上海航順微電子有限公司 鐘永梅 15216859411 QQ:2355260618 公司網(wǎng)址：www.hsjt8888.cn 全國最低價格，抗靜電4000V， Features Operating voltage: 2.4V~5.2V Built-in 256kHz RC oscillator External 32.768kHz crystal or 256kHz frequency source input Selection of 1/2 or 1/3 bias, and selection of 1/2 or  1/3 or 1/4 duty LCD applications Internal time base frequency sources Two selectable buzzer frequencies (2kHz/4kHz) Power down command reduces power consumption Built-in time base generator and WDT Time base or WDT overflow output 8 kinds of time base/WDT clock sources 324 LCD driv