
Typical ICC1 vs. Frequency
Am29LV160B
TEST CONDITIONS
Table 11.
Test Specifications
3.3 V
-70R,
-80
Test Condition
2.7 kΩ
Device
Under
Test
CL
Output Load
-90,
-120
Unit
1 TTL gate
Output Load Capacitance, CL
(including jig capacitance)
30
100
pF
6.2 kΩ
Input Rise and Fall Times
5
ns
0.0–3.0
V
Input timing measurement
reference levels
1.5
V
Output timing measurement
reference levels
1.5
V
Input Pulse Levels
Note: Diodes are IN3064 or equivalent
21358H-14
Figure 11.
Test Setup
KEY TO SWITCHING WAVEFORMS
WAVEFORM
INPUTS
OUTPUTS
Steady
Changing from H to L
Changing from L to H
Don’t Care, Any Change Permitted
Changing, State Unknown
Does Not Apply
Center Line is High Impedance State (High Z)
KS000010-PAL
3.0 V
Input
1.5 V
Measurement Level
1.5 V
Output
0.0 V
21358H-15
Figure 12.
Input Waveforms and Measurement Levels
Am29LV160B
33
AC CHARACTERISTICS
Read Operations
Parameter
Speed Options
JEDEC
Std
Description
tAVAV
tRC
Read Cycle Time (Note 1)
tAVQV
tACC
Address to Output Delay
tELQV
tCE
Chip Enable to Output Delay
tGLQV
tOE
tEHQZ
tGHQZ
tAXQX
Test Setup
-70R
-80
-90
-120
Unit
Min
70
80
90
120
ns
CE# = VIL
OE# = VIL
Max
70
80
90
120
ns
OE# = VIL
Max
70
80
90
120
ns
Output Enable to Output Delay
Max
30
30
35
50
ns
tDF
Chip Enable to Output High Z (Note 1)
Max
25
25
30
30
ns
tDF
Output Enable to Output High Z (Note 1)
Max
25
25
30
30
ns
Min
0
ns
tOEH
Read
Output Enable
Hold Time (Note 1) Toggle and
Data# Polling
Min
10
ns
tOH
Output Hold Time From Addresses, CE#
or OE#, Whichever Occurs First (Note 1)
Min
0
ns
Notes:
1. Not 100% tested.
2. See Figure 11 and Table 11 for test specifications.
tRC
Addresses Stable
Addresses
tACC
CE#
tDF
tOE
OE#
tOEH
WE#
tCE
tOH
HIGH Z
HIGH Z
Output Valid
Outputs
RESET#
RY/BY#
0V
21358H-16
Figure 13.
34
Read Operations Timings
Am29LV160B
AC CHARACTERISTICS
Hardware Reset (RESET#)
Parameter
JEDEC
Std
Description
Test Setup
All Speed Options
Unit
tREADY
RESET# Pin Low (During Embedded Algorithms)
to Read or Write (See Note)
Max
20
µs
tREADY
RESET# Pin Low (NOT During Embedded
Algorithms) to Read or Write (See Note)
Max
500
ns
tRP
RESET# Pulse Width
Min
500
ns
tRH
RESET# High Time Before Read (See Note)
Min
50
ns
tRPD
RESET# Low to Standby Mode
Min
20
µs
tRB
RY/BY# Recovery Time
Min
0
ns
Note: Not 100% tested.
RY/BY#
CE#, OE#
tRH
RESET#
tRP
tReady
Reset Timings NOT during Embedded Algorithms
Reset Timings during Embedded Algorithms
tReady
RY/BY#
tRB
CE#, OE#
RESET#
tRP
21358H-17
Figure 14.
RESET# Timings
Am29LV160B
35
AC CHARACTERISTICS
Word/Byte Configuration (BYTE#)
Parameter
JEDEC
Std
Speed Options
Description
-70R
-80
-90
-120
Unit
tELFL/tELFH
CE# to BYTE# Switching Low or High
Max
tFLQZ
BYTE# Switching Low to Output HIGH Z
Max
25
25
30
30
ns
tFHQV
BYTE# Switching High to Output Active
Min
70
80
90
120
ns
5
ns
CE#
OE#
BYTE#
BYTE#
Switching
from word
to byte
mode
tELFL
Data Output
(DQ0–DQ7)
Data Output
(DQ0–DQ14)
DQ0–DQ14
Address
Input
DQ15
Output
DQ15/A-1
tFLQZ
tELFH
BYTE#
BYTE#
Switching
from byte
to word
mode
Data Output
(DQ0–DQ7)
DQ0–DQ14
Address
Input
DQ15/A-1
Data Output
(DQ0–DQ14)
DQ15
Output
tFHQV
21358H-18
Figure 15.
BYTE# Timings for Read Operations
CE#
The falling edge of the last WE# signal
WE#
BYTE#
tSET
(tAS)
tHOLD (tAH)
Note: Refer to the Erase/Program Operations table for tAS and tAH specifications.
21358H-19
Figure 16.
36
BYTE# Timings for Write Operations
Am29LV160B
AC CHARACTERISTICS
Erase/Program Operations
Parameter
Speed Options
JEDEC
Std
Description
-70R
-80
-90
-120
Unit
tAVAV
tWC
Write Cycle Time (Note 1)
Min
70
80
90
120
ns
tAVWL
tAS
Address Setup Time
Min
tWLAX
tAH
Address Hold Time
Min
45
45
45
50
ns
tDVWH
tDS
Data Setup Time
Min
35
35
45
50
ns
tWHDX
tDH
Data Hold Time
Min
0
ns
tOES
Output Enable Setup Time
Min
0
ns
Read Recovery Time Before Write
(OE# High to WE# Low)
Min
0
ns
0
ns
tGHWL
tGHWL
tELWL
tCS
CE# Setup Time
Min
0
ns
tWHEH
tCH
CE# Hold Time
Min
0
ns
tWLWH
tWP
Write Pulse Width
Min
tWHWL
tWPH
Write Pulse Width High
Min
30
Byte
Typ
9
tWHWH1
tWHWH1
Programming Operation (Note 2)
Word
Typ
11
tWHWH2
tWHWH2
Sector Erase Operation (Note 2)
Typ
0.7
sec
tVCS
VCC Setup Time (Note 1)
Min
50
µs
tRB
Recovery Time from RY/BY#
Min
0
ns
Program/Erase Valid to RY/BY# Delay
Min
90
ns
tBUSY
35
35
35
50
ns
ns
µs
Notes:
1. Not 100% tested.
2. See the “Erase and Programming Performance” section for more information.
Am29LV160B
37
AC CHARACTERISTICS
Program Command Sequence (last two cycles)
tAS
tWC
Addresses
555h
Read Status Data (last two cycles)
PA
PA
PA
tAH
CE#
tCH
OE#
tWHWH1
tWP
WE#
tWPH
tCS
tDS
tDH
A0h
Data
PD
Status
tBUSY
DOUT
tRB
RY/BY#
tVCS
VCC
21358H-20
Notes:
1. PA = program address, PD = program data, DOUT is the true data at the program address.
2. Illustration shows device in word mode.
Figure 17.
38
Program Operation Timings
Am29LV160B
AC CHARACTERISTICS
Erase Command Sequence (last two cycles)
tAS
tWC
2AAh
Addresses
Read Status Data
VA
SA
VA
555h for chip erase
tAH
CE#
tGHWL
tCH
OE#
tWP
WE#
tWPH
tCS
tWHWH2
tDS
tDH
Data
55h
In
Progress
30h
Complete
10 for Chip Erase
tBUSY
tRB
RY/BY#
tVCS
VCC
21358H-21
Notes:
1. SA = sector address (for Sector Erase), VA = Valid Address for reading status data (see “Write Operation Status”).
2. Illustration shows device in word mode.
Figure 18.
Chip/Sector Erase Operation Timings
Am29LV160B
39
AC CHARACTERISTICS
tRC
Addresses
VA
VA
VA
tACC
tCE
CE#
tCH
tOE
OE#
tOEH
tDF
WE#
tOH
High Z
DQ7
Complement
Complement
DQ0–DQ6
Status Data
Status Data
Valid Data
True
High Z
Valid Data
True
tBUSY
RY/BY#
Note: VA = Valid address. Illustration shows first status cycle after command sequence, last status read cycle, and array data
read cycle.
21358H-22
Figure 19.
Data# Polling Timings (During Embedded Algorithms)
tRC
Addresses
VA
VA
VA
VA
tACC
tCE
CE#
tCH
tOE
OE#
tOEH
tDF
WE#
tOH
High Z
DQ6/DQ2
tBUSY
Valid Status
Valid Status
(first read)
(second read)
Valid Status
Valid Data
(stops toggling)
RY/BY#
Note: VA = Valid address; not required for DQ6. Illustration shows first two status cycle after command sequence, last status read
cycle, and array data read cycle.
21358H-23
Figure 20.
40
Toggle Bit Timings (During Embedded Algorithms)
Am29LV160B
AC CHARACTERISTICS
Enter
Embedded
Erasing
Erase
Suspend
Erase
WE#
Enter Erase
Suspend Program
Erase Suspend
Read
Erase
Suspend
Program
Erase
Resume
Erase Suspend
Read
Erase
Erase
Complete
DQ6
DQ2
Note: The system may use CE# or OE# to toggle DQ2 and DQ6. DQ2 toggles only when read at an address within an
erase-suspended sector.
21358H-24
Figure 21.
DQ2 vs. DQ6 for Erase and Erase Suspend Operations
Temporary Sector Unprotect
Parameter
JEDEC
Std
Description
tVIDR
VID Rise and Fall Time (See Note)
tRSP
RESET# Setup Time for Temporary Sector
Unprotect
All Speed Options
Unit
Min
500
ns
Min
4
µs
Note: Not 100% tested.
Am29LV160B
41
AC CHARACTERISTICS
VID
VIH
RESET#
SA, A6,
A1, A0
Valid*
Valid*
Sector Protect/Unprotect
Data
60h
Valid*
Verify
60h
40h
Status
Sector Protect: 150 µs
Sector Unprotect: 15 ms
1 µs
CE#
WE#
OE#
Note: For sector protect, A6 = 0, A1 = 1, A0 = 0. For sector unprotect, A6 = 1, A1 = 1, A0 = 0.
21358H-25
Figure 22.
42
Sector Protect/Unprotect Timing Diagram
Am29LV160B
AC CHARACTERISTICS
Alternate CE# Controlled Erase/Program Operations
Parameter
Speed Options
JEDEC
Std
Description
-70R
-80
-90
-120
Unit
tAVAV
tWC
Write Cycle Time (Note 1)
Min
70
80
90
120
ns
tAVEL
tAS
Address Setup Time
Min
tELAX
tAH
Address Hold Time
Min
45
45
45
50
ns
tDVEH
tDS
Data Setup Time
Min
35
35
45
50
ns
tEHDX
tDH
Data Hold Time
Min
0
ns
tOES
Output Enable Setup Time
Min
0
ns
tGHEL
tGHEL
Read Recovery Time Before Write
(OE# High to WE# Low)
Min
0
ns
tWLEL
tWS
WE# Setup Time
Min
0
ns
tEHWH
tWH
WE# Hold Time
Min
0
ns
tELEH
tCP
CE# Pulse Width
Min
tEHEL
tCPH
CE# Pulse Width High
Min
30
Byte
Typ
9
tWHWH1
tWHWH1
Programming Operation (Note 2)
Word
Typ
11
tWHWH2
tWHWH2
Sector Erase Operation (Note 2)
Typ
0.7
0
35
35
ns
35
50
ns
ns
µs
sec
Notes:
1. Not 100% tested.
2. See the “Erase and Programming Performance” section for more information.
Am29LV160B
43
AC CHARACTERISTICS
555 for program
2AA for erase
PA for program
SA for sector erase
555 for chip erase
Data# Polling
Addresses
PA
tWC
tAS
tAH
tWH
WE#
tGHEL
OE#
tCP
CE#
tWS
tWHWH1 or 2
tCPH
tBUSY
tDS
tDH
DQ7#
Data
tRH
A0 for program
55 for erase
DOUT
PD for program
30 for sector erase
10 for chip erase
RESET#
RY/BY#
Notes:
1. PA = program address, PD = program data, DQ7# = complement of the data written to the device, DOUT = data written to the
device.
2. Figure indicates the last two bus cycles of the command sequence.
3. Word mode address used as an example.
21358H-26
Figure 23.
44
Alternate CE# Controlled Write Operation Timings
Am29LV160B
ERASE AND PROGRAMMING PERFORMANCE
Parameter
Typ (Note 1)
Max (Note 2)
Unit
Sector Erase Time
0.7
15
s
Chip Erase Time
25
Byte Programming Time
9
300
µs
Word Programming Time
11
360
µs
s
Chip Programming Time
Byte Mode
18
54
s
(Note 3)
Word Mode
12
36
s
Comments
Excludes 00h programming
prior to erasure (Note 4)
Excludes system level
overhead (Note 5)
Notes:
1. Typical program and erase times assume the following conditions: 25°C, 3.0 V VCC, 1,000,000 cycles. Additionally,
programming typicals assume checkerboard pattern.
2. Under worst case conditions of 90°C, VCC = 2.7 V (3.0 V for 70R), 1,000,000 cycles.
3. The typical chip programming time is considerably less than the maximum chip programming time listed, since most bytes
program faster than the maximum program times listed.
4. In the pre-programming step of the Embedded Erase algorithm, all bytes are programmed to 00h before erasure.
5. System-level overhead is the time required to execute the two- or four-bus-cycle sequence for the program command. See Table 9
for further information on command definitions.
6. The device has a minimum erase and program cycle endurance of 1,000,000 cycles.
LATCHUP CHARACTERISTICS
Description
Min
Max
Input voltage with respect to VSS on all pins except I/O pins
(including A9, OE#, and RESET#)
–1.0 V
12.5 V
Input voltage with respect to VSS on all I/O pins
–1.0 V
VCC + 1.0 V
–100 mA
+100 mA
VCC Current
Includes all pins except VCC. Test conditions: VCC = 3.0 V, one pin at a time.
TSOP AND SO PIN CAPACITANCE
Parameter
Symbol
Parameter Description
Test Setup
Typ
Max
Unit
CIN
Input Capacitance
VIN = 0
6
7.5
pF
COUT
Output Capacitance
VOUT = 0
8.5
12
pF
CIN2
Control Pin Capacitance
VIN = 0
7.5
9
pF
Notes:
1. Sampled, not 100% tested.
2. Test conditions TA = 25°C, f = 1.0 MHz.
DATA RETENTION
Parameter
Test Conditions
Min
Unit
150°C
10
Years
125°C
20
Years
Minimum Pattern Data Retention Time
Am29LV160B
45
PHYSICAL DIMENSIONS*
TS 048—48-Pin Standard TSOP (measured in millimeters)
Dwg rev AA; 10/99
46
Am29LV160B
* For reference only. BSC is an ANSI standard for Basic Space Centering.
Am29LV160B
47
PHYSICAL DIMENSIONS
TSR048—48-Pin Reverse TSOP (measured in millimeters)
Dwg rev AA; 10/99
* For reference only. BSC is an ANSI standard for Basic Space Centering.
48
Am29LV160B
PHYSICAL DIMENSIONS
FBC048—48-Ball Fine-Pitch Ball Grid Array (FBGA) 8 x 9 mm (measured in millimeters)
Dwg rev AF; 10/99
Am29LV160B
49
PHYSICAL DIMENSIONS
SO 044—44-Pin Small Outline Package (measured in millimeters)
Dwg rev AC; 10/99
50
Am29LV160B
REVISION SUMMARY
Revision F (January 1998)
Added note reference for tVIDR. This parameter is not
100% tested.
Distinctive Characteristics
Changed typical read and program/erase current
specifications.
Device now has a guaranteed minimum endurance of
1,000,000 write cycles.
Figure 2, In-System Sector Protect/Unprotect
Algorithms
Corrected A6 to 0, Changed wait specification to 150
Figure 22, Sector Protect/Unprotect Timing
Diagram
A valid address is not required for the first write cycle;
only the data 60h.
Erase and Programming Performance
In Note 2, the worst case endurance is now 1 million
cycles.
µs on sector protect and 15 ms on sector unprotect.
Revision G (January 1999)
DC Characteristics
Global
Changed typical read and program/erase current
specifications.
Added 70R speed option, changed 80R speed option
to 80.
AC Characteristics
Distinctive Characteristics
Alternate CE# Controlled Erase/Program Operations:
Changed t CP to 35 ns for 70R, 80, and 90 speed
options.2w
Changed process technology to 0.32 µm.
Erase and Programming Performance
Moved VCC max test condition for ICC specifications
to notes.
Device now has a guaranteed minimum endurance of
1,000,000 write cycles.
Physical Dimensions
Corrected dimensions for package length and width in
FBGA illustration (standalone data sheet version).
DC Characteristics
Connection Diagrams
Corrected the reverse TSOP drawing to show orientation and pin 1 indicators.
Distinctive Characteristics
Added 20-year data retention bullet.
Revision F+1
Connection Diagrams
Table 9, Command Definitions
Corrected the byte-mode address in the sixth write
cycle of the chip erase command sequence to AAAh.
Updated FBGA figure.
Ordering Information
Revision F+2
Changed FBGA package reference to FBC048; addded FBGA package marking information.
Figure 2, In-System Sector Protect/Unprotect
Algorithms
Physical Dimensions
In the sector protect algorithm, added a “Reset
PLSCNT=1” box in the path from “Protect another sector?” back to setting up the next sector address.
DC Characteristics
Changed ICC1 test conditions and Note 1 to indicate
that OE# is at VIH for the listed current.
AC Characteristics
Erase/Program Operations; Alternate CE# Controlled
Erase/Program Operations: Corrected the notes reference for tWHWH1 and tWHWH2. These parameters are
100% tested. Corrected the note reference for tVCS.
This parameter is not 100% tested.
Temporary Sector Unprotect Table
Changed drawing to FBC048.
Revision G+1 (February 1999)
Connection Diagrams
FBGA: Corrected to indicate that diagram shows the
top view, balls facing down.
Command Definitions Table
Corrected the address in the sixth cycle of the chip
erase sequence to AAAh.
Revision H (November 23, 1999)
AC Characteristics—Figure 17. Program Operations Timing and Figure 18. Chip/Sector Erase
Operations
Am29LV160B
51
Deleted tGHWL and changed OE# waveform to start at
high.
Physical Dimensions
Revision H+2 (June 11, 2004)
Ordering Information
Added Pb-free package OPNs.
Replaced figures with more detailed illustrations.
Revision H+3 (October 7, 2004)
Revision H+1 (February 22, 2000)
Global
Cover Sheet and Title Page
Added notation to superseding documents.
Added dash to speed options.
Ordering Information
Added dash to OPNs.
Revision H+4 (June 6, 2005)
Cover page and Title page
Updated EOL disclaimers.
Added notation to superseding documents.
Colophon
The products described in this document are designed, developed and manufactured as contemplated for general use, including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and manufactured as contemplated (1) for any use that includes fatal risks or dangers that, unless extremely high safety is secured, could have a serious effect to the
public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility,
aircraft flight control, air traffic control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for
any use where chance of failure is intolerable (i.e., submersible repeater and artificial satellite). Please note that Spansion will not be liable to
you and/or any third party for any claims or damages arising in connection with above-mentioned uses of the products. Any semiconductor devices have an inherent chance of failure. You must protect against injury, damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and prevention of over-current levels and other abnormal operating
conditions. If any products described in this document represent goods or technologies subject to certain restrictions on export under the Foreign
Exchange and Foreign Trade Law of Japan, the US Export Administration Regulations or the applicable laws of any other country, the prior authorization by the respective government entity will be required for export of those products.
Trademarks
Copyright © 2005 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD logo, and combinations thereof are registered trademarks of
Advanced Micro Devices, Inc. ExpressFlash is a trademark 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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Am29LV160B