mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 521

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

1. Must be 32-bit aligned (Flash address [1:0] = 00).
After clearing CCIF to launch the Read 1s Block command, the FTFL sets the read
margin for 1s according to
program flash or data flash block.
When the data flash is targeted, DEPART must be set for no EEPROM, else the Read 1s
Block command aborts setting the FSTAT[ACCERR] bit. If the FTFL fails to read all 1s
(i.e. the flash block is not fully erased), the FSTAT[MGSTAT0] bit is set. The CCIF flag
sets after the Read 1s Block operation has completed.
23.4.11.2 Read 1s Section Command
The Read 1s Section command checks if a section of program flash or data flash memory
is erased to the specified read margin level. The Read 1s Section command defines the
starting address and the number of longwords to be verified.
Freescale Semiconductor, Inc.
Command not available in current mode/security
An invalid margin choice is specified
Program flash is selected and the address is out of program flash range
Data flash is selected and the address is out of data flash range
Data flash is selected with EEPROM enabled
Flash address is not longword aligned
Read-1s fails
Error Condition
Read Margin Choice
FCCOB Number
Table 23-33. Read 1s Block Command FCCOB Requirements (continued)
0x00
0x01
0x02
3
4
Table 23-35. Read 1s Block Command Error Handling
Table 23-34. Margin Level Choices for Read 1s Block
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Table 23-34
Apply the 'Factory' margin to the normal read-1 level
Apply the 'User' margin to the normal read-1 level
and then reads all locations within the selected
Flash address [7:0]
Preliminary
Use the 'normal' read level for 1s
Margin Level Description
FCCOB Contents [7:0]
Read-1 Margin Choice
1
in the flash block to be verified
Chapter 23 Flash Memory Module (FTFL)
FSTAT[MGSTAT0]
FSTAT[ACCERR]
FSTAT[ACCERR]
FSTAT[ACCERR]
FSTAT[ACCERR]
FSTAT[ACCERR]
FSTAT[ACCERR]
Error Bit
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