S912XEP100J5MAGR Freescale Semiconductor, S912XEP100J5MAGR Datasheet - Page 935
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S912XEP100J5MAGR
Manufacturer Part Number
S912XEP100J5MAGR
Description
S912XEP Series 16 Bit 50 Mhz 1 MB Flash 64 KB Ram Microcontroller - LQFP-144
Manufacturer
Freescale Semiconductor
Datasheet
1.S912XEP100J5MAG.pdf
(1328 pages)
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Once command must not be executed from the Flash block containing the Program Once reserved field to
avoid code runaway.
Upon clearing CCIF to launch the Program Once command, the Memory Controller first verifies that the
selected phrase is erased. If erased, then the selected phrase will be programmed and then verified with
read back. The CCIF flag will remain clear, setting only after the Program Once operation has completed.
The reserved nonvolatile information register accessed by the Program Once command cannot be erased
and any attempt to program one of these phrases a second time will not be allowed. Valid phrase index
values for the Program Once command range from 0x0000 to 0x0007. During execution of the Program
Once command, any attempt to read addresses within P-Flash block 0 will return invalid data.
25.4.2.8
The Erase All Blocks operation will erase the entire P-Flash and D-Flash memory space including the EEE
nonvolatile information register.
Freescale Semiconductor
1. If a Program Once phrase is initially programmed to 0xFFFF_FFFF_FFFF_FFFF, the Program Once command will
be allowed to execute again on that same phrase.
FERSTAT
Register
FSTAT
Erase All Blocks Command
CCOBIX[2:0]
MGSTAT1
MGSTAT0
EPVIOLIF
ACCERR
Table 25-45. Program Once Command FCCOB Requirements
Error Bit
FPVIOL
000
001
010
011
100
101
Table 25-46. Program Once Command Error Handling
MC9S12XE-Family Reference Manual , Rev. 1.23
Set if CCOBIX[2:0] != 101 at command launch
Set if a Load Data Field command sequence is currently active
Set if command not available in current mode (see
Set if an invalid phrase index is supplied
Set if the requested phrase has already been programmed
None
Set if any errors have been encountered during the verify operation
Set if any non-correctable errors have been encountered during the verify
operation
None
Program Once phrase index (0x0000 - 0x0007)
0x07
Program Once word 0 value
Program Once word 1 value
Program Once word 2 value
Program Once word 3 value
FCCOB Parameters
Error Condition
Chapter 25 256 KByte Flash Module (S12XFTM256K2V1)
Not Required
Table
25-30)
(1)
935
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