參數(shù)資料
型號(hào): μPD78012F
廠(chǎng)商: NEC Corp.
元件分類(lèi): 8位微控制器
英文描述: 8 Bit Single Chip Microcontrollers
中文描述: 8位單片機(jī)微控制器
文件頁(yè)數(shù): 20/74頁(yè)
文件大?。?/td> 567K
代理商: ΜPD78012F
20
μ
PD78011F, 78012F, 78013F, 78014F, 78015F, 78016F, 78018F
5.2 CLOCK GENERATOR
There are two types of clock generator: main system clock and subsystem clock.
The minimum instruction exection time can be changed.
Figure 5-1. Clock Generator Block Diagram
Prescaler
Prescaler
XT1/P04
XT2
X1
X2
STOP
f
X
2
3
f
X
2
4
f
X
2
2
f
X
2
f
X
f
XT
Clock to
Peripheral
Hardware
Subsystem
Clock
Oscillator
Main
System
Clock
Oscillator
Standby
Control
Circuit
Wait
Control
Circuit
CPU Clock
(f
CPU
)
INTP0
Sampling Clock
0.4
μ
s/0.8
μ
s/1.6
μ
s/3.2
μ
s/6.4
μ
s (Main system clock: at 10.0 MHz operation)
122
μ
s (Subsystem clock: at 32.768 KHz operation)
Watch Timer
Clock Output
Function
Selector
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