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UPD17708 Datasheet(PDF) 179 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/
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UPD17708 Datasheet(HTML) 179 Page - NEC

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µPD17704, 17705, 17707, 17708, 17709
13.5 Timer 2
13.5.1 Outline of timer 2
Figure 13-21 outlines timer 2.
Timer 2 counts the basic clock (100, 10, 2, or 1 kHz) with an 8-bit counter, and compares the count value
with a value set in advance.
Figure 13-21. Outline of Timer 2
Remarks 1. TM2CK1 and TM2CK0 (bits 1 and 0 of timer 2 counter clock selection register: refer to Figure
13-22) set the basic clock frequency.
2. TM2EN (bit 3 of timer 2 counter clock selection register: refer to Figure 13-22) starts or stops
timer 2.
3. TM2RES (bit 2 of timer 2 counter clock selection register: refer to Figure 13-22) resets timer
2 counter.
Clock selection
4.5 MHz
Start/stop
Timer 2 counter (TM2C)
TM2CK1 flag
TM2CK0 flag
TM2EN flag
Coincidence detection circuit
TM2RES flag
DBF
Timer 2
IRQTM2 flag
Interrupt control
DBF
Timer 2 modulo register
(TM2M)



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