32 kHz watch circuits with adaptive motor pulse

GENERAL DESCRIPTION The PCA146x series devices are CMOS integrated circuits specially suited for battery-operated, quartz-crystal-controlled wrist-watches, with a bipolar stepping motor. FEATURES • 32 kHz oscillator, amplitude regulated with excellent frequency stability • High immunity of the

文件：100.42 Kbytes 页数：24 Pages

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32 kHz oscillator, amplitude regulated with excellent frequency stability

文件：135.7 Kbytes 页数：24 Pages

PHI

PHI

32 kHz oscillator, amplitude regulated with excellent frequency stability

文件：135.7 Kbytes 页数：24 Pages

PHI

PHI

32 kHz oscillator, amplitude regulated with excellent frequency stability

文件：135.7 Kbytes 页数：24 Pages

PHI

PHI

32 kHz oscillator, amplitude regulated with excellent frequency stability

文件：135.7 Kbytes 页数：24 Pages

PHI

PHI

带有自适应电机脉冲的32 kHz表电路

PCA146x系列器件是CMOS集成电路，特别适合由电池供电、石英晶体控制的手表，带有双极步进电机。\nPCA1462U不得用于新设计。 32 kHz振荡器，振幅调节式且具备极佳的频率稳定性\n振荡器具有高耐漏电性\n电可编程且可重新编程的时间校准（通过 EEPROM）\n石英晶体是仅需的外部组件\n极低的电流消耗；典型为170 nA\n不同类型的双极步进电机输出\n通过自行适应与所需电机扭矩相匹配的电机脉冲宽度，相比传统电路最多能减少50%的电机电流\n因为在片上检测感应电机电压，所以不会损失电机步进\n锂或氧化银电池电压的检测器\n电池寿命用尽的指示\n用于精确定时的停止功能\n用于快速测试的电源上电复位\n用于测试表和IC中机械部件的各种测试模式;

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