Datasheet

Instructions M95320-W M95320-R M95320-DF
18/46 Doc ID 5711 Rev 15
6.2 Write Disable (WRDI)
One way of resetting the Write Enable Latch (WEL) bit is to send a Write Disable instruction
to the device.
As shown in Figure 8, to send this instruction to the device, Chip Select (S
) is driven low,
and the bits of the instruction byte are shifted in, on Serial Data Input (D).
The device then enters a wait state. It waits for a the device to be deselected, by Chip Select
(S
) being driven high.
The Write Enable Latch (WEL) bit, in fact, becomes reset by any of the following events:
● Power-up
● WRDI instruction execution
● WRSR instruction completion
● WRITE instruction completion.
Figure 8. Write Disable (WRDI) sequence
C
D
AI03750D
S
Q
21 34567
High Impedance
0
Instruction