M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 562

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

560
Remark
The relationship between the analog voltage input to the analog input pin (ANI2n) and the A/D conversion
result (of A/D2 conversion result register n (ADA2CRn)) is as follows (when 10-bit resolution setting):
or,
The relationship between the analog input voltage and the A/D conversion results is shown below.
SAR = INT (
ADCR
results (ADA2CRn)
(SAR − 0.5) ×
INT( ): Function that returns the integer of the value in ( )
V
AV
ADCR: Value of A/D2 conversion result register n (ADA2CRn)
Note The lower 5 bits of the ADA2CRn register are fixed to 0.
Figure 13-3. Relationship Between Analog Input Voltage and A/D Conversion Results
A/D conversion
n = 0 to 7
IN
:
DD
Note
:
= SAR × 64
Analog input voltage
AV
DD
AV
V
1,024
pin voltage
AV
IN
DD
1,023
1,022
1,021
DD
× 1,024 + 0.5)
SAR
≤ V
3
2
1
0
IN
2,048
< (SAR + 0.5) ×
1
(When 10-Bit Resolution Setting)
CHAPTER 13 A/D CONVERTER 2
1,024
1
User’s Manual U16543EJ4V0UD
2,048
3
1,024
2
1,024
AV
2,048
DD
5
Input voltage/AV
1,024
3
2,043
2,048
1,022
1,024
DD
2,045
2,048
1,023
1,024
2,047
2,048
ADA2CRn
1
FFC0H
FF80H
FF40H
00C0H
0080H
0040H
0000H