UPD784938 Datasheet, PDF (419/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 16 A/D CONVERTER
(2) Scan mode A/D conversion operation
When conversion operation is started, an A/D conversion operation is started on the ANI0 pin input. When the A/D
conversion operation ends, an A/D conversion operation is started on the next analog input pin. An A/D conversion
end interrupt request (INTAD) is generated at the end of each A/D conversion operation.
Figure 16-12. Software Start Scan Mode A/D Conversion Operation
A/D conversion
(ANI0 to ANI2
scanned)
ANI0
Conversion start
CS ← 1
TRG ← 0
ANI1
ANI2 ANI0 ANI0
ADM rewrite
CS ← 1
TRG ← 0
ANI1
ANI2
ANI0
ANI1
ADCR
ANI0 ANI1
ANI2
ANI0 ANI1 ANI2 ANI0
INTAD
Interrupt request
acknowledgment
Preliminary User’s Manual U13987EJ1V0UM00
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