参数资料
型号: MCC68HC711D3
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, UUC
封装: DIE
文件页数: 67/157页
文件大小: 2252K
代理商: MCC68HC711D3
General Description
Crystal Driver and External Clock Input (XTAL and EXTAL)
MC68HC711D3 — Rev. 2
Data Sheet
MOTOROLA
General Description
17
1.7 Crystal Driver and External Clock Input (XTAL and EXTAL)
These two pins provide the interface for either a crystal or a CMOS compatible
clock to control the internal clock generator circuitry. The frequency applied to
these pins is four times higher than the desired E-clock rate. Refer to Figure 1-5
for crystal and clock connections.
Figure 1-5. Oscillator Connections
10 M
* Values includes all stray capacitances.
FIRST MCU
EXTAL
XTAL
4 x E
CRYSTAL
MCU
EXTAL
XTAL
4 x E
CMOS-COMPATIBLE
EXTERNAL OSCILLATOR
NC OR
10K–100K
LOAD
25 pF *
SECOND MCU
EXTAL
XTAL
NC OR
10K–100K
LOAD
10 M
MCU
EXTAL
XTAL
4 x E
CRYSTAL
25 pF *
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