M25P40-VMN6TPSO NUMONYX, M25P40-VMN6TPSO Datasheet - Page 24
![IC FLASH 4MBIT 50MHZ 8SOIC](/photos/7/28/72827/m25p40-vmn6tp_sml.jpg)
M25P40-VMN6TPSO
Manufacturer Part Number
M25P40-VMN6TPSO
Description
IC FLASH 4MBIT 50MHZ 8SOIC
Manufacturer
NUMONYX
Series
Forté™r
Datasheet
1.M25P40-VMP6G.pdf
(61 pages)
Specifications of M25P40-VMN6TPSO
Format - Memory
FLASH
Memory Type
FLASH
Memory Size
4M (512K x 8)
Speed
50MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
M25P40-VMN6TPSOCT
6.5
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Write Status Register (WRSR)
The Write Status Register (WRSR) instruction allows new values to be written to the Status
Register. Before it can be accepted, a Write Enable (WREN) instruction must previously
have been executed. After the Write Enable (WREN) instruction has been decoded and
executed, the device sets the Write Enable Latch (WEL).
The Write Status Register (WRSR) instruction is entered by driving Chip Select (S) Low,
followed by the instruction code and the data byte on Serial Data input (D).
The instruction sequence is shown in
The Write Status Register (WRSR) instruction has no effect on b6, b5, b1 and b0 of the
Status Register. b6 and b5 are always read as 0.
Chip Select (S) must be driven High after the eighth bit of the data byte has been latched in.
If not, the Write Status Register (WRSR) instruction is not executed. As soon as Chip Select
(S) is driven High, the self-timed Write Status Register cycle (whose duration is t
initiated. While the Write Status Register cycle is in progress, the Status Register may still
be read to check the value of the Write In Progress (WIP) bit. The Write In Progress (WIP)
bit is 1 during the self-timed Write Status Register cycle, and is 0 when it is completed.
When the cycle is completed, the Write Enable Latch (WEL) is reset.
The Write Status Register (WRSR) instruction allows the user to change the values of the
Block Protect (BP2, BP1, BP0) bits, to define the size of the area that is to be treated as
read-only, as defined in
the user to set or reset the Status Register Write Disable (SRWD) bit in accordance with the
Write Protect (W) signal. The Status Register Write Disable (SRWD) bit and Write Protect
(W) signal allow the device to be put in the Hardware Protected Mode (HPM). The Write
Status Register (WRSR) instruction is not executed once the Hardware Protected Mode
(HPM) is entered.
Figure 11. Write Status Register (WRSR) instruction sequence
S
C
D
Q
Table
0
1
High Impedance
2. The Write Status Register (WRSR) instruction also allows
2
Instruction
3
4
Figure
5
6
11.
7
MSB
7
8
6
9 10 11 12 13 14 15
5
Register In
4
Status
3
2
1
0
AI02282D
W
) is