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UPD78014 Datasheet(PDF) 17 Page - NEC

Part # UPD78014
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  62 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD78014 Datasheet(HTML) 17 Page - NEC

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µPD78001B(A), 78002B(A)
17
5.2
CLOCK GENERATOR
There are two types of clock generator: main system clock and subsystem clock.
The instruction exection time can be changed.
• 0.4
µs/0.8 µs/1.6 µs/3.2 µs/6.4 µs (mainsystem clock: at 10.0 MHz operation)
• 122
µs (subsystem clock: at 32.768 KHz operation)
Fig. 5-1 Clock Generator Block Diagram
XT1/P04
XT2
X1
X2
fX
fXT
STOP
fX
2
fX
2 2
fX
2 3
fX
2 4
Subsystem
Clock
Osicillator
Main
System
Clock
Osicillator
Prescaler
Prescaler
Selector
Standby
Control
Circuit
Wait
Control
Circuit
INTP0
Sampling Clock
CPU Clock
(fCPU)
Clock to
Peripheral
Hardware
Watch Timer
Clock Output
Function



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