參數(shù)資料
型號(hào)： M25PE40
廠商： 意法半導(dǎo)體
元件分類： DRAM
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(yè)數(shù)： 35/60頁(yè)
文件大?。?/td> 315K
代理商： M25PE40
M25PE40
Instructions
35/60
6.11
Write to Lock Register (WRLR)
Note:
The Write to Lock Register (WRLR) instruction is decoded only in the in the T9HX process
(see
Important note on page 6
).
The Write to Lock Register (WRLR) instruction allows bits to be changed in the Lock
Registers. Before it can be accepted, a Write Enable (WREN) instruction must previously
have been executed. After the Write Enable (WREN) instruction has been decoded, the
device sets the Write Enable Latch (WEL).
The Write to Lock Register (WRLR) instruction is entered by driving Chip Select (S) Low,
followed by the instruction code, three address bytes (pointing to any address in the targeted
sector and one data byte on Serial Data Input (D). The instruction sequence is shown in
Figure 17
. Chip Select (S) must be driven High after the eighth bit of the data byte has been
latched in, otherwise the Write to Lock Register (WRLR) instruction is not executed.
Lock Register bits are volatile, and therefore do not require time to be written. When the
Write to Lock Register (WRLR) instruction has been successfully executed, the Write
Enable Latch (WEL) bit is reset after a delay time less than t
SHSL
minimum value.
Any Write to Lock Register (WRLR) instruction, while an Erase, Program or Write cycle is in
progress, is rejected without having any effects on the cycle that is in progress.
Figure 17.
Write to Lock Register (WRLR) instruction sequence
Table 10.
Lock Register In
(1)
1.
The table rows in gray are true for products processed in the T7X process only (see
Important note on
page 6
).
Sector
Bit
Value
All sectors
b7-b2
‘0’
b1
Sector Lock Down Bit Value
b0
Sector Write Lock Bit Value
AI10784b
C
D
S
23
2
1
3
4
5
6
7
8
9 10
28 29 30 31 32 33 34 35
22 21
3
2
1
0
36 37 38
Instruction
24-Bit Address
0
7
6
5
4
3
2
0
1
Lock Register
Value
39
MSB
MSB
相關(guān)PDF資料
PDF描述
M25PE40VMN6G 4 Mbit Uniform Sector, Serial Flash Memory
M25PE40VMN6P 4 Mbit Uniform Sector, Serial Flash Memory
M25PE40VMN6TG 4 Mbit Uniform Sector, Serial Flash Memory
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M25PE40VMP6G 1A Standard Fixed Output LDO Regulators with Shutdown Switch; Package: TO220FP-5; Constitution materials list: Packing style: Tube packaging; Package quantity: 50; Minimum package quantity: 500;
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M25PE40S-VMW6G 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Trays 制造商:Micron Technology Inc 功能描述:IC FLASH 4MBIT 75MHZ 8SO
M25PE40S-VMW6TG 制造商:Micron Technology Inc 功能描述: 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Tape and Reel
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M25PE40-VMC6TG 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Tape and Reel
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