upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 779

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

A/D Converter (ADC)
A/D conversion results
Figure 20-2
The relationship between the analog voltage input to the analog input pins
(ANI0 to ANI11) and the A/D conversion result (of A/D conversion result
register n (ADCR0n)) is as follows:
or
INT( ):
V
AV
ADCR0: Value of A/D conversion result register n (ADCR0n)
Figure 20-2 shows the relationship between the analog input voltage and the
A/D conversion results.
Relationship between analog input voltage and A/D conversion results
Preliminary User’s Manual U17566EE1V2UM00
ADCR0
(
ADCR0 0,5
IN
REF
1,023
1,022
1,021
:
3
2
1
0
:
SAR
=
–
Function that returns the integer of the value in ( )
Analog input voltage
AV
INT
2,048
1
REF
)
(
•
----------------- - 1024
AV
1,024
AV
----------------- -
V
pin voltage
1
1024
REF
IN
REF
2,048
3
•
≤
1,024
V
2
IN
<
2,048
+
5
(
0,5
ADCR0
Input voltage/AV
1,024
)
3
+
0,5
2,043
2,048
)
•
REF
1,022
1,024
AV
----------------- -
1024
REF
2,045
2,048
1,023
1,024
2,047
2,048
ADCR0n
1
FF80H
FF40H
00C0H
0080H
0040H
0000H
FFC0H
Chapter 20
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