參數(shù)資料
型號: UPD78054Y
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8-bit single-chip microcontroller
中文描述: 8位單片機(jī)
文件頁數(shù): 17/62頁
文件大小: 576K
代理商: UPD78054Y
μ
PD78001B(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
μ
s/0.8
μ
s/1.6
μ
s/3.2
μ
s/6.4
μ
s (mainsystem clock: at 10.0 MHz operation)
122
μ
s (subsystem clock: at 32.768 KHz operation)
Fig. 5-1 Clock Generator Block Diagram
XT1/P04
XT2
X1
X2
f
X
f
XT
STOP
f
X
2
f
X
2
2
f
X
2
3
f
X
2
4
Subsystem
Clock
Osicillator
Main
System
Clock
Osicillator
Prescaler
Prescaler
Selector
Standby
Control
Circuit
Wait
Control
Circuit
INTP0
Sampling Clock
CPU Clock
(f
CPU
)
Clock to
Peripheral
Hardware
Watch Timer
Clock Output
Function
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