UPD78361A Datasheet, PDF (38/88 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLER

µPD78361A, 78362A
3.8 A/D CONVERTER
The µPD78362A contains a high-speed, high-resolution 10-bit analog-to-digital (A/D) converter (conversion
time 12.6µs at an internal clock frequency of 16 MHz). Successive approximation type is adopted. This
converter is provided with eight analog input lines (ANI0-ANI7) and can perform various operations as the
application requires, in select, scan, and mixed modes.
When A/D conversion ends, an internal interrupt (INTAD) occurs. This interrupt can start a macro service
that executes automatic data transfer through hardware.
Figure 3-14. Block Diagram of A/D Converter
ANI0
ANI1
ANI2
ANI3
ANI4
ANI5
ANI6
ANI7
INTCM03
INTP2
(Start trigger)
Controller
ADM (8)
8
Sample & hold
Resistor
string
9
9
Internal bus
Comparator
0
SAR (10)
10
10
0
ADCR0
ADCR1
ADCR2
ADCR3
ADCR4
ADCR5
ADCR6
ADCR7
10
AV DD
AV REF
AVSS
38