參數(shù)資料
型號(hào)： M25PE80-VMN6TP
廠商： 意法半導(dǎo)體
元件分類(lèi)： DRAM
英文描述： 4 Mbit Uniform Sector, Serial Flash Memory
中文描述： 4兆位統(tǒng)一部門(mén)，串行閃存
文件頁(yè)數(shù)： 44/61頁(yè)
文件大?。?/td> 326K
代理商： M25PE80-VMN6TP
Power-up and Power-down
M25PE80
44/61
7
Power-up and Power-down
At Power-up and Power-down, the device must not be selected (that is Chip Select (S) must
follow the voltage applied on V
CC
) until V
CC
reaches the correct value:
V
CC
(min) at Power-up, and then for a further delay of t
VSL
V
SS
at Power-down
Usually a simple pull-up resistor on Chip Select (S) can be used to ensure safe and proper
Power-up and Power-down.
●
●
To avoid data corruption and inadvertent write operations during power-up, a Power On
Reset (POR) circuit is included. The logic inside the device is held reset while V
CC
is less
than the Power On Reset (POR) threshold voltage, V
WI
– all operations are disabled, and
the device does not respond to any instruction.
Moreover, the device ignores all Write Enable (WREN), Page Write (PW), Page Program
(PP), Page Erase (PE), Sector Erase (SE), Bulk Erase (BE) and Write to Lock Register
(WRLR) instructions until a time delay of t
PUW
has elapsed after the moment that V
CC
rises
above the V
WI
threshold. However, the correct operation of the device is not guaranteed if,
by this time, V
CC
is still below V
CC
(min). No Write, Program or Erase instructions should be
sent until the later of:
t
PUW
after V
CC
passed the V
WI
threshold
t
VSL
after V
CC
passed the V
CC
(min) level
These values are specified in
Table 14
.
●
●
If the delay, t
VSL
, has elapsed, after V
CC
has risen above V
CC
(min), the device can be
selected for READ instructions even if the t
PUW
delay is not yet fully elapsed.
As an extra protection, the Reset (Reset) signal could be driven Low for the whole duration
of the Power-up and Power-down phases.
At Power-up, the device is in the following state:
The device is in the Standby mode (not the Deep Power-down mode).
The Write Enable Latch (WEL) bit is reset.
●
●
Normal precautions must be taken for supply rail decoupling, to stabilize the V
CC
supply.
Each device in a system should have the V
CC
rail decoupled by a suitable capacitor close to
the package pins. (Generally, this capacitor is of the order of 0.1μF).
At Power-down, when V
CC
drops from the operating voltage, to below the Power On Reset
(POR) threshold voltage, V
WI
, all operations are disabled and the device does not respond
to any instruction. (The designer needs to be aware that if a Power-down occurs while a
Write, Program or Erase cycle is in progress, some data corruption can result.)
相關(guān)PDF資料
PDF描述
M25PX32 4 Mbit Uniform Sector, Serial Flash Memory
M25PX32-VMP6E 4 Mbit Uniform Sector, Serial Flash Memory
M25PX32-VMP6F 4 Mbit Uniform Sector, Serial Flash Memory
M25PX32-VMW6E 4 Mbit Uniform Sector, Serial Flash Memory
M25PX32-VMW6F 4 Mbit Uniform Sector, Serial Flash Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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