參數(shù)資料
型號(hào)： AM29LV256MH128EI
廠商： ADVANCED MICRO DEVICES INC
元件分類： PROM
英文描述： 16M X 16 FLASH 3V PROM, 120 ns, PDSO56
封裝： TSOP-56
文件頁(yè)數(shù)： 17/63頁(yè)
文件大?。?/td> 1515K
代理商： AM29LV256MH128EI
24
Am29LV256M
September 9, 2002
A D VA NCE
I N FO RM ATIO N
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 equip-
ment to automatically match a device to be pro-
grammed with its corr es ponding programmi ng
algorithm. However, the autoselect codes can also be
accessed in-system through the command register.
When using programming equipment, the autoselect
mode requires V
ID on address pin A9. Address pins
A6, A3, A2, 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 remain-
ing address bits that are don’t care. When all neces-
sary bits have been set as required, the programming
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 Tables 9 and 10. This
method does not require V
ID. Refer to the Autoselect
Command Sequence section for more information.
Table 3.
Autoselect Codes, (High Voltage Method)
Legend: L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care.
Sector Protection and Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both pro-
gram and erase operations in previously protected
sectors. Sector protection/unprotection can be imple-
mented via two methods.
Sector protection/unprotection requires V
ID on the RE-
SET# pin only, and can be implemented either in-sys-
tem or via programming equipment. Figure 2 shows
the algorithms and Figure 23 shows the timing dia-
gram. This method uses standard microprocessor bus
cycle timing. For sector unprotect, all unprotected sec-
tors must first be protected prior to the first sector un-
protect write cycle.
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 pro-
tected or unprotected. See the Autoselect Mode sec-
tion for details.
Description
CE#
OE#
WE#
A22
to
A15
A14
to
A10
A9
A8
to
A7
A6
A5
to
A4
A3
to
A2
A1
A0
DQ8 to DQ15
DQ7 to DQ0
BYTE#
= V
IH
BYTE#
= V
IL
Manufacturer ID: AMD
L
H
X
VID
X
L
X
LLL
00
X
01h
D
e
vice
I
D
Cycle 1
LL
H
X
VID
XL
X
LL
H
22
X
7Eh
Cycle 2
H
L
22
X
12h
Cycle 3
H
22
X
01h
Sector Protection
Verification
LL
H
SA
X
VID
XL
X
L
H
L
X
01h (protected),
00h (unprotected)
SecSi Sector Indicator
Bit (DQ7), WP#
protects highest
address sector
LL
H
X
VID
XL
X
L
H
X
98h (factory locked),
18h (not factory locked)
SecSi Sector Indicator
Bit (DQ7), WP#
protects lowest
address sector
LL
H
X
VID
XL
X
L
H
X
88h (factory locked),
08h (not factory locked)
相關(guān)PDF資料
PDF描述
AM29LV256MH118REI 16M X 16 FLASH 3V PROM, 110 ns, PDSO56
AM29PDL127H83PCIN 128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only, Page Mode Simultaneous Read/Write Flash Memory with Enhanced VersatileIO Control
AM29PDL127H83VKIN 128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only, Page Mode Simultaneous Read/Write Flash Memory with Enhanced VersatileIO Control
AM29PDL127H85PCI 128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only, Page Mode Simultaneous Read/Write Flash Memory with Enhanced VersatileIO Control
AM29PDL127H85PCIN 128 Megabit (8 M x 16-Bit) CMOS 3.0 Volt-only, Page Mode Simultaneous Read/Write Flash Memory with Enhanced VersatileIO Control
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM29LV256MH94REI 制造商:Spansion 功能描述:256M (32MX8/16MX16) 3V REG, MIRRORBIT, TSOP56, IND - Trays
AM29LV320DB120EI 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 120ns 48-Pin TSOP
AM29LV320DB120WMI 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 120ns 48-Pin FBGA
AM29LV320DB90EC 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP
AM29LV320DB90ED 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 32M-Bit 4M x 8/2M x 16 90ns 48-Pin TSOP
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*