M16C29_07 Datasheet, PDF (14/17 Pages) Renesas Technology Corp – Standard Characteristics

A/D conversion accuracy standard characteristics example-5
M16C/29 Group Standard Characteristics
M30290FxHP(x=A,C),M30291FxHP(x=A,C),
M30290FxTHP(x=A,C),M30291FxTHP(x=A,C),
M30290FxVHP(x=A,C),M30291FxVHP(x=A,C)
A/D CONVERTER STEP WIDTH MEASUREMENT
• Vcc = 3.3[V]
• VREF =3.3[V]
• OCO
• 1LSB Width =3.3[V] / 256 = 12.9[mV]
• Temp. = 25[°C]
• CPU mode =1MHz
• A/D conversion clock =1MHz
3.0
2.5
2.0
1.5
1LSB Width
1.0
0.5
0.0
-0.5
Error
-1.0
-1.5
-2.0
-2.5
-3.0
0
16
32
48
64
80
Conversion value
• A/D conversion mode = 8bit
1LSB Width
Error
96
112
128
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
128
144
160
176
192
208
224
240
256
Conversion value
Fig. 27. A/D conversion accuracy standard characteristics example-5
REJ99B1342-0100
©2007. Renesas Technology Corp., All rights reserved.
2007.06
Page 14 of 17