參數(shù)資料
型號: m789436
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8-Bit Single-Chip Microcontrollers
中文描述: 8位單芯片微控制器
文件頁數(shù): 11/144頁
文件大小: 1378K
代理商: M789436
CHAPTER 5 CLOCK GENERATOR
108
User’s Manual U15075EJ1V0UM00
5.4 System Clock Oscillators
5.4.1 Main system clock oscillator
The main system clock oscillator is oscillated by the crystal or ceramic resonator (5.0 MHz TYP.) connected
across the X1 and X2 pins.
An external clock can also be input to the circuit. In this case, input the clock signal to the X1 pin, and input the
inverted signal to the X2 pin.
Figure 5-5 shows the external circuit of the main system clock oscillator.
Figure 5-5. External Circuit of Main System Clock Oscillator
(a) Crystal or ceramic oscillation
(b) External clock
Crystal
or
ceramic resonator
VSS
X2
X1
External
clock
X1
X2
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