Upon clearing CCIF to launch the Program Longword command, the flash memory
module programs the data bytes into the flash using the supplied address. The targeted
flash locations must be currently unprotected (see the description of the FPROT registers)
to permit execution of the Program Longword operation.
The programming operation is unidirectional. It can only move NVM bits from the erased
state ('1') to the programmed state ('0'). Erased bits that fail to program to the '0' state are
flagged as errors in FSTAT[MGSTAT0]. The CCIF flag is set after the Program
Longword operation completes.
The supplied address must be longword aligned (flash address [1:0] = 00):
• Byte 3 data is written to the supplied byte address ('start'),
• Byte 2 data is programmed to byte address start+0b01,
• Byte 1 data is programmed to byte address start+0b10, and
• Byte 0 data is programmed to byte address start+0b11.
Table 23-13. Program Longword 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]
Flash address points to a protected area
FSTAT[FPVIOL]
Any errors have been encountered during the verify operation
FSTAT[MGSTAT0]
23.4.10.5 Erase Flash Sector Command
The Erase Flash Sector operation erases all addresses in a flash sector.
Table 23-14. Erase Flash Sector Command FCCOB Requirements
FCCOB Number
FCCOB Contents [7:0]
0
0x09 (ERSSCR)
1
Flash address [23:16] in the flash sector to be erased
2
Flash address [15:8] in the flash sector to be erased
3
in the flash sector to be erased
1. Must be longword aligned (flash address [1:0] = 00).
After clearing CCIF to launch the Erase Flash Sector command, the flash memory
module erases the selected program flash sector and then verifies that it is erased. The
Erase Flash Sector command aborts if the selected sector is protected (see the description
Chapter 23 Flash Memory Module (FTFA)
MKW01Z128 MCU Reference Manual, Rev. 3, 04/2016
Freescale Semiconductor, Inc.
415
Summary of Contents for MKW01Z128
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Page 633: ...CMP Trigger Mode MKW01Z128 MCU Reference Manual Rev 3 04 2016 502 Freescale Semiconductor Inc...