參數(shù)資料
型號: MC9S12XF512J0VLHR
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, QFP64
封裝: LQFP-64
文件頁數(shù): 629/1306頁
文件大小: 8007K
代理商: MC9S12XF512J0VLHR
Chapter 10 128 KByte Flash Module (S12XFTM128K2XFV1)
MC9S12XF - Family Reference Manual, Rev.1.19
Freescale Semiconductor
389
Valid margin level settings for the Set User Margin Level command are dened in Table 10-56.
NOTE
User margin levels can be used to check that Flash memory contents have
adequate margin for normal level read operations. If unexpected results are
encountered when checking Flash memory contents at user margin levels, a
potential loss of information has been detected.
10.4.2.13 Set Field Margin Level Command
The Set Field Margin Level command, valid in special modes only, causes the Memory Controller to set
the margin level specified for future read operations of a specific P-Flash or D-Flash block.
Table 10-56. Valid Set User Margin Level Settings
CCOB
(CCOBIX=001)
Level Description
0x0000
Return to Normal Level
0x0001
User Margin-1 Level(1)
1. Read margin to the erased state
0x0002
User Margin-0 Level(2)
2. Read margin to the programmed state
Table 10-57. Set User Margin Level Command Error Handling
Register
Error Bit
Error Condition
FSTAT
ACCERR
Set if CCOBIX[2:0] != 001 at command launch
Set if command not available in current mode (see Table 10-30)
Set if an invalid global address [22:16] is supplied(1)
1. As dened by the memory map for FTM512K3.
Set if an invalid margin level setting is supplied
FPVIOL
None
MGSTAT1
None
MGSTAT0
None
FERSTAT
EPVIOLIF
None
Table 10-58. Set Field Margin Level Command FCCOB Requirements
CCOBIX[2:0]
FCCOB Parameters
000
0x0E
Global address [22:16] to identify the Flash
block
001
Margin level setting
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