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64 KByte Flash Module (S12FTMRG64K4KV2)
MC9S12VRP Family Reference Manual Rev. 1.3
NXP Semiconductors
469
18.4.5
Allowed Simultaneous P-Flash and D-Flash Operations
Only the operations marked ‘OK’ in
are permitted to be run simultaneously on the Program
Flash and D-Flash blocks. Some operations cannot be executed simultaneously because certain hardware
resources are shared by the two memories. The priority has been placed on permitting Program Flash reads
while program and erase operations execute on the D-Flash, providing read (P-Flash) while write
(D-Flash) functionality.
0x08
Erase All Blocks
Erase all D-Flash (and P-Flash) blocks.
An erase of all Flash blocks is only possible when the FPLDIS, FPHDIS, and FPOPEN
bits in the FPROT register and the DPOPEN bit in the DFPROT register are set prior to
launching the command.
0x09
Erase Flash Block
Erase a D-Flash (or P-Flash) block.
An erase of the full D-Flash block is only possible when DPOPEN bit in the DFPROT
register is set prior to launching the command.
0x0B
Unsecure Flash
Supports a method of releasing MCU security by erasing all D-Flash (and P-Flash) blocks
and verifying that all D-Flash (and P-Flash) blocks are erased.
0x0D
Set User Margin
Level
Specifies a user margin read level for the D-Flash block.
0x0E
Set Field Margin
Level
Specifies a field margin read level for the D-Flash block (special modes only).
0x10
Erase Verify
D-Flash Section
Verify that a given number of words starting at the address provided are erased.
0x11
Program D-Flash
Program up to four words in the D-Flash block.
0x12
Erase D-Flash
Sector
Erase all bytes in a sector of the D-Flash block.
Table 18-30. Allowed P-Flash and D-Flash Simultaneous Operations
D-Flash
Program Flash
Read
Margin
Read
Program
Sector
Erase
Mass
Erase
2
Read
OK
OK
OK
Margin Read
1
1
A ‘Margin Read’ is any read after executing the margin setting commands
‘Set User Margin Level’ or ‘Set Field Margin Level’ with anything but the
‘normal’ level specified. See the Note on margin settings in
.
Program
Sector Erase
Mass Erase
2
2
The ‘Mass Erase’ operations are commands ‘Erase All Blocks’ and ‘Erase
Flash Block’
OK
Table 18-29. D-Flash Commands
FCMD
Command
Function on D-Flash Memory
Summary of Contents for MC9S12VRP64
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