Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256 用户手册
产品代码
DEMO9S12XHY256
256 KByte Flash Module (S12XFTMR256K1V1)
MC9S12XHY-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
599
18.4.1.5
D-Flash Commands
summarizes the valid D-Flash commands along with the effects of the commands on the
D-Flash block.
Table 18-28. P-Flash Commands
FCMD
Command
Function on P-Flash Memory
0x01
Erase Verify All
Blocks
Verify that all P-Flash (and D-Flash) blocks are erased.
0x02
Erase Verify Block
Verify that a P-Flash block is erased.
0x03
Erase Verify
P-Flash Section
Verify that a given number of words starting at the address provided are erased.
0x04
Read Once
Read a dedicated 64 byte field in the nonvolatile information register in P-Flash block 0
that was previously programmed using the Program Once command.
that was previously programmed using the Program Once command.
0x06
Program P-Flash
Program a phrase in a P-Flash block.
0x07
Program Once
Program a dedicated 64 byte field in the nonvolatile information register in P-Flash block
0 that is allowed to be programmed only once.
0 that is allowed to be programmed only once.
0x08
Erase All Blocks
Erase all P-Flash (and D-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.
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 P-Flash (or D-Flash) block.
An erase of the full P-Flash block is only possible when FPLDIS, FPHDIS and FPOPEN
bits in the FPROT register are set prior to launching the command.
An erase of the full P-Flash block is only possible when FPLDIS, FPHDIS and FPOPEN
bits in the FPROT register are set prior to launching the command.
0x0A
Erase P-Flash
Sector
Erase all bytes in a P-Flash sector.
0x0B
Unsecure Flash
Supports a method of releasing MCU security by erasing all P-Flash (and D-Flash) blocks
and verifying that all P-Flash (and D-Flash) blocks are erased.
and verifying that all P-Flash (and D-Flash) blocks are erased.
0x0C
Verify Backdoor
Access Key
Supports a method of releasing MCU security by verifying a set of security keys.
0x0D
Set User Margin
Level
Specifies a user margin read level for all P-Flash blocks.
0x0E
Set Field Margin
Level
Specifies a field margin read level for all P-Flash blocks (special modes only).
Table 18-29. D-Flash Commands
FCMD
Command
Function on D-Flash Memory
0x01
Erase Verify All
Blocks
Verify that all D-Flash (and P-Flash) blocks are erased.
0x02
Erase Verify Block
Verify that the D-Flash block is erased.
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.
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.
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.