參數(shù)資料
型號(hào)： S71PL191HB0BFI100
廠商： SPANSION LLC
元件分類： 存儲(chǔ)器
英文描述： SPECIALTY MEMORY CIRCUIT, PBGA73
封裝： 9 X 13 MM, LEAD FREE, FBGA-73
文件頁數(shù)： 172/172頁
文件大小： 4662K
代理商： S71PL191HB0BFI100
May 7, 2004 S29JL064HA1
S29JL064H
3
Pre l i m i n a r y
lowing removal of EEPROM devices. DMS will also allow the system software to
be simplified, as it will perform all functions necessary to modify data in file struc-
tures, as opposed to single-byte modifications. To write or update a particular
piece of data (a phone number or configuration data, for example), the user only
needs to state which piece of data is to be updated, and where the updated data
is located in the system. This is an advantage compared to systems where user-
written software must keep track of the old data location, status, logical to phys-
ical translation of the data onto the Flash memory device (or memory devices),
and more. Using DMS, user-written software does not need to interface with the
Flash memory directly. Instead, the user's software accesses the Flash memory
by calling one of only six functions.
The device offers complete compatibility with the JEDEC 42.4 sin-
gle-power-supply Flash command set standard. Commands are written to
the command register using standard microprocessor write timings. Reading data
out of the device is similar to reading from other Flash or EPROM devices.
The host system can detect whether a program or erase operation is complete by
using the device status bits: RY/BY# pin, DQ7 (Data# Polling) and DQ6/DQ2
(toggle bits). After a program or erase cycle has been completed, the device au-
tomatically returns to the read mode.
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.
Hardware data protection measures include a low VCC 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 the sectors of memory. This can be achieved in-system or via
programming equipment.
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 consump-
tion is greatly reduced in both modes.
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