UPD784938 Datasheet, PDF (404/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

ANI0
ANI1
ANI2
ANI3
ANI4
ANI5
ANI6
ANI7
INTP5
Figure 16-1. A/D Converter Block Diagram
Input
selector
Edge detection
circuit
Sample & hold circuit
Voltage comparator
Successive approximation
register (SAR)
Conversion trigger
Control circuit
INTAD
Trigger enable
A/D converter mode
register (ADM)
RESET
8
A/D conversion result
register (ADCR)
Series resistor string
R/2
AVDD
Connection ^{A/D current cut select}
control
register (IEAD)
AVREF1
R
Tap
selector
R/2
AVSS
8
8
Internal bus