K60P100M100SF2RM Datasheet, PDF (675/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Chapter 28 Flash Memory Module (FTFL)
Table 28-56. Read 1s All Blocks Command Error Handling (continued)
Error Condition
Read-1s fails
Error Bit
FSTAT[MGSTAT0]
28.4.12.10 Read Once Command
The Read Once command provides read access to a reserved 64-byte field located in the
program flash 0 IFR (see Program Flash IFR Map and Program Once Field). Access to
this field is via 16 records, each 4 bytes long. The Read Once field is programmed using
the Program Once command described in Program Once Command.
Table 28-57. Read Once Command FCCOB Requirements
FCCOB Number
0
1
2
3
4
5
6
7
FCCOB Contents [7:0]
0x41 (RDONCE)
Read Once record index (0x00 - 0x0F)
Not used
Not used
Returned Values
Read Once byte 0 value
Read Once byte 1 value
Read Once byte 2 value
Read Once byte 3 value
After clearing CCIF to launch the Read Once command, a 4-byte Read Once record is
read from the program flash IFR and stored in the FCCOB register. The CCIF flag is set
after the Read Once operation completes. Valid record index values for the Read Once
command range from 0x00 to 0x0F. During execution of the Read Once command, any
attempt to read addresses within the program flash block containing this 64-byte field
returns invalid data. The Read Once command can be executed any number of times.
Table 28-58. Read Once Command Error Handling
Error Condition
Command not available in current mode/security
An invalid record index is supplied
Error Bit
FSTAT[ACCERR]
FSTAT[ACCERR]
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
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