M25PE80-VMP6G STMicroelectronics, M25PE80-VMP6G Datasheet - Page 31

• Manufacturer Part Number: M25PE80-VMP6G
• Description: SERIAL FLASH
• Manufacturer: STMicroelectronics

M25PE80
Table 11.
1. Valid only for sector 0 and sector 15 (the value ‘0’ is returned for other sectors).
Figure 14. Read Lock Register (RDLR) instruction sequence and data-out Sequence
b7-b4
S
C
D
Q
Bit
b3
b2
b1
b0
Subsector Write
Subsector Lock
Sector Write
Sector Lock
0
Bit Name
Down
Lock
Not for new design: Lock Registers for the M25PE80 in T7Y process
(see
Down
Lock
1
High Impedance
(1)
2
(1)
Instruction
Important note on page
3
4
Value
5
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
6
7
This functionality must not be used for new designs, as the
M25PE80 delivered from Feb 2007 will not offer this functionality.
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.
This functionality must not be used for new designs, as the
M25PE80 delivered from Feb 2007 will not offer this functionality.
The Write Lock and Lock Down Bits can be changed by writing
new values to them. (Default value).
This functionality must not be used for new designs, as the
M25PE80 delivered from Feb 2007 will not offer this functionality.
Write, Program and Erase operations in this subsector will not be
executed. The memory contents will not be changed.
This functionality must not be used for new designs, as the
M25PE80 delivered from Feb 2007 will not offer this functionality.
Write, Program and Erase operations in this subsector are
executed and will modify the subsector contents. (Default value).
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.
The Write Lock and Lock Down Bits can be changed by writing
new values to them. (Default value).
Write, Program and Erase operations in this sector will not be
executed. The memory contents will not be changed.
Write, Program and Erase operations in this sector are executed
and will modify the sector contents. (Default value).
MSB
23
8
22 21
9 10
24-Bit Address
6)
Reserved
3
28 29 30 31 32 33 34 35
2
1
0
MSB
7
Function
6
Lock Register Out
5
4
3
36 37 38
2
1
0
39
Instructions
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