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UPD17708 Scheda tecnica(PDF) 290 Page - NEC

Il numero della parte UPD17708
Spiegazioni elettronici  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
PDF  356 Pages
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Produttore elettronici  NEC [NEC]
Homepage  http://www.nec.com/
Logo NEC - NEC

UPD17708 Scheda tecnica(HTML) 290 Page - NEC

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19.3 Clock Selection Block and Clock Generation Block
The clock selection block selects the output frequency of BEEP1 and BEEP0 by using the BEEP clock selection
register.
The clock generation block generates the clock to be output to BEEP0 and BEEP1.
The clock frequency generated is 1 kHz, 3 kHz, 4 kHz, 6.7 kHz, 67 Hz, or 200 Hz.
Figure 19-4. Configuration of BEEP Clock Selection Register
Name
Flag symbol
b3
B
E
E
P
1
C
K
1
b2
B
E
E
P
1
C
K
0
b1
B
E
E
P
0
C
K
1
b0
B
E
E
P
0
C
K
0
Address
14H
Read/Write
R/W
BEEP clock selection
Power-ON reset
WDT&SP reset
CE reset
Clock stop
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
1 kHz
3 kHz
4 kHz
6.7 kHz
Sets output frequency of BEEP0
4 kHz
3 kHz
200 Hz
67 Hz
Sets output frequency of BEEP1
0
0
1
1
0
1
0
1
0
0
1
1



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