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參數(shù)資料
| 型號： | M25PE40 |
| 廠商： | 意法半導體 |
| 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 |
| 文件頁數(shù)： | 30/60頁 |
| 文件大小： | 315K |
| 代理商： | M25PE40 |
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Instructions
M25PE40
30/60
6.8
Read Lock Register (RDLR)
Note:
The Read Lock Register (RDLR) instruction is decoded only in the in the T9HX process
(see
Important note on page 6
).
The device is first selected by driving Chip Select (S) Low. The instruction code for the Read
Lock Register (RDLR) instruction is followed by a 3-byte address (A23-A0) pointing to any
location inside the concerned sector (or subsector). Each address bit is latched-in during
the rising edge of Serial Clock (C). Then the value of the Lock Register is shifted out on
Serial Data Output (Q), each bit being shifted out, at a maximum frequency f
C
, during the
falling edge of Serial Clock (C).
The instruction sequence is shown in
Figure 14
.
The Read Lock Register (RDLR) instruction is terminated by driving Chip Select (S) High at
any time during data output.
Any Read Lock Register (RDLR) instruction, while an Erase, Program or Write cycle is in
progress, is rejected without having any effects on the cycle that is in progress.
Table 9.
Figure 14.
Read Lock Register (RDLR) instruction sequence and data-out Sequence
Lock Registers
Bit
Bit Name
Value
Function
b7-b4
Reserved
b1
Sector Lock
Down
‘1’
The Write Lock and Lock Down Bits cannot be changed. Once a
‘1’ is written to the Lock Down Bit it cannot be cleared to ‘0’,
except by a Reset or power-up.
‘0’
The Write Lock and Lock Down Bits can be changed by writing
new values to them. (Default value).
b0
Sector Write
Lock
‘1’
Write, Program and Erase operations in this sector will not be
executed. The memory contents will not be changed.
‘0’
Write, Program and Erase operations in this sector are executed
and will modify the sector contents. (Default value).
C
D
AI10783
S
Q
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
7
6
5
4
3
1
0
High Impedance
Lock Register Out
Instruction
24-Bit Address
0
MSB
MSB
2
39
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| M25PE40VMN6G | 4 Mbit Uniform Sector, Serial Flash Memory |
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相關代理商/技術參數(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 |
| M25PE40S-VMW6TG TR | 制造商:Micron Technology Inc 功能描述:IC FLASH 4MBIT 75MHZ 8SO |
| M25PE40-VMC6G | 功能描述:IC SRL FLSH 4MB 75MHZ 8MLP RoHS:是 類別:集成電路 (IC) >> 存儲器 系列:Forté™ 標準包裝:2,000 系列:- 格式 - 存儲器:RAM 存儲器類型:SRAM - 異步 存儲容量:256K (32K x 8) 速度:15ns 接口:并聯(lián) 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:28-TSSOP（0.465"，11.8mm 寬） 供應商設備封裝:28-TSOP 包裝:帶卷 (TR) 其它名稱:71V256SA15PZGI8 |
| M25PE40-VMC6TG | 制造商:Micron Technology Inc 功能描述:SERIAL NOR - Tape and Reel |
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