参数资料
型号: MC68HC05J1AVDWR2
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封装: SOIC-20
文件页数: 42/126页
文件大小: 1118K
代理商: MC68HC05J1AVDWR2
Technical Data
MC68HC05J1A — Rev. 1.0
22
General Description
MOTOROLA
General Description
1.6.2.2 Ceramic Resonator
To reduce cost, use a ceramic resonator in place of the crystal. Use the
circuit in Figure 1-6 or Figure 1-7 for a ceramic resonator and follow the
resonator manufacturer’s recommendations. The load capacitance
values used in the oscillator circuit design should include all stray layout
capacitances. To minimize output distortion, mount the resonator as
close as possible to the pins.
Figure 1-6. Ceramic Resonator Connections
with Feedback Resistor Mask Option
Figure 1-7. Ceramic Resonator Connections
without Feedback Resistor Mask Option
MCU
VDD
VSS
C1
C2
OSC1
OSC2
CERAMIC
C4
C3
OSC1
OSC2
CERAMIC
C3
27 pF
C4
27 pF
RESONA
T
O
R
VSS
RESONATOR
MCU
VDD
VSS
C1
C2
OSC1
OSC2
R
CERAMIC
C4
C3
OSC1
OSC2
R
10 M
CERAMIC
C3
27 pF
C4
27 pF
RESONA
T
O
R
VSS
RESONATOR
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