数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

AM29F040B-90PI 数据表(PDF) 11 Page - Advanced Micro Devices

部件名 AM29F040B-90PI
功能描述  4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
Download  36 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AMD [Advanced Micro Devices]
网页  http://www.amd.com
标志 AMD - Advanced Micro Devices

AM29F040B-90PI 数据表(HTML) 11 Page - Advanced Micro Devices

Back Button AM29F040B-90PI Datasheet HTML 7Page - Advanced Micro Devices AM29F040B-90PI Datasheet HTML 8Page - Advanced Micro Devices AM29F040B-90PI Datasheet HTML 9Page - Advanced Micro Devices AM29F040B-90PI Datasheet HTML 10Page - Advanced Micro Devices AM29F040B-90PI Datasheet HTML 11Page - Advanced Micro Devices AM29F040B-90PI Datasheet HTML 12Page - Advanced Micro Devices AM29F040B-90PI Datasheet HTML 13Page - Advanced Micro Devices AM29F040B-90PI Datasheet HTML 14Page - Advanced Micro Devices AM29F040B-90PI Datasheet HTML 15Page - Advanced Micro Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 36 page
background image
November 1, 2006 21445E5
Am29F040B
9
D A TA
SH EE T
Autoselect Mode
The autoselect mode provides manufacturer and de-
vice 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
Autoselect Codes (High Voltage Method) table. In addi-
tion, when verifying sector protection, the sector
address must appear on the appropriate highest order
address bits. Refer to the corresponding Sector Ad-
dress Tables. The Command Definitions table 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 the Command Defini-
tions table. This method does not require VID. See
“Command Definitions” for details on using the autose-
lect mode.
Table 3.
Am29F040B Autoselect Codes (High Voltage Method)
Sector Protection/Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both
program and erase operations in previously protected
sectors.
Sector protection/unprotection must be implemented
using programming equipment. The procedure re-
quires a high voltage (VID) on address pin A9 and the
control pins. Details on this method are provided in a
supplement, publication number 19957. Contact an
AMD representative to obtain a copy of the appropriate
document.
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.
Hardware Data Protection
The command sequence requirement of unlock cycles
for programming or erasing provides data protection
against inadvertent writes (refer to the Command Defi-
nitions table). In addition, the following hardware data
protection measures prevent accidental erasure or pro-
gramming, 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 ac-
cept 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 uninten-
tional writes when VCC is greater than VLKO.
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.
Description
A18–A16
A15–A10
A9
A8–A7
A6
A5–A2
A1
A0
Identifier Code on
DQ7-DQ0
Manufacturer ID: AMD
X
X
VID
X
VIL
X
VIL
VIL
01h
Device ID: Am29F040B
X
X
VID
X
VIL
X
VIL
VIH
A4h
Sector Protection
Verification
Sector
Address
X
VID
X
VIL
X
VIH
VIL
01h (protected)
00h (unprotected)


类似零件编号 - AM29F040B-90PI

制造商部件名数据表功能描述
logo
Advanced Micro Devices
AM29F040B-90PI AMD-AM29F040B-90PI Datasheet
790Kb / 35P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F040B-90PI AMD-AM29F040B-90PI Datasheet
394Kb / 30P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F040B-90PIB AMD-AM29F040B-90PIB Datasheet
394Kb / 30P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
More results

类似说明 - AM29F040B-90PI

制造商部件名数据表功能描述
logo
Advanced Micro Devices
AM29F040B AMD-AM29F040B Datasheet
394Kb / 30P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
logo
SPANSION
AM29F040B-09 SPANSION-AM29F040B-09 Datasheet
918Kb / 36P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
logo
Force Technologies Ltd
FT29F040B FORCE-FT29F040B Datasheet
3Mb / 36P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
logo
Advanced Micro Devices
AM29F040B-1 AMD-AM29F040B-1 Datasheet
790Kb / 35P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F004B AMD-AM29F004B Datasheet
993Kb / 37P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
logo
SPANSION
AM29F004B SPANSION-AM29F004B_06 Datasheet
944Kb / 37P
   4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
AM29F010B SPANSION-AM29F010B_06 Datasheet
951Kb / 33P
   1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F010B SPANSION-AM29F010B Datasheet
849Kb / 35P
   1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
logo
Advanced Micro Devices
AM29F010 AMD-AM29F010 Datasheet
370Kb / 31P
   1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
AM29F010A AMD-AM29F010A Datasheet
389Kb / 31P
   1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com