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參數(shù)資料
| 型號： | M25P32-VME6G |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | FLASH |
| 英文描述： | 4 Mbit Uniform Sector, Serial Flash Memory |
| 中文描述： | 4兆位統(tǒng)一部門，串行閃存 |
| 文件頁數(shù)： | 20/39頁 |
| 文件大?。?/td> | 506K |
| 代理商： | M25P32-VME6G |
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M25P32
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 VCC) until VCC reaches the
correct value:
–VCC(min) at Power-up, and then for a further
delay of tVSL
–VSS 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 op-
erations during Power-up, a Power On Reset
(POR) circuit is included. The logic inside the de-
vice is held reset while VCC is less than the Power
On Reset (POR) threshold voltage, VWI – all oper-
ations are disabled, and the device does not re-
spond to any instruction.
Moreover, the device ignores all Write Enable
(WREN), Page Program (PP), Sector Erase (SE),
Bulk Erase (BE) and Write Status Register
(WRSR) instructions until a time delay of tPUW has
elapsed after the moment that VCC rises above the
VWI threshold. However, the correct operation of
the device is not guaranteed if, by this time, VCC is
still below VCC(min). No Write Status Register,
Program or Erase instructions should be sent until
the later of:
–tPUW after VCC passed the VWI threshold
–tVSL after VCC passed the VCC(min) level
These values are specified in Table 8..
If the delay, tVSL, has elapsed, after VCC has risen
above VCC(min), the device can be selected for
READ instructions even if the tPUW delay is not yet
fully elapsed.
At Power-up, the device is in the following state:
–
The device is in the Standby Power 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 VCC supply. Each de-
vice in a system should have the VCC rail decou-
pled by a suitable capacitor close to the package
pins. (Generally, this capacitor is of the order of
0.1F).
At Power-down, when VCC drops from the operat-
ing voltage, to below the Power On Reset (POR)
threshold voltage, VWI, all operations are disabled
and the device does not respond to any instruc-
tion. (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.)
Figure 22. Power-up Timing
VCC
AI04009C
VCC(min)
VWI
Reset State
of the
Device
Chip Selection Not Allowed
Program, Erase and Write Commands are Rejected by the Device
tVSL
tPUW
time
Read Access allowed
Device fully
accessible
VCC(max)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M25P32-VME6P | 4 Mbit Uniform Sector, Serial Flash Memory |
| M25P32-VME6T | 4 Mbit Uniform Sector, Serial Flash Memory |
| M25P32-VME6TG | 4 Mbit Uniform Sector, Serial Flash Memory |
| M25P32-VME6TP | 4 Mbit Uniform Sector, Serial Flash Memory |
| M25P32-VMF6 | 4 Mbit Uniform Sector, Serial Flash Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M25P32VME6P | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface |
| M25P32-VME6P | 制造商:NUMONYX 制造商全稱:Numonyx B.V 功能描述:32-Mbit, low voltage, serial Flash memory with 75 MHz SPI bus interface |
| M25P32VME6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface |
| M25P32-VME6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32 Mbit, Low Voltage, Serial Flash Memory With 50MHz SPI Bus Interface |
| M25P32VME6TG | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface |
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