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UPD17708 Datasheet(PDF) 323 Page - NEC

Part # UPD17708
Description  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
PDF  356 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17708 Datasheet(HTML) 323 Page - NEC

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µPD17704, 17705, 17707, 17708, 17709
The WDTRES flag is used to reset the watchdog timer counter.
When this flag is set to 1, the watchdog timer counter is automatically reset.
If the WDTRES flag is set to 1 once within a reference time in which the WDTCK0 and WDTCK1 flags are set, the
reset signal is not output by the watchdog timer.
Figure 21-13. Configuration of Watchdog Timer Counter Reset Register
Name
Flag symbol
b3
W
D
T
R
E
S
b2
0
b1
0
b0
0
Address
03H
Read/Write
W&Reset
Watchdog timer
counter reset
Power-ON reset
WDT&SP reset
CE reset
Clock stop
U
U
U
U
000
0
1
Invalid
Resets watchdog timer counter
Resets watchdog timer counter
Fixed to “0”
U: Undefined



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