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CHAPTER 12 A/D CONVERTER
Preliminary User’s Manual U14581EJ3V0UM00
Figure 12-1. A/D Converter Block Diagram
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
Selector
Sample & hold circuit
Voltage comparator
Successive
approximation
register (SAR)
Controller
3
A/D conversion result
register (ADCR1)
Tap selector
AV
REF
AV
SS
INTAD
A/D converter mode
register (ADM1)
Analog input channel
specification register (ADS1)
Internal bus
ADS12 ADS11 ADS10
ADCS1 FR12 FR11 FR10
Series resistor string
Figure 12-2. Power-Fail Detection Function Block Diagram
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
Multiplexer
Selector
A/D converter
Internal bus
Power-fail compare
mode register (PFM)
Comparator
PFEN PFCM
Power-fail compare
threshold value
register (PFT)
INTAD
PFEN
PFCM
Содержание mPD780852 Series
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