参数资料
型号: MC68HC05K3CP
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP16
封装: PLASTIC, DIP-16
文件页数: 50/132页
文件大小: 2612K
代理商: MC68HC05K3CP
Technical Data
MC68HC05K3 — Rev. 5
General Description
General Description
Figure 1-5. Oscillator Connections
1.7.2.2 2-Pin Ceramic Resonator Oscillator
In cost-sensitive applications, a ceramic resonator can be used instead
of the crystal. The circuit in Figure 1-5(a) is designed for either a crystal
or a ceramic resonator. The resonator manufacturer’s recommendations
should be followed, since 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. The ceramic resonator and
components should be mounted as close as possible to the pins for
startup stabilization and to minimize output distortion. An internal startup
resistor of approximately 2 M
is provided between OSC1 and OSC2 for
the crystal/ceramic resonator oscillator mask option.
MCU
36
(a) 2-Pin Crystal or
Ceramic Resonator
Connections
OSC1
OSC2
36 pF*
2 M
(MASK OPTION)
R
UNCONNECTED
EXTERNAL CLOCK
R
C
(b) 2-Pin
RC Oscillator
Connections
(d) External
Clock Source
Connection
(c) 3-Pin
RC Oscillator
Connections
C
OSC1
OSC2
MCU
OSC1
OSC2
MCU
OSC1
OSC2
MCU
PB1/OSC3
* Starting value only. Follow crystal
supplier’s recommendations
regarding component values that
will provide reliable startup and
maximum stability.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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.
ARCHIVED
BY
FREESCALE
SEMICONDUCT
OR,
INC.
2006
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