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UPD17708 Datasheet(PDF) 274 Page - NEC

No. de pieza UPD17708
Descripción Electrónicos  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
PDF  356 Pages
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Fabricante Electrónico  NEC [NEC]
Página de inicio  http://www.nec.com/
Logo NEC - NEC

UPD17708 Datasheet(HTML) 274 Page - NEC

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µPD17704, 17705, 17707, 17708, 17709
Figure 18-3. Configuration of IF Counter Mode Selection Register
Caution The IF counter and external gate counter functions cannot be used at the same time.
Name
Flag symbol
b3
I
F
C
M
D
1
b2
I
F
C
M
D
0
b1
I
F
C
C
K
1
b0
I
F
C
C
K
0
Address
22H
Read/Write
R/W
IF counter mode selection
Power-ON reset
WDT&SP reset
CE reset
Clock stop
0
1
0
1
0
0
0
0
1 ms
4 ms
8 ms
Open
1 kHz
100 kHz
900 kHz
Setting prohibited
Selects gate time of IF counter and reference frequency of external gate counter
Gate time of IF counter
Reference frequency of
external gate counter
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
1
0
1
External gate counter (FCG)
IF counter (AMIFC pin, AMIF count mode)
IF counter (FMIFC pin, FMIF count mode, 1/2 division)
IF counter (FMIFC pin, AMIF count mode)
Selects function of IF counter or external gate counter
0
0
1
1



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