M25P64-VME6TP Numonyx, B.V., M25P64-VME6TP Datasheet - Page 27
M25P64-VME6TP
Manufacturer Part Number
M25P64-VME6TP
Description
64 Mbit, low voltage, Serial Flash memory with 50 MHz SPI bus interface
Manufacturer
Numonyx, B.V.
Datasheet
1.M25P64-VME6TP.pdf
(50 pages)
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M25P64
6.4.4
SRWD bit
The Status Register Write Disable (SRWD) bit is operated in conjunction with the Write
Protect (W/V
(W/V
Register Write Disable (SRWD) bit is set to 1, and Write Protect (W/V
this mode, the non-volatile bits of the Status Register (SRWD, BP2, BP1, BP0) become
read-only bits and the Write Status Register (WRSR) instruction is no longer accepted for
execution.
Figure 11. Read Status Register (RDSR) instruction sequence and data-out
S
C
D
Q
PP
) signal allow the device to be put in the Hardware Protected mode (when the Status
PP
sequence
0
High Impedance
) signal. The Status Register Write Disable (SRWD) bit and Write Protect
1
2
Instruction
3
4
5
6
7
MSB
7
8
6
Status Register Out
9 10 11 12 13 14 15
5
4
3
2
1
0
MSB
7
6
Status Register Out
5
4
PP
3
) is driven Low). In
2
1
Instructions
0
7
AI02031E
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