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參數(shù)資料
| 型號： | MC68HC05K3CSD |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDSO16 |
| 封裝： | SSOP-16 |
| 文件頁數(shù)： | 49/132頁 |
| 文件大?。?/td> | 2612K |
| 代理商： | MC68HC05K3CSD |
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General Description
Functional Pin Description
MC68HC05K3 — Rev. 5
Technical Data
General Description
1.7.2 OSC1 and OSC2
The OSC1 and OSC2 pins are the connections for the 2-pin on-chip
oscillator. The OSC1 and OSC2 pins also can be used in conjunction
with the PB1/OSC3 pin to create a more stable 3-pin RC oscillator.
The OSC1, OSC2, and PB1/OSC3 pins can accept these sets of
components:
1. A crystal, as shown in Figure 1-5(a)
2. A ceramic resonator, as shown in Figure 1-5(a)
3. An external resistor and capacitor using two pins, as shown in
4. An external resistor and capacitor using three pins, as shown in
5. An external clock signal, as shown in Figure 1-5(d)
The frequency, fOSC, of the oscillator or external clock source is divided
by two to produce the internal operating frequency, fOP. The oscillator
type is selected by two mask options.
1.7.2.1 2-Pin Crystal Oscillator
The circuit in Figure 1-5(a) shows a typical 2-pin oscillator circuit for an
AT-cut, parallel resonant crystal. The crystal manufacturer’s
recommendations should be followed, since the crystal parameters
determine the external component values required to provide maximum
stability and reliable startup. The load capacitance values used in the
oscillator circuit design should include all stray capacitances. The crystal
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
when the crystal/ceramic resonator oscillator option is used.
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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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