Information

28.4.8.3 FTFL Commands by Mode
The following table shows the FTFL commands that can be executed in each flash
operating mode.
Table 28-25. FTFL Commands by Mode
FCMD Command
NVM Normal NVM Special
Unsecure Secure MEEN=10 Unsecure Secure MEEN=10
0x00 Read 1s Block × × × × — —
0x01 Read 1s Section × × × × — —
0x02 Program Check × × × × — —
0x03 Read Resource × × × × — —
0x06 Program Longword × × × × — —
0x08 Erase Flash Block × × × × — —
0x09 Erase Flash Sector × × × × — —
0x0B Program Section × × × × — —
0x40 Read 1s All Blocks × × × × × —
0x41 Read Once × × × × — —
0x43 Program Once × × × × — —
0x44 Erase All Blocks × × × × × —
0x45
Verify Backdoor Access
Key
× × × × — —
28.4.8.4 Allowed Simultaneous Flash Operations
Only the operations marked 'OK' in the following table are permitted to run
simultaneously on the program flash memories. Some operations cannot be executed
simultaneously because certain hardware resources are shared by the memories.
Table 28-26. Allowed Simultaneous Memory Operations
Program Flash 0 Program Flash 1
Read Program Sector Erase Read Program Sector Erase
Program
flash 0
Read — OK OK
Program — OK
Sector Erase — OK
Program
flash 1
Read OK OK —
Program OK —
Sector Erase OK —
Flash Operation in Low-Power Modes
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
624 Freescale Semiconductor, Inc.