AT90S/LS2333 and AT90S/LS4433
54
Figure 46. ADC Timing Diagram, First Conversion (Single Conversion Mode)
Figure 47. ADC Timing Diagram, Single Conversion
Table 21. ADC Conversion Time
Condition
Sample Cycle Number
Result Ready (cycle
number)
Total Conversion Time
(cycles)
Total Conversion Time
(
µ
s)
1st Conversion, Free Run
14
25
25
125 - 500
1st Conversion, Single
14
25
26
130 - 520
Free Run Conversion
2
13
13
65 - 260
Single Conversion
2
13
14
70 - 280
MSB of result
LSB of result
ADC clock
ADSC
Hold strobe
ADIF
ADCH
ADCL
Cycle number
ADEN
1
2
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
Dummy Conversion
Actual Conversion
Second
Conversion
1
2
3
4
5
6
7
8
9
10
11
12
13
MSB of result
LSB of result
ADC clock
ADSC
Hold strobe
ADIF
ADCH
ADCL
Cycle number
14
1
2
One Conversion
Next Conversion