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of the FPROT registers). If the erase-verify fails the FSTAT[MGSTAT0] bit is set. The
CCIF flag is set after the Erase Flash Sector operation completes. The Erase Flash Sector
command is suspendable (see the FCNFG[ERSSUSP] bit and
).
Table 23-15. Erase Flash Sector Command Error Handling
Error Condition
Error Bit
Command not available in current mode/security
FSTAT[ACCERR]
An invalid Flash address is supplied
FSTAT[ACCERR]
Flash address is not longword aligned
FSTAT[ACCERR]
The selected program flash sector is protected
FSTAT[FPVIOL]
Any errors have been encountered during the verify operation
FSTAT[MGSTAT0]
1. User margin read may be run using the Read 1s Section command to verify all bits are erased.
23.4.10.5.1 Suspending an Erase Flash Sector Operation
To suspend an Erase Flash Sector operation set the FCNFG[ERSSUSP] bit when CCIF,
ACCERR, and FPVIOL are clear and the CCOB command field holds the code for the
Erase Flash Sector command. During the Erase Flash Sector operation (see
), the flash memory module samples the state of the ERSSUSP bit at
convenient points. If the flash memory module detects that the ERSSUSP bit is set, the
Erase Flash Sector operation is suspended and the flash memory module sets CCIF.
While ERSSUSP is set, all writes to flash registers are ignored except for writes to the
FSTAT and FCNFG registers.
If an Erase Flash Sector operation effectively completes before the flash memory module
detects that a suspend request has been made, the flash memory module clears the
ERSSUSP bit prior to setting CCIF. When an Erase Flash Sector operation has been
successfully suspended, the flash memory module sets CCIF and leaves the ERSSUSP bit
set. While CCIF is set, the ERSSUSP bit can only be cleared to prevent the withdrawal of
a suspend request before the flash memory module has acknowledged it.
23.4.10.5.2 Resuming a Suspended Erase Flash Sector Operation
If the ERSSUSP bit is still set when CCIF is cleared to launch the next command, the
previous Erase Flash Sector operation resumes. The flash memory module acknowledges
the request to resume a suspended operation by clearing the ERSSUSP bit. A new
suspend request can then be made by setting ERSSUSP. A single Erase Flash Sector
operation can be suspended and resumed multiple times.
There is a minimum elapsed time limit of 4.3 msec between the request to resume the
Erase Flash Sector operation (CCIF is cleared) and the request to suspend the operation
again (ERSSUSP is set). This minimum time period is required to ensure that the Erase
Functional Description
MKW01Z128 MCU Reference Manual, Rev. 3, 04/2016
416
Freescale Semiconductor, Inc.
Summary of Contents for MKW01Z128
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Page 233: ...Module clocks MKW01Z128 MCU Reference Manual Rev 3 04 2016 102 Freescale Semiconductor Inc...
Page 513: ...Interrupts MKW01Z128 MCU Reference Manual Rev 3 04 2016 382 Freescale Semiconductor Inc...
Page 633: ...CMP Trigger Mode MKW01Z128 MCU Reference Manual Rev 3 04 2016 502 Freescale Semiconductor Inc...