MC9S12C Datasheet, PDF (651/680 Pages) Motorola, Inc – 16-Bit Microcontroller

Appendix A Electrical Characteristics
A.2.5 ATD Accuracy (3.3V Range)
Table A-13 specifies the ATD conversion performance excluding any errors due to current injection, input
capacitance and source resistance.
Table A-13. ATD Conversion Performance
Conditions are shown in Table A-4 unless otherwise noted
V_REF = V_RH - V_RL = 3.328V. Resulting to one 8 bit count = 13mV and one 10 bit count = 3.25mV
f_ATDCLK = 2.0MHz
Num C
Rating
Symbol
Min
Typ
1
P 10-Bit Resolution
LSB
—
3.25
2
P 10-Bit Differential Nonlinearity
DNL
–1.5
—
3
P 10-Bit Integral Nonlinearity
4
P 10-Bit Absolute Error⁽¹⁾
INL
–3.5
±1.5
AE
–5
±2.5
5
P 8-Bit Resolution
LSB
—
13
6
P 8-Bit Differential Nonlinearity
DNL
–0.5
—
7
P 8-Bit Integral Nonlinearity
INL
–1.5
±1
8
P 8-Bit Absolute Error¹
AE
–2.0
±1.5
1. These values include the quantization error which is inherently 1/2 count for any A/D converter.
Max
Unit
—
mV
1.5
Counts
3.5
Counts
5
Counts
—
mV
0.5
Counts
1.5
Counts
2.0
Counts
For the following definitions see also Figure A-1.
Differential Non-Linearity (DNL) is defined as the difference between two adjacent switching steps.
DNL(i) = ^V-----ⁱ--₁-^–--_L---^V-_S---^iB---^–-----¹- – 1
The Integral Non-Linearity (INL) is defined as the sum of all DNLs:
n
∑ ^{INL(n) =}
DNL(i) = ^V----₁-ⁿ--_L---^–-_S---^VB-----⁰- – n
i=1
Freescale Semiconductor
MC9S12C-Family / MC9S12GC-Family
651
Rev 01.23