30.3.1.2 Write Disable
CMD[7:0]=0x04
EZP_CK
EZP_CS
EZP_D
EZP_Q
Figure 30-3. Write Disable command sequence
The Write Disable (WRDI) command clears the write enable register field in the status
register. This command must not be used if a write is already in progress.
30.3.1.3 Read Status Register
CMD[7:0]=0x05
SR[7:0]
EZP_CK
EZP_CS
EZP_D
EZP_Q
Figure 30-4. Read Status Register command sequence
The Read Status Register (RDSR) command returns the contents of the EzPort status
register.
Table 30-3. EzPort status register
7 6 5 4 3 2 1 0
R FS WEF BEDIS WEN WIP
W
Reset:
0/1
1
0 0 0 0 0/1
3
0 1
4
1. Reset value reflects the status of flash security out of reset.
3. Reset value reflects whether bulk erase is enabled or disabled out of reset.
Command definition
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
686 NXP Semiconductors
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