Freescale Semiconductor Tower System Eval Kit for MC9S12GN32 TWR-S12GN32-KIT TWR-S12GN32-KIT Hoja De Datos
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TWR-S12GN32-KIT
Analog-to-Digital Converter (ADC12B16CV2)
MC9S12G Family Reference Manual, Rev.1.23
Freescale Semiconductor
569
16.3.2.12.2
Right Justified Result Data (DJM=1)
shows how depending on the A/D resolution the conversion result is transferred to the ATD
result registers for right justified data. Compare is always done using all 12 bits of both the conversion
result and the compare value in ATDDRn.
result and the compare value in ATDDRn.
Module Base +
0x0010 = ATDDR0, 0x0012 = ATDDR1, 0x0014 = ATDDR2, 0x0016 = ATDDR3
0x0018 = ATDDR4, 0x001A = ATDDR5, 0x001C = ATDDR6, 0x001E = ATDDR7
0x0020 = ATDDR8, 0x0022 = ATDDR9, 0x0024 = ATDDR10, 0x0026 = ATDDR11
0x0028 = ATDDR12, 0x002A = ATDDR13, 0x002C = ATDDR14, 0x002E = ATDDR15
0x0010 = ATDDR0, 0x0012 = ATDDR1, 0x0014 = ATDDR2, 0x0016 = ATDDR3
0x0018 = ATDDR4, 0x001A = ATDDR5, 0x001C = ATDDR6, 0x001E = ATDDR7
0x0020 = ATDDR8, 0x0022 = ATDDR9, 0x0024 = ATDDR10, 0x0026 = ATDDR11
0x0028 = ATDDR12, 0x002A = ATDDR13, 0x002C = ATDDR14, 0x002E = ATDDR15
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
0
0
0
Result-Bit[11:0]
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 16-15. Right justified ATD conversion result register (ATDDRn)
Table 16-22. Conversion result mapping to ATDDRn
A/D
resolution
DJM
conversion result mapping to
ATDDRn
8-bit data
1
Result-Bit[7:0] = result,
Result-Bit[11:8]=0000
Result-Bit[11:8]=0000
10-bit data
1
Result-Bit[9:0] = result,
Result-Bit[11:10]=00
Result-Bit[11:10]=00
12-bit data
1
Result-Bit[11:0] = result