參數(shù)資料
型號(hào)： AM29LV800BT70RFEB
廠商： ADVANCED MICRO DEVICES INC
元件分類(lèi)： PROM
英文描述： 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
中文描述： 512K X 16 FLASH 3V PROM, 70 ns, PDSO48
封裝： REVERSE, MO-142DD, TSOP-48
文件頁(yè)數(shù)： 2/42頁(yè)
文件大?。?/td> 571K
代理商： AM29LV800BT70RFEB
2
Am29LV800B
P R E L I M I N A R Y
GENERAL DESCRIPTION
The Am29LV800B is an 8 Mbit, 3.0 volt-only Flash
memory organized as 1,048,576 bytes or 524,288
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 requires only a
single, 3.0 volt V
CC
supply to perform read, program,
and erase operations. A standard EPROM pro-
grammer can also be used to program and erase the
device.
This device is manufactured using AMD’s 0.35 μm
process technology, and offers all the features and
benefits of the Am29LV800, which was manufactured
using 0.5 μm process technology. In addition, the
Am29LV800B features unlock bypass programming
and in-system sector protection/unprotection.
The standard device offers access times of 70, 80, 90
and 120 ns, allowing high speed microprocessors to
operate without wait states. To eliminate bus conten-
tion 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 sup-
ply
for both read and write functions. Internally gener-
ated and regulated voltages are provided for the
program and erase operations.
The device is entirely command set compatible with the
JEDEC single-power-supply Flash standard
. Com-
mands are written to the command register using
standard microprocessor write timings. Register con-
tents 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 auto-
matically times the program pulse widths and verifies
proper cell margin. The
Unlock Bypass
mode facili-
tates 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
algo-
rithm—an internal algorithm that automatically prepro-
grams 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.
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
V
CC
detector that automatically inhibits write opera-
tions during power transitions. The
hardware sector
protection
feature disables both program and erase
operations in any combination of the sectors of mem-
ory. This can be achieved in-system or via program-
ming equipment.
The
Erase Suspend
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 effective-
ness. The device electrically erases all bits within
a sector simultaneously via Fowler-Nordheim tun-
neling. The data is programmed using hot electron
injection.
相關(guān)PDF資料
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Am29LV800BT70RFIB 8 Megabit (1 M x 8-Bit/512 K x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM29LV800BT-90EC 制造商:Advanced Micro Devices 功能描述:NOR Flash, 512K x 16, 48 Pin, Plastic, TSSOP 制造商:Analog Devices 功能描述:NOR Flash, 512K x 16, 48 Pin, Plastic, TSSOP
AM29LV800DB-70EF 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 8M-Bit 1M x 8/512K x 16 70ns 48-Pin TSOP
AM29LV800DB-90EC 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 8M-Bit 1M x 8/512K x 16 90ns 48-Pin TSOP
AM29LV800DB-90ED 制造商:Spansion 功能描述:Flash Mem Parallel 3V/3.3V 8M-Bit 1M x 8/512K x 16 90ns 48-Pin TSOP
AM29LV800DB90EI 制造商:Advanced Micro Devices 功能描述:
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