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CHAPTER 10 A/D CONVERTER
User’s Manual U15104EJ2V0UD
Figure 10-1. Block Diagram of A/D Converter
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
ANI5/P15
Sample & hold circuit
Voltage comparator
Voltage
comparator
Successive
approximation
register (SAR)
A/D conversion result
register 3 (ADCR3)
Controller
Controller
V
DD
GND
ADCS3
INTAD3
PFEN3
ADCS3
ADS33 ADS32 ADS31 ADS30
0
FR32 FR31 FR30
0
0
0
PFCM3 PFHRM3
Power-fail comparison mode
register 3 (PFM3)
A/D converter mode
register 3 (ADM3)
Analog input channel
specification register 3 (ADS3)
4
Internal bus
Selector
Tap selector
Power-fail comparison threshold
value register 3 (PFT3)
Содержание mPD178053
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