![NXP Semiconductors Kinetis KE1xZ256 Reference Manual Download Page 340](http://html1.mh-extra.com/html/nxp-semiconductors/kinetis-ke1xz256/kinetis-ke1xz256_reference-manual_1721813340.webp)
16.5.11.9 Read 1s All Blocks Command
The Read 1s All Blocks command checks if the program flash blocks, data flash blocks,
EEPROM backup records, and data flash IFR have been erased to the specified read
margin level, if applicable, and releases security if the readout passes, i.e. all data reads as
'1'.
Table 16-27. Read 1s All Blocks Command FCCOB Requirements
FCCOB Number
FCCOB Contents [7:0]
0
0x40 (RD1ALL)
1
Read-1 Margin Choice
After clearing CCIF to launch the Read 1s All Blocks command, the FTFE :
• sets the read margin for 1s according to
,
• checks the contents of the program flash, data flash, EEPROM backup records, and
data flash IFR are in the erased state.
If the FTFE confirms that these memory resources are erased, access control is disabled
and security is released by setting the FSEC[SEC] field to the unsecure state. The
security byte in the flash configuration field (see
Flash configuration field description
)
remains unaffected by the Read 1s All Blocks command. If the read fails, i.e. all flash
memory resources are not in the fully erased state, the FSTAT[MGSTAT0] bit is set.
The EEERDY and RAMRDY bits are clear during the Read 1s All Blocks operation and
are restored at the end of the Read 1s All Blocks operation.
The CCIF flag sets after the Read 1s All Blocks operation has completed.
Table 16-28. Margin Level Choices for Read 1s All Blocks
Read Margin Choice
Margin Level Description
0x00
Use the 'normal' read level for 1s
0x01
Apply the 'User' margin to the normal read-1 level
0x02
Apply the 'Factory' margin to the normal read-1 level
Table 16-29. Read 1s All Blocks Command Error Handling
Error Condition
Error Bit
Command not available in current mode/security
FSTAT[ACCERR]
An invalid margin choice is specified
FSTAT[ACCERR]
Read-1s fails
FSTAT[MGSTAT0]
Functional Description
Kinetis KE1xZ256 Sub-Family Reference Manual, Rev. 3, 07/2018
340
NXP Semiconductors
Summary of Contents for Kinetis KE1xZ256
Page 2: ...Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 2 NXP Semiconductors...
Page 178: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 178 NXP Semiconductors...
Page 356: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 356 NXP Semiconductors...
Page 410: ...Interrupts Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 410 NXP Semiconductors...
Page 604: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 604 NXP Semiconductors...
Page 634: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 634 NXP Semiconductors...
Page 674: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 674 NXP Semiconductors...
Page 820: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 820 NXP Semiconductors...
Page 1030: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1030 NXP Semiconductors...
Page 1052: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1052 NXP Semiconductors...
Page 1066: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1066 NXP Semiconductors...
Page 1268: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1268 NXP Semiconductors...
Page 1314: ...Usage Guide Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1314 NXP Semiconductors...
Page 1316: ...Kinetis KE1xZ256 Sub Family Reference Manual Rev 3 07 2018 1316 NXP Semiconductors...