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CHAPTER 13 A/D CONVERTER
User’s Manual U12697EJ3V0UM
Figure 13-1. Block Diagram of A/D Converter
ANI0
ANI1
ANI2
ANI3
ANI4
ANI5
ANI6
ANI7
Selector
A/D converter
mode register (ADM)
Trigger enable
Sample & hold circuit
3
ADCS
Internal bus
Edge
detector
Edge
detector
Controller
AV
DD
Voltage
comparator
Tap selector
INTAD
INTP3
Successive
approximation
register (SAR)
A/D converter input
selection register (ADIS)
ADIS2 ADIS1 ADIS0
INTP3/P03
TRG FR2 FR1 FR0 EGA1 EGA0 ADCE
A / D conversion
result register
(ADCR)
AV
SS
Note
Note
Valid edge specified with bit 3 (EGP3, EGN3) of external interrupt rising edge/falling edge enable registers
0 (EGP0, EGN0) (Refer to
Figure 21-1 Format of External Interrupt Rising Edge Enable Register 0
(EGP0) and External Interrupt Falling Edge Enable Register 0 (EGN0)
).