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UPD17708 Datasheet(PDF) 15 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) 15 Page - NEC

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µPD17704, 17705, 17707, 17708, 17709
Pin No.
Symbol
Function
Output Form
74
REG
CPU regulator.
–
Connect this pin to GND via 0.1-
µF capacitor.
76
XOUT
Ground pins of crystal resonator.
–
77
XIN
78
CE
Device operation-selection, CE reset, and interrupt signal input pin.
–
• Device operation-select
When CE is high, PLL frequency synthesizer can operate.
When CE is low, PLL frequency synthesizer is automatically disabled
internally.
• CE reset
When CE goes high, device is reset at rising edge of internal basic timer
setting pulse. This pin also has reset timing delay function.
• Interrupt
Vectored interrupt occurs at falling edge of this pin.
80
RESET
Reset input
–



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