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P912XDP512F0MFVR 数据表(PDF) 179 Page - Freescale Semiconductor, Inc

部件名 P912XDP512F0MFVR
功能描述  Covers, S12XD, S12XB & S12XA Families
PDF  1350 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

P912XDP512F0MFVR 数据表(HTML) 179 Page - Freescale Semiconductor, Inc

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Chapter 5 Analog-to-Digital Converter (S12ATD10B8CV3)
MC9S12XDP512 Data Sheet, Rev. 2.17
Freescale Semiconductor
179
5.3.2.13
ATD Conversion Result Registers (ATDDRx)
The A/D conversion results are stored in 8 read-only result registers. The result data is formatted in the
result registers based on two criteria. First there is left and right justification; this selection is made using
the DJM control bit in ATDCTL5. Second there is signed and unsigned data; this selection is made using
the DSGN control bit in ATDCTL5. Signed data is stored in 2’s complement format and only exists in left
justified format. Signed data selected for right justified format is ignored.
Read: Anytime
Write: Anytime in special mode, unimplemented in normal modes
5.3.2.13.1
Left Justified Result Data
5.3.2.13.2
Right Justified Result Data
76543210
R
R
BIT 9 MSB
BIT 7 MSB
BIT 8
BIT 6
BIT 7
BIT 5
BIT 6
BIT 4
BIT 5
BIT 3
BIT 4
BIT 2
BIT 3
BIT 1
BIT 2
BIT 0
10-bit data
8-bit data
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 5-15. Left Justified, ATD Conversion Result Register, High Byte (ATDDRxH)
76543210
R
R
BIT 1
U
BIT 0
U
0
0
0
0
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 5-16. Left Justified, ATD Conversion Result Register, Low Byte (ATDDRxL)
76543210
R
R
0
0
0
0
0
0
0
0
0
0
0
0
BIT 9 MSB
0
BIT 8
0
10-bit data
8-bit data
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 5-17. Right Justified, ATD Conversion Result Register, High Byte (ATDDRxH)
76543210
R
R
BIT 7
BIT 7 MSB
BIT 6
BIT 6
BIT 5
BIT 5
BIT 4
BIT 4
BIT 3
BIT 3
BIT 2
BIT 2
BIT 1
BIT 1
BIT 0
BIT 0
10-bit data
8-bit data
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 5-18. Right Justified, ATD Conversion Result Register, Low Byte (ATDDRxL)



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