参数资料
型号: SAF-C868P-1SGBA
厂商: INFINEON TECHNOLOGIES AG
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 40 MHz, MICROCONTROLLER, PDSO28
封装: PLASTIC, SO-28
文件页数: 16/82页
文件大小: 1252K
代理商: SAF-C868P-1SGBA
C868
Data Sheet
23
V 1.0, 2003-05
Figure 12 shows the recommended oscillator circuitries for crystal and external clock
operation.
Figure 12
Recommended Oscillator Circuit
In this application the on-chip oscillator is used as a crystal-controlled, positive-
reactance oscillator (a more detailed schematic is given in Figure 13). lt is operated in
its fundamental response mode as an inductive reactor in parallel resonance with a
capacitor external to the chip. The crystal specifications and capacitances are non-
critical. In this circuit tbd pF can be used as single capacitance at any frequency together
with a good quality crystal. A ceramic resonator can be used in place of the crystal in
cost-critical applications. If a ceramic resonator is used, the two capacitors normally
have different values depending on the oscillator frequency. We recommend consulting
the manufacturer of the ceramic resonator for value specifications of these capacitors.
C = 20 pF
± 10 pF for crystal operation
6.67-10.67
XTAL2
XTAL1
C868
(incl. StrayCapacitance)
Crystal Oscillator Mode
Driving from External Source
N.C.
External Oscillator
Signal
XTAL2
XTAL1
MHz
相关PDF资料
PDF描述
SAK-C868A-1SGBA 8-BIT, 40 MHz, MICROCONTROLLER, PDSO28
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