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M30620FCAFP Datasheet(PDF) 451 Page - Renesas Technology Corp

Part # M30620FCAFP
Description  16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES
PDF  615 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M30620FCAFP Datasheet(HTML) 451 Page - Renesas Technology Corp

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A-D Converter
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
2-134
Figure 2.7.23. Theoretical A-D conversion characteristics (10-bit mode)
Table 2.7.11. Variation of the successive comparison register and Vref while A-D conversion is in
progress (10-bit mode)
00016
00116
00216
00316
3FE16
3FF16
Result of A-D conversion
Analog input voltage
VREF
1024
x 1
VREF
1024
x 2
VREF
1024
x 3
x 1021
VREF
1024
VREF
1024
x 1022
VREF
1024
x 1023
VREF
VREF
1024
x 0.5
Theoretical A-D
conversion characteristic
Ideal A-D conversion
characteristic
0
1
1
n9
0 0 0000 000
0 0 0000 000
1 0 0000 000
n9 n8 10000 000
n9 n8 n7 n6 n5 n4 n3 n2 n1 0
n9 n8 n7 n6 n5 n4 n3 n2 n1 n0
b9
b0
1st comparison result
2nd comparison result
Successive approximation register
Vref change
A-D converter stopped
1st comparison
2nd comparison
3rd comparison
10th comparison
Conversion complete
VREF
±
±
2
VREF
4
VREF
8
VREF
± ...... ±
VREF
1024
–
2048
VREF
[V]
2
[V]
–
2
VREF
2048
VREF
[V]
±
±
2
VREF
4
VREF
8
VREF
–
2048
VREF
[V]
4
n9 = 1
+
n9 = 0
–
n8 = 1
+
8
VREF
n8 = 0
–
±
2
VREF
4
VREF
–
2048
VREF
[V]
4
VREF
VREF
8
VREF
This data transfers to the bit 0
to bit 9 of A-D register i.



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