参数资料
型号: M25PE10-VMN6P
厂商: 意法半导体
元件分类: DRAM
英文描述: 4 Mbit Uniform Sector, Serial Flash Memory
中文描述: 4兆位统一部门,串行闪存
文件页数: 32/60页
文件大小: 310K
代理商: M25PE10-VMN6P
Instructions
M25PE20, M25PE10
32/60
6.8
Read Lock Register (RDLR)
Note:
The Read Lock Register (RDLR) instruction is decoded only 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 15
.
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 11.
Figure 15.
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
相关PDF资料
PDF描述
M25PE10-VMP6G 4 Mbit Uniform Sector, Serial Flash Memory
M25PE10-VMP6P 4 Mbit Uniform Sector, Serial Flash Memory
M25PE10-VMP6TG 4 Mbit Uniform Sector, Serial Flash Memory
M25PE10-VMP6TP 4 Mbit Uniform Sector, Serial Flash Memory
M25PE20_07 4 Mbit Uniform Sector, Serial Flash Memory
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