NXP Semiconductors MC9S12G - Page 491

Analog-to-Digital Converter (ADC12B12CV2)
MC9S12G Family Reference Manual Rev.1.27
NXP Semiconductors 493
Table 14-9. Examples of ideal decimal ATD Results
Input Signal
VRL = 0 Volts
VRH = 5.12 Volts
8-Bit
Codes
(resolution=20mV)
10-Bit
Codes
(resolution=5mV)
12-Bit
Codes
(transfer curve has
1.25mV offset)
(resolution=1.25mV)
5.120 Volts
...
0.022
0.020
0.018
0.016
0.014
0.012
0.010
0.008
0.006
0.004
0.003
0.002
0.000
255
...
1
1
1
1
1
1
1
0
0
0
0
0
0
1023
...
4
4
4
3
3
2
2
2
1
1
1
0
0
4095
...
17
16
14
12
11
9
8
6
4
3
2
1
0
Table 14-10. Conversion Sequence Length Coding
S8C S4C S2C S1C
Number of Conversions
per Sequence
0000 12
0001 1
0010 2
0011 3
0100 4
0101 5
0110 6
0111 7
1000 8
1001 9
1010 10
1011 11
1100 12
1101 12
1110 12
1111 12