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PDF 29LV040B Data sheet ( Hoja de datos )
| Número de pieza | 29LV040B | |
| Descripción | AM29LV040B | |
| Fabricantes | Advanced Micro Devices | |
| Logotipo |  |
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DataSheet.in
Am29LV040B
Data Sheet
The Am29LV040B is not offered for new designs. Please contact a Spansion representative for alter-
nates.
The following document contains information on Spansion memory products. Although the document
is marked with the name of the company that originally developed the specification, Spansion will
continue to offer these products to existing customers.
Continuity of Specifications
There is no change to this data sheet as a result of offering the device as a Spansion product. Any
changes that have been made are the result of normal data sheet improvement and are noted in the
document revision summary, where supported. Future routine revisions will occur when appro and
changes will be noted in a revision summary.
Continuity of Ordering Part Numbers
Spansion continues to support existing part numbers beginning with “Am” and “MBM”. To order these
products, please use only the Ordering Part Numbers listed in this document.
For More Information
Please contact your local sales office for additional information about Spansion memory solutions.
Publication Number 21354 Revision E Amendment 4 Issue Date October 11, 2006
1 page  
DataSheet.in
DATA SHEET
TABLE OF CONTENTS
Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 6
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 9
Device Bus Operations . . . . . . . . . . . . . . . . . . . . . 10
Table 1. Am29LV040B Device Bus Operations . . . . . . . . . . . . . . .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
Output Disable Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 2. Am29LV040BT Sector Address Table . . . . . . . . . . . . . . .11
Autoselect Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 3. Am29LV040B Autoselect Codes (High Voltage Method) .12
Sector Protection/Unprotection . . . . . . . . . . . . . . . . . . . . . . . 12
Hardware Data Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Low VCC Write Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Write Pulse “Glitch” Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Logical Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Power-Up Write Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Command Definitions . . . . . . . . . . . . . . . . . . . . . . 13
Reading Array Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Reset Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Autoselect Command Sequence . . . . . . . . . . . . . . . . . . . . . . 13
Byte Program Command Sequence . . . . . . . . . . . . . . . . . . . 13
Unlock Bypass Command Sequence . . . . . . . . . . . . . . . . . . . . . . .14
Chip Erase Command Sequence . . . . . . . . . . . . . . . . . . . . . 14
Figure 1. Program Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Sector Erase Command Sequence . . . . . . . . . . . . . . . . . . . . 15
Erase Suspend/Erase Resume Commands . . . . . . . . . . . . . 15
Figure 2. Erase Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Command Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 4. Am29LV040B Command Definitions . . . . . . . . . . . . . . . . .17
Write Operation Status . . . . . . . . . . . . . . . . . . . . . 18
DQ7: Data# Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 3. Data# Polling Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . 18
DQ6: Toggle Bit I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DQ2: Toggle Bit II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Reading Toggle Bits DQ6/DQ2 . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 4. Toggle Bit Algorithm. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
DQ5: Exceeded Timing Limits . . . . . . . . . . . . . . . . . . . . . . . . 20
DQ3: Sector Erase Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 5. Write Operation Status . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Absolute Maximum Ratings . . . . . . . . . . . . . . . . 22
Figure 5. Maximum Negative Overshoot Waveform . . . . . . . . . . . 22
Figure 6. Maximum Positive Overshoot Waveform. . . . . . . . . . . . 22
Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . 22
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 7. ICC1 Current vs. Time (Showing Active and Automatic
Sleep Currents) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 8. Typical ICC1 vs. Frequency . . . . . . . . . . . . . . . . . . . . . . 24
Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 9. Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 6. Test Specifications ........................................................... 25
Key to Switching Waveforms. . . . . . . . . . . . . . . . 25
Figure 10. Input Waveforms and Measurement Levels . . . . . . . . 25
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 26
Read Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 11. Read Operations Timings . . . . . . . . . . . . . . . . . . . . . . 26
Erase/Program Operations . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 12. Program Operation Timings. . . . . . . . . . . . . . . . . . . . . 28
Figure 13. Chip/Sector Erase Operation Timings . . . . . . . . . . . . . 28
Figure 14. Data# Polling Timings (During Embedded Algorithms) 29
Figure 15. Toggle Bit Timings (During Embedded Algorithms). . . 29
Figure 16. DQ2 vs. DQ6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Alternate CE# Controlled Erase/Program Operations . . . . . . 31
Figure 17. Alternate CE# Controlled Write Operation Timings . . . 32
Erase and Programming Performance . . . . . . . 33
Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 33
TSOP and SO Pin Capacitance . . . . . . . . . . . . . . 33
Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 34
TS 032—32-Pin Standard TSOP . . . . . . . . . . . . . . . . . . . . . . 34
PL 032—32-Pin Plastic Leaded Chip Carrier . . . . . . . . . . . . 35
Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 36
October 11, 2006 21354E4
Am29LV040B
5
5 Page 
DataSheet.in
DATA SHEET
in this mode. Refer to the Autoselect Mode and Autose-
lect 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 Characteris-
tics” 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, inde-
pendent of the OE# input.
The device enters the CMOS standby mode when the
CE# pin is both held at VCC ± 0.3 V. (Note that this is a
more restricted voltage range than VIH.) If CE# is held
at VIH, 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 (tCE)
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 program-
ming, the device draws active current until the
operation is completed.
ICC3 in the DC Characteristics table 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. ICC4 in the DC
Characteristics table represents the automatic sleep
mode current specification.
Output Disable Mode
When the OE# input is at VIH, output from the device is
disabled. The output pins are placed in the high imped-
ance state.
Sector
SA0
SA1
SA2
SA3
SA4
SA5
SA6
SA7
Table 2. Am29LV040BT Sector Address Table
A18 A17 A16
000
001
010
011
100
101
110
111
Address Range
(in hexadecimal)
00000h-0FFFFh
10000h-1FFFFh
20000h-2FFFFh
30000h-3FFFFh
40000h-4FFFFh
50000h-5FFFFh
60000h-6FFFFh
70000h-7FFFFh
Autoselect Mode
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 equipment
to automatically match a device to be programmed with
its corresponding programming algorithm. However,
the autoselect codes can also be accessed in-system
through the command register.
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 3. In addition, when verifying sector protection,
the sector address must appear on the appropriate
highest order address bits (see Table 2). Table 3 shows
the remaining address bits that are don’t care. When all
necessary bits have been set as required, the program-
ming equipment may then read the corresponding
identifier code on DQ7–DQ0.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in Table 4. This method
does not require VID. See “Command Definitions” for
details on using the autoselect mode.
October 11, 2006 21354E4
Am29LV040B
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet 29LV040B.PDF ] | |
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