Datasheet

CAUTION

An EEPROM byte or flash longword must be in the erased state

before being programmed. Cumulative programming of bits

within an EEPROM byte or flash longword is not allowed.

4.5.2.9.1 Erase verify all blocks command

The erase verify all blocks command will verify that all flash and EEPROM blocks have

been erased.

Table 4-20. Erase verify all blocks command FCCOB requirements

CCOBIX[2:0] NVM_FCCOBHI parameters NVM_FCCOBLO parameters

000 0x01 Not required

Upon clearing NVM_FSTAT[CCIF] to launch the erase verify all blocks command, the

memory controller will verify that the entire flash memory space is erased. The

NVM_FSTAT[CCIF] flag will set after the erase verify all blocks operation has

completed. If all blocks are not erased, it means blank check failed and both

NVM_FSTAT[MGSTAT] bits will be set.

Table 4-21. Erase verify all blocks command error handling

NVM_FSTAT

ACCERR Set if CCOBIX[2:0] != 000 at command launch

FPVIOL None

MGSTAT1

Set if any errors have been encountered during the read

or if blank check

failed

MGSTAT0

Set if any non-correctable errors have been encountered during the read

or if blank check failed

1. As found in the memory map for NVM

4.5.2.9.2 Erase verify block command

The erase verify block command allows the user to verify that an entire flash or

EEPROM block has been erased. The FCCOB global address [23:0] bits determine which

block must be verified.

Table 4-22. Erase verify block command FCCOB requirements

CCOBIX[2:0] NVM_FCCOBHI parameters NVM_FCCOBLO parameters

000 0x02 Global address [23:16] to identify Flash block

001 Global address [15:0] in flash block to be verified

Flash and EEPROM

MC9S08PA60 Reference Manual, Rev. 1, 9/2012

92 Freescale Semiconductor, Inc.