sc9s12hy64j0vllr Freescale Semiconductor, Inc, sc9s12hy64j0vllr Datasheet - Page 645

• Manufacturer Part Number: sc9s12hy64j0vllr
• Description: S12 Microcontrollers Mcu 16-bit Hcs12 Cisc 32kb Flash 5v Tray
• Manufacturer: Freescale Semiconductor, Inc

17.4.4
Only the operations marked ‘OK’ in
Flash and Data 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 Data Flash, providing read (P-Flash) while
write (D-Flash) functionality.
17.4.5
This section provides details of all available Flash commands launched by a command write sequence. The
ACCERR bit in the FSTAT register will be set during the command write sequence if any of the following
illegal steps are performed, causing the command not to be processed by the Memory Controller:
Freescale Semiconductor
FCMD
•
•
•
0x10
0x11
0x12
Starting any command write sequence that programs or erases Flash memory before initializing the
FCLKDIV register
Writing an invalid command as part of the command write sequence
For additional possible errors, refer to the error handling table provided for each command
Allowed Simultaneous P-Flash and D-Flash Operations
Flash Command Description
Program D-Flash
D-Flash Section
Erase D-Flash
Erase Verify
Command
Sector
Table 17-30. Allowed P-Flash and D-Flash Simultaneous Operations
1
2
3
Program Flash
Margin Read
Sector Erase
Mass Erase
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
The ‘Mass Erase’ operations are commands ‘Erase All Blocks’ and ‘Erase
Flash Block’
Program
Read
Verify that a given number of words starting at the address provided are erased.
Program up to four words in the D-Flash block.
Erase all bytes in a sector of the D-Flash block.
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
3
1
Table 17-29. D-Flash Commands
Table 17-30
Read
Margin
Read
OK
OK
are permitted to be run simultaneously on the Program
2
Section 17.4.5.12
1
Function on D-Flash Memory
Data Flash
Program
OK
and
Sector
Erase
OK
OK
Section
64 KByte Flash Module (S12FTMRC64K1V1)
17.4.5.13.
Erase
Mass
OK
3
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