參數(shù)資料
型號(hào): μPD78070AY
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機(jī)微控制器(8位單片微控制器)
文件頁數(shù): 20/72頁
文件大?。?/td> 524K
代理商: ΜPD78070AY
μ
PD78070AY
20
5.2
Clock Generator
There are two kinds of clock generators: main system and subsystem clock generators. It is possible to change
the minimum instruction execution time.
0.4
μ
s/0.8
μ
s/1.6
μ
s/3.2
μ
s/6.4
μ
s/12.8
μ
s (at main system clock frequency of 5.0 MHz)
122
μ
s (at subsystem clock frequency of 32.768 kHz)
Figure 5-1. Clock Generator Block Diagram
XT1/P07
XT2
X1
X2
STOP
f
XT
f
XX
Watch Timer, Clock
Output Function
Clock to Peripheral
Hardware
CPU Clock
(f
CPU
)
To INTP0
Sampling Clock
2
f
XX
2
3
f
XX
2
2
f
XX
f
X
f
X
2
Subsystem
Clock
Oscillator
Main System
Clock
Oscillator
Division
Circuit
Prescaler
Standby
Control
Circuit
Wait
Control
Circuit
Prescaler
S
S
f
XT
2
2
4
f
XX
2
1
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