參數(shù)資料
型號(hào)： S71AL016M40
廠商： Spansion Inc.
英文描述： Stacked Multi-Chip Product (MCP) Flash Memory and RAM
中文描述： 堆疊式多芯片產(chǎn)品（MCP）的閃存和RAM
文件頁(yè)數(shù)： 14/68頁(yè)
文件大小： 728K
代理商： S71AL016M40
14
S71AL016M
S71AL016M_M0 A0 February 23, 2005
A d v a n c e I n f o r m a t i o n
General Description
The S29AL016M is a 16 Mbit, 3.0 Volt-only Flash memory organized as
1,048,576 words. The word-wide data (x16) appears on DQ15–DQ0. The device
requires only a
single 3.0 volt power supply
for both read and write func-
tions, designed to be programmed in-system with the standard system 3.0 volt
V
CC
supply. The device can also be programmed in standard
EPROM programmers.
To eliminate bus contention the device contains separate chip enable (CE#),
write enable (WE#) and output enable (OE#) controls.
The device is entirely command set compatible with the
JEDEC single-power-
supply Flash standard
. Commands are written to the device using standard
microprocessor write timing. Write cycles also internally latch addresses and
data needed for the programming and erase operations.
The
sector erase architecture
allows memory sectors to be erased and repro-
grammed without affecting the data contents of other sectors. The device is fully
erased when shipped from the factory.
Device programming and erasure are initiated through command sequences.
Once a program or erase operation begins, the host system need only poll the
DQ7 (Data# Polling) or DQ6 (toggle)
status bits
or monitor the
Ready/Busy#
(RY/BY#)
output to determine whether the operation is complete. To facilitate
programming, an
Unlock Bypass
mode reduces command sequence overhead
by requiring only two write cycles to program data instead of four.
Hardware data protection
measures include a low V
CC
detector that automat-
ically inhibits write operations during power transitions. The hardware sector
protection feature disables both program and erase operations in any combina-
tion of sectors of memory. This can be achieved in-system or via programming
equipment.
The
Erase Suspend/Erase Resume
feature allows the host system to pause
an erase operation in a given sector to read or program any other sector and
then complete the erase operation. The
Program Suspend/Program Resume
feature enables the host system to pause a program operation in a given sector
to read any other sector and then complete the program operation.
The
hardware RESET# pin
terminates any operation in progress and resets
the device, after which it is then ready for a new operation. The RESET# pin
may be tied to the system reset circuitry. A system reset would thus also reset
the device, enabling the host system to read boot-up firmware from the Flash
memory device.
The device reduces power consumption in the
standby mode
when it detects
specific voltage levels on CE# and RESET#, or when addresses are stable for a
specified period of time.
The
SecSi
(Secured Silicon) Sector
provides a 128-word area for code or
data that can be permanently protected. Once this sector is protected, no fur-
ther changes within the sector can occur.
MirrorBit flash technology combines years of Flash memory manufacturing ex-
perience to produce the highest levels of quality, reliability and cost
effectiveness. The device electrically erases all bits within a sector simulta-
neously via hot-hole assisted erase. The data is programmed using hot electron
injection.
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