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MC9S12XD64MAA Datasheet, PDF (1254/1348 Pages) Freescale Semiconductor, Inc – ATD Input Enable Register 0 | |||
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Appendix A Electrical Characteristics
A.2.3 ATD Accuracy
A.2.3.1 5-V Range
Table A-15 speciï¬es the ATD conversion performance excluding any errors due to current injection, input
capacitance, and source resistance.
Table A-15. 5-V ATD Conversion Performance
Conditions are shown in Table A-4 unless otherwise noted
VREF = VRHâVRL = 5.12 V. Resulting to one 8-bit count = 20 mV and one 10-bit count = 5 mV
fATDCLK = 2.0 MHz
Num C
Rating
Symbol
Min
Typ
Max
Unit
1 P 10-bit resolution
LSB
â
5
2 P 10-bit differential nonlinearity
DNL
â1
â
3 P 10-bit integral nonlinearity
4 P 10-bit absolute error1
INL
â2.5
±1.5
AE
â3
±2.0
5 P 8-bit resolution
LSB
â
20
6 P 8-bit differential nonlinearity
DNL
â0.5
â
7 P 8-bit integral nonlinearity
INL
â1.0
±0.5
8 P 8-bit absolute error1
AE
â1.5
±1.0
1 These values include the quantization error which is inherently 1/2 count for any A/D converter.
â
mV
1
Counts
2.5 Counts
3
Counts
â
mV
0.5 Counts
1.0 Counts
1.5 Counts
A.2.3.2 3.3-V Range
Table A-16 speciï¬es the ATD conversion performance excluding any errors due to current injection, input
capacitance, and source resistance.
Table A-16. 3.3-V ATD Conversion Performance
Conditions are shown in Table A-4 unless otherwise noted
VREF = VRHâVRL = 3.328 V. Resulting to one 8-bit count = 13mV and one 10-bit count = 3.25 mV
fATDCLK = 2.0 MHz
Num C
Rating
Symbol
Min
Typ
Max
Unit
1 P 10-bit resolution
LSB
â
3.25
2 P 10-bit differential nonlinearity
DNL
â1.5
â
3 P 10-bit integral nonlinearity
4 P 10-bit absolute error1
INL
â3.5
±1.5
AE
â5
±2.5
5 P 8-bit resolution
LSB
â
13
6 P 8-bit differential nonlinearity
DNL
â0.5
â
7 P 8-bit integral nonlinearity
INL
â1.5
±1.0
8 P 8-bit absolute error1
AE
â2.0
±1.5
1 These values include the quantization error which is inherently 1/2 count for any A/D converter.
â
mV
1.5 Counts
3.5 Counts
5
Counts
â
mV
0.5 Counts
1.5 Counts
2.0 Counts
1256
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
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