M25PE80-VMP6TP Numonyx, B.V., M25PE80-VMP6TP Datasheet - Page 32

• Manufacturer Part Number: M25PE80-VMP6TP
• Description: 8-Mbit, page-erasable serial flash memory with byte alterability, 75 MHz SPI bus, standard pinout
• Manufacturer: Numonyx, B.V.

Instructions
32/66
Table 11.
1.
2. 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
S
C
D
Q
b7-b4
Bit
b3
b2
b1
b0
See: Important note on page
Sector lock down
Sector write lock
Subsector write
Subsector lock
0
Bit name
down
Not for new design: lock registers for the M25PE80 in T7Y process
lock
1
High Impedance
(2)
2
(2)
Instruction
3
4
Value
5
6.
‘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
Reserved
3
28 29 30 31 32 33 34 35
2
1
0
MSB
Function
7
6
Lock register out
5
4
3
36 37 38
2
1
0
39
M25PE80
AI10783
(1)