參數(shù)資料
型號: MC68HC705J1ADWR2
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封裝: SOIC-20
文件頁數(shù): 82/162頁
文件大?。?/td> 1517K
代理商: MC68HC705J1ADWR2
Technical Data
MC68HC705J1A — Rev. 3.0
26
General Description
MOTOROLA
General Description
Figure 1-4. Crystal Connections with
Oscillator Internal Resistor Mask Option
Figure 1-5. Crystal Connections without
Oscillator Internal Resistor Mask Option
1.5.2.2 Ceramic Resonator Oscillator
To reduce cost, use a ceramic resonator instead of the crystal. The
circuits shown in Figure 1-6 and Figure 1-7 show ceramic resonator
circuits. Follow the resonator manufacturer’s recommendations, as the
resonator parameters determine the external component values
required for maximum stability and reliable starting. The load
capacitance values used in the oscillator circuit design should include all
stray capacitances.
MCU
C1
C2
XTAL
C4
C3
XTAL
C3
27 pF
C4
27 pF
OSC1
OSC2
OSC1
OSC2
VSS
VDD
VSS
MCU
C1
C2
R
XTAL
C4
C3
R
10 M
XTAL
C3
27 pF
C4
27 pF
OSC1
OSC2
VDD
VSS
OSC1
OSC2
VSS
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