參數(shù)資料
型號(hào)： AM29F400BB-90ED
廠商： SPANSION LLC
元件分類： PROM
英文描述： Flash Memory IC; Memory Size:4Mbit; Memory Configuration:256K x 16 / 512K x 8; Package/Case:48-TSOP; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes; Supply Voltage Max:5V; Access Time, Tacc:90ns RoHS Compliant: Yes
中文描述： 256K X 16 FLASH 5V PROM, 90 ns, PDSO48
封裝： LEAD FREE, MO-142DD, TSOP-48
文件頁數(shù)： 5/43頁
文件大?。?/td> 865K
代理商： AM29F400BB-90ED
March 3, 2009 21505E6
Am29F400B
11
D A TA
SH EE T
Table 4.
Am29F400B Autoselect Codes (High Voltage Method)
L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
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
requires a high voltage (VID) on address pin A9 and
OE#. Details on this method are provided in a supple-
ment, publication number 20185. Contact an AMD
representative to obtain a copy of this 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.
Temporary Sector Unprotect
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the
RESET# pin to VID. During this mode, formerly pro-
tected 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 1 shows the algo-
rithm, and Figure 18 shows the timing diagrams, for this
feature.
Figure 1.
Temporary Sector Unprotect Operation
Description
Mode
CE#
OE#
WE#
A17
to
A12
A11
to
A10
A9
A8
to
A7
A6
A5
to
A2
A1
A0
DQ8
to
DQ15
DQ7
to
DQ0
Manufacturer ID: AMD
L
H
X
VID
XLXL
L
X
01h
Device ID:
Am29F400B
(Top Boot Block)
Word
L
H
XX
VID
XLXL
H
22h
23h
Byte
L
H
X
23h
Device ID:
Am29F400B
(Bottom Boot Block)
Word
L
H
XX
VID
XLXL
H
22h
ABh
Byte
L
H
X
ABh
Sector Protection Verification
L
H
SA
X
VID
XLX
H
L
X
01h
(protected)
X
00h
(unprotected)
START
Perform Erase or
Program Operations
RESET# = VIH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = VID
(Note 1)
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once
again.
相關(guān)PDF資料
PDF描述
AM29F400BT-120EF Flash Memory IC; Leaded Process Compatible:Yes; Memory Size:4Mbit; Package/Case:48-TSOP; Peak Reflow Compatible (260 C):Yes; Supply Voltage Max:5V; Access Time, Tacc:120ns; Series:AM29 RoHS Compliant: Yes
AM29F400BT-55ED Flash Memory IC; Leaded Process Compatible:Yes; Memory Size:4Mbit; Package/Case:48-TSOP; Peak Reflow Compatible (260 C):Yes; Supply Voltage Max:5V; Access Time, Tacc:55ns; Series:AM29 RoHS Compliant: Yes
AM29F400BT-70EC Flash Memory IC; Access Time, Tacc:70ns; Package/Case:48-TSOP; Leaded Process Compatible:No; Memory Configuration:256K x 16 / 512K x 8; Peak Reflow Compatible (260 C):No; Supply Voltage Max:5.5V; Mounting Type:Surface Mount RoHS Compliant: No
AM29F400BT-70ED Flash Memory IC; Memory Configuration:256K x 16 / 512K x 8; Package/Case:48-TSOP; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes; Supply Voltage Max:5.5V; Access Time, Tacc:70ns; Mounting Type:Surface Mount RoHS Compliant: Yes
AM29F400BT-70SD Flash Memory IC; Leaded Process Compatible:Yes; Memory Size:4Mbit; Package/Case:44-SOIC; Peak Reflow Compatible (260 C):Yes; Supply Voltage Max:5V; Access Time, Tacc:70ns; Series:AM29 RoHS Compliant: Yes
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM29F400BB-90EF 功能描述:閃存 4M (512KX8/256Kx16) Parallel NOR Fl 5V RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲(chǔ)類型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類型: 接口類型:SPI 訪問時(shí)間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
AM29F400-BB90EI 制造商:Advanced Micro Devices 功能描述:
AM29F400BB-90EI 制造商:Spansion 功能描述:NOR Flash Parallel 5V 4Mbit 512K/256K x 8bit/16bit 90ns 48-Pin TSOP 制造商:Spansion 功能描述:4M CMOS FLASH 5V 制造商:Advanced Micro Devices 功能描述:NOR Flash, 256K x 16, 48 Pin, Plastic, TSSOP
AM29F400BB-90EK 制造商:Spansion 功能描述:
AM29F400BB-90SD 制造商:Spansion 功能描述:Flash Memory IC
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