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UPD17708 データシート(PDF) 197 Page - NEC

部品番号 UPD17708
部品情報  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
PDF  356 Pages
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メーカー  NEC [NEC]
ホームページ  http://www.nec.com/
Logo NEC - NEC

UPD17708 データシート(HTML) 197 Page - NEC

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µPD17704, 17705, 17707, 17708, 17709
Figure 14-5. Configuration of A/D Converter Mode Selection Register
Notes 1. A/D conversion under execution is stopped if “0” is written to this bit.
2. A/D operation is started in the hardware mode when “1” is written to this bit. In the software mode,
operation is started as soon as data has been written (by the PUT instruction) to the A/D converter
reference voltage setting register (ADCR).
Name
Flag symbol
b3
0
b2
A
D
C
M
D
b1
A
D
C
S
T
T
b0
A
D
C
C
M
P
Address
25H
Read/Write
R/W
A/D converter mode selection
Power-ON reser
WDT&SP reser
CE reser
Clock stop
R:Retained
0
1
0
0
0
R
VADCIN < VADCREF
VADCIN > VADCREF
Detects result of comparison by A/D converter
00
0
R
R
End of conversion
Conversion in progress
Software modeNote 1
Hardware modeNote 2
Detects operating status of A/D converter in hardware mode
0
1
0
0
0
0
Selects compare mode of A/D converter and starts or stops A/D converter
0
1
Fixed to “0”



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