575
Chapter 14
A/D Converter
User’s Manual U16580EE3V1UD00
(9)
AV
SSn
pin (n = 0, 1)
This is the ground pin of the A/D converter. Always use this pin at the same potential as that of the
EV
SS
pin even when the A/D converter is not used.
(10) AV
DD
pin
This is the analog power supply pin of both A/D converters (ADC0, ADC1).
Figure 14-1:
Block Diagram of A/D Converter (ADCn)
Remarks: 1.
f
XX
: Main clock
2.
n = 0, 1
Cautions: 1. If there is noise at the analog input pins (ANIn0 to ANIn9) or at the reference
voltage input pin (AV
REFn
), that noise may generate an illegal conversion result.
Software processing will be needed to avoid a negative effect on the system from
this illegal conversion result.
An example of this software processing is shown below.
•
Take the average result of a number of A/D conversions and use that as the
A/D conversion result.
•
Execute a number of A/D conversions consecutively and use those results,
omitting any exceptional results that may have been obtained.
2. Do not apply a voltage outside the AV
SSn
to AV
REFn
range to the pins that are
used as A/D converter input pins.
Successive approximation
register (SAR)
Comparator
AV
REFn
AV
DD
AV
SSn
C-Dummy
C-Array
ADCRn9 (ADCRn9H)
ADCRn8 (ADCRn8H)
ADCRn7 (ADCRn7H)
ADCRn6 (ADCRn6H)
ADCRn5 (ADCRn5H)
ADCRn4 (ADCRn4H)
ADCRn2 (ADCRn2H)
ADCRn1 (ADCRn1H)
ADCRn0 (ADCRn0H)
ADDMAn
ADCRn3 (ADCRn3H)
INTADn
ADDMARQn
Controller
f /4
XX
ADTRGn
ANIn0
ANIn1
ANIn2
ANIn3
ANIn4
ANIn5
ANIn6
ANIn7
ANIn8
ANIn9
TR0ADTRG0
Trigger
events
from
TMR0
Trigger
events
from
TMR1
TR1ADTRG0
TR0ADTRG1
TR1ADTRG1
INTTR0OD
INTTR1OD
INTTR0CD
INTTR1CD
Trigger
selector
Edge
detection
Input circuit
Summary of Contents for MuPD70F3187
Page 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Page 16: ...16 User s Manual U16580EE3V1UD00 ...
Page 28: ...28 User s Manual U16580EE3V1UD00 ...
Page 32: ...32 User s Manual U16580EE3V1UD00 ...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Page 1052: ...1052 User s Manual U16580EE3V1UD00 ...
Page 1053: ......