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PC912XDP512F0MPVR 데이터시트(PDF) 576 Page - Freescale Semiconductor, Inc

부품명 PC912XDP512F0MPVR
상세설명  HCS12X Microcontrollers
PDF  1348 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PC912XDP512F0MPVR 데이터시트(HTML) 576 Page - Freescale Semiconductor, Inc

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Chapter 15 Background Debug Module (S12XBDMV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
576
Freescale Semiconductor
15.3.2.2
BDM CCR LOW Holding Register (BDMCCRL)
Figure 15-4. BDM CCR LOW Holding Register (BDMCCRL)
Read: All modes through BDM operation when not secured
Write: All modes through BDM operation when not secured
NOTE
When BDM is made active, the CPU stores the content of its CCRL register
in the BDMCCRL register. However, out of special single-chip reset, the
BDMCCRL is set to 0xD8 and not 0xD0 which is the reset value of the
CCRL register in this CPU mode. Out of reset in all other modes the
BDMCCRL register is read zero.
When entering background debug mode, the BDM CCR LOW holding register is used to save the low byte
of the condition code register of the user’s program. It is also used for temporary storage in the standard
BDM firmware mode. The BDM CCR LOW holding register can be written to modify the CCR value.
Table 15-3. BDM Clock Sources
PLLSEL
CLKSW
BDMCLK
0
0
Bus clock dependent on oscillator
0
1
Bus clock dependent on oscillator
1
0
Alternate clock (refer to the device specification to determine the alternate clock source)
1
1
Bus clock dependent on the PLL
Register Global Address 0x7FFF06
7
6
5
4
3
2
1
0
R
CCR7
CCR6
CCR5
CCR4
CCR3
CCR2
CCR1
CCR0
W
Reset
Special Single-Chip Mode
1
1
0
0
1
0
0
0
All Other Modes
0
0
0
0
0
0
0
0



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