Information

28.4.12.2 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 phrases to be verified.
Table 28-37. Read 1s Section Command FCCOB Requirements
FCCOB Number FCCOB Contents [7:0]
0 0x01 (RD1SEC)
1 Flash address [23:16] of the first phrase to be verified
2 Flash address [15:8] of the first phrase to be verified
3 Flash address [7:0]
1
of the first phrase to be verified
4 Number of phrases to be verified [15:8]
5 Number of phrases to be verified [7:0]
6 Read-1 Margin Choice
1. Must be phrase aligned (Flash address [2:0] = 000).
Upon clearing CCIF to launch the Read 1s Section command, the FTFL sets the read
margin for 1s according to Table 28-38 and then reads all locations within the specified
section of flash memory. If the FTFL fails to read all 1s (i.e. the flash section is not
erased), the FSTAT(MGSTAT0) bit is set. The CCIF flag sets after the Read 1s Section
operation completes.
Table 28-38. Margin Level Choices for Read 1s Section
Read Margin Choice Margin Level Description
0x00 Use the 'normal' read level for 1s
0x01 Apply the 'User' margin to the normal read-1 level
0x02 Apply the 'Factory' margin to the normal read-1 level
Table 28-39. Read 1s Section Command Error Handling
Error Condition Error Bit
Command not available in current mode/security FSTAT[ACCERR]
An invalid margin code is supplied FSTAT[ACCERR]
An invalid flash address is supplied FSTAT[ACCERR]
Flash address is not phrase aligned FSTAT[ACCERR]
The requested section crosses a Flash block boundary FSTAT[ACCERR]
The requested number of phrases is zero FSTAT[ACCERR]
Read-1s fails FSTAT[MGSTAT0]
Chapter 28 Flash Memory Module (FTFL)
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 647