UPD784938 Datasheet, PDF (408/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 16 A/D CONVERTER
Figure 16-3. A/D Converter Mode Register (ADM) Format
7
ADM CS
6
5
4
3
2
1
0
TRG SCMD FR ANIS2 ANIS1 ANIS0 MS
Address After reset R/W
0FF68H 00H R/W
ANIS2 ANIS1 ANIS0 MS A/D Conversion Operating Mode Setting
0
0
0
0 Scan ANI0 input scanned
mode
0
0
1
0 _(0/1) Input ANI0 & ANI1 scanned
0
1
0
0
Input ANI0 to ANI2 scanned
0
1
1
0
Input ANI0 to ANI3 scanned
1
0
0
0
Input ANI0 to ANI4 scanned
1
0
1
0
Input ANI0 to ANI5 scanned
1
1
0
0
Input ANI0 to ANI6 scanned
1
1
1
0
Input ANI0 to ANI7 scanned
0
0
0
1 Select ANI0 input selected
mode
0
0
1
1
ANI1 input selected
0
1
0
1
ANI2 input selected
0
1
1
1
ANI3 input selected
1
0
0
1
ANI4 input selected
1
0
1
1
ANI5 input selected
1
1
0
1
ANI6 input selected
1
1
1
1
ANI7 input selected
FR
Conversion Speed Control (fCLK = 12.58 MHz)
0 180/fCLK (19.1 µ s)
Low-speed conversion
1 120/fCLK (9.6 µ s)
High-speed conversion
SCMD MS
Scan Mode Selection
0
0 Scan mode 0 (no delay control)
1
0 Scan mode 1 (delay control)
0
1 Select mode
1
1 Setting prohibited
TRG
External Trigger Control
0 External trigger disabled
1 External trigger enabled
CS
A/D Conversion Operation Control
0 Stop A/D conversion operation
1 Start A/D conversion operation
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Preliminary User’s Manual U13987EJ1V0UM00