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介绍了串行输入集成销相频率合成器芯片MB1504和目前国际上体积最小的通用单片机PIC12C508／509，给出了以MB1504和PIC12C508/509为主构成的微型频率合成器设计电路。该电路的主要特点是体积小、频率调整方便。
Introduced serial input integrated frequency synthesizer chip MB1504 and the world’s smallest general-purpose microcontroller PIC12C508 / 509, gives the MB1504 and PIC12C508 / 509-based micro-frequency synthesizer circuit design. The main features of the circuit is small size, frequency adjustment convenience.