CHAPTER 12 A/D CONVERTER
191
User’s Manual U11302EJ4V0UM
Figure 12-1. A/D Converter Block Diagram
Notes 1.
Selector to select the number of channels to be used for analog input
2.
Selector to select the channel for A/D conversion
Internal bus
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
ANI5/P15
ANI6/P16
ANI7/P17
A/D converter input select register
4
3
ADM1 to ADM3
Sample & hold circuit
Successive
approximation
register (SAR)
Tap selector
Voltage
comparator
AV
REF
AV
SS
AV
DD
Series resistor string
INTP3/P03
Falling edge
detector
FR0 ADM3 ADM2 ADM1
3
CS
TRG
FR1
Trigger
enable
Controller
A/D conversion
result register
(ADCR)
Internal bus
INTAD
INTP3
A/D converter mode register
Note 1
Selector
Note 2
Selector
ADIS3 ADIS2 ADIS1 ADIS0
AV
SS
Содержание mPD780208 Subseries
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