80C/82C 微处理器

AI 生成的摘要: Clock generation for the CDP1802 microprocessor uses a simple, stable crystal-controlled oscillator leveraging the on-chip oscillator amplifier and start/stop logic. Crystal oscillators require minimal external components, with frequency stability dependent on crystal Q and load capacitance. Practical designs recommend a 10MΩ to 22MΩ feedback resistor and capacitors around 20-30pF. For low-frequency needs, external RC oscillators provide cost-effective alternatives. Buffering the clock signal with a CMOS inverter reduces loading and noise. The document also details component selection and circuit examples for reliable clock generation.