參數(shù)資料
型號(hào)： M25P40
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)： 32/51頁(yè)
文件大?。?/td> 398K
代理商： M25P40
Instructions
M25P40
32/51
6.12
Release from Deep Power-down and Read Electronic
Signature (RES)
Once the device has entered the Deep Power-down mode, all instructions are ignored
except the Release from Deep Power-down and Read Electronic Signature (RES)
instruction. Executing this instruction takes the device out of the Deep Power-down mode.
The instruction can also be used to read, on Serial Data Output (Q), the 8-bit Electronic
Signature, whose value for the
M25P40
is
12h
.
Except while an Erase, Program or Write Status Register cycle is in progress, the Release
from Deep Power-down and Read Electronic Signature (RES) instruction always provides
access to the 8-bit Electronic Signature of the device, and can be applied even if the Deep
Power-down mode has not been entered.
Any Release from Deep Power-down and Read Electronic Signature (RES) instruction while
an Erase, Program or Write Status Register cycle is in progress, is not decoded, and has no
effect on the cycle that is in progress.
The device is first selected by driving Chip Select (S) Low. The instruction code is followed
by 3 dummy bytes, each bit being latched-in on Serial Data Input (D) during the rising edge
of Serial Clock (C). Then, the 8-bit Electronic Signature, stored in the memory, is shifted out
on Serial Data Output (Q), each bit being shifted out during the falling edge of Serial Clock
(C).
The instruction sequence is shown in
Figure 18
.
The Release from Deep Power-down and Read Electronic Signature (RES) instruction is
terminated by driving Chip Select (S) High after the Electronic Signature has been read at
least once. Sending additional clock cycles on Serial Clock (C), while Chip Select (S) is
driven Low, cause the Electronic Signature to be output repeatedly.
When Chip Select (S) is driven High, the device is put in the Standby Power mode. If the
device was not previously in the Deep Power-down mode, the transition to the Standby
Power mode is immediate. If the device was previously in the Deep Power-down mode,
though, the transition to the Standby Power mode is delayed by t
RES2
, and Chip Select (S)
must remain High for at least t
RES2
(max), as specified in
Table 18
. Once in the Standby
Power mode, the device waits to be selected, so that it can receive, decode and execute
instructions.
Driving Chip Select (S) High after the 8
-
bit instruction byte has been received by the device,
but before the whole of the 8-bit Electronic Signature has been transmitted for the first time
(as shown in
Figure 19
), still ensures that the device is put into Standby Power mode. If the
device was not previously in the Deep Power-down mode, the transition to the Standby
Power mode is immediate. If the device was previously in the Deep Power-down mode,
though, the transition to the Standby Power mode is delayed by t
RES1
, and Chip Select (S)
must remain High for at least t
RES1
(max), as specified in
Table 18
. Once in the Standby
Power mode, the device waits to be selected, so that it can receive, decode and execute
instructions.
相關(guān)PDF資料
PDF描述
M25PE10-VMN6G 4 Mbit Uniform Sector, Serial Flash Memory
M25PE20-VMP6TP 4 Mbit Uniform Sector, Serial Flash Memory
M25PE10-VMN6P 4 Mbit Uniform Sector, Serial Flash Memory
M25PE10-VMP6G 4 Mbit Uniform Sector, Serial Flash Memory
M25PE10-VMP6P 4 Mbit Uniform Sector, Serial Flash Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M25P40_07 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit, low voltage, serial Flash memory with 50 MHz SPI bus interface
M25P40_12 制造商:MICRON 制造商全稱(chēng):Micron Technology 功能描述:Micron M25P40 Serial Flash Embedded Memory
M25P40-VMB3TPB 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE - Tape and Reel
M25P40-VMB3TPB TR 制造商:Micron Technology Inc 功能描述:IC FLASH 4MBIT 75MHZ 8UFDFPN
M25P40-VMB6TPB 制造商:Micron Technology Inc 功能描述:4MBIT SPI NOR FLASH 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE FLASH - Cut TR (SOS) 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE FLASH - Tape and Reel 制造商:Micron Technology Inc 功能描述:NOR Flash Serial-SPI 2.5V/3.3V 4Mbit 512K x 8bit 8ns 8-Pin UFDFPN EP T/R
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