30.3.1.6 Section Program
CMD[7:0]=0x02 ADDRESS[23:0] DATA0[7:0] DATAn[7:0]
EZP_CK
EZP_CS
EZP_D
EZP_Q
Figure 30-7. Section Program command sequence
The Section Program (SP) command programs up to one section of flash memory that has
previously been erased. Please see the Flash Memory chapter for a definition of section
size. The starting address of the memory to program is sent after the command word and
must be a 32-bit aligned address with the two LSBs being zero.
As data is shifted in, the EzPort buffers the data in System RAM before sequentially
moving the data into flash using the Program Longword command. For this reason, the
number of bytes to be programmed must be a multiple of 4 and up to one flash section
can be programmed at a time. For more details, see the Flash Memory Module.
Attempts to program from an initial address which does not fall within the valid address
range for the flash causes the WEF flag to set. See Flash memory map for EzPort access.
This command is not accepted if the WEF, WIP, or FS field is set or if the WEN field is
not set in the EzPort status register.
30.3.1.7
Sector Erase
CMD[7:0]=0xD8 ADDRESS[23:0]
EZP_CK
EZP_CS
EZP_D
EZP_Q
Figure 30-8. Sector Erase command sequence
Chapter 30 EzPort
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 689
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