W25M02GV
8.2.6 Write Enable (06h)
The Write Enable instruction (Figure 9) sets the Write Enable Latch (WEL) bit in the Status Register to a
1. The WEL bit must be set prior to every Page Program, Quad Page Program and Block Erase
instruction. The Write Enable instruction is entered by driving /CS low, shifting the instruction code “06h”
into the Data Input (DI) pin on the rising edge of CLK, and then driving /CS high.
/CS
Mode 3
Mode 0
0
1
2
3
4
5
6
7
Mode 3
Mode 0
CLK
Instruction (06h)
DI
(IO0)
High Impedance
DO
(IO1)
Figure 9. Write Enable Instruction
8.2.7 Write Disable (04h)
The Write Disable instruction (Figure 10) resets the Write Enable Latch (WEL) bit in the Status Register to
a 0. The Write Disable instruction is entered by driving /CS low, shifting the instruction code “04h” into the
DI pin and then driving /CS high. Note that the WEL bit is automatically reset after Power-up and upon
completion of the Page Program, Quad Page Program, Block Erase and Reset instructions.
/CS
Mode 3
Mode 0
0
1
2
3
4
5
6
7
Mode 3
Mode 0
CLK
Instruction (04h)
DI
(IO0)
High Impedance
DO
(IO1)
Figure 10. Write Disable Instruction
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