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ghost110

概述
PCA2003是用于电池供电手表的CMOS集成电路，带有32 kHz石英晶体作为定时元件和双极1 Hz步进电机。石英晶体振荡器和分频器经过优化可实现最小功耗。通过可编程数字频率调节实现1 ppm的定时精度。

为获得手表的最小总体功耗，提供自动电机脉冲适应功能。电路仅供应确保正确电机步进所需的最小驱动电流。通过使用可变占空比斩截电机脉冲来更改电机的驱动电流。可对可变占空比的脉冲周期和范围进行编程以适合不同类型的电机。自动脉冲适应方案基于成功电机步进的安全动态监测。

提供RESET引脚（用于停止电机）以实现精确时间设置和手表的加速测试。

eefocus_3736717

概述
PCA2003是用于电池供电手表的CMOS集成电路，带有32 kHz石英晶体作为定时元件和双极1 Hz步进电机。石英晶体振荡器和分频器经过优化可实现最小功耗。通过可编程数字频率调节实现1 ppm的定时精度。

为获得手表的最小总体功耗，提供自动电机脉冲适应功能。电路仅供应确保正确电机步进所需的最小驱动电流。通过使用可变占空比斩截电机脉冲来更改电机的驱动电流。可对可变占空比的脉冲周期和范围进行编程以适合不同类型的电机。自动脉冲适应方案基于成功电机步进的安全动态监测。

提供RESET引脚（用于停止电机）以实现精确时间设置和手表的加速测试。

eefocus_3761755

概述
PCA2003是用于电池供电手表的CMOS集成电路，带有32 kHz石英晶体作为定时元件和双极1 Hz步进电机。石英晶体振荡器和分频器经过优化可实现最小功耗。通过可编程数字频率调节实现1 ppm的定时精度。

为获得手表的最小总体功耗，提供自动电机脉冲适应功能。电路仅供应确保正确电机步进所需的最小驱动电流。通过使用可变占空比斩截电机脉冲来更改电机的驱动电流。可对可变占空比的脉冲周期和范围进行编程以适合不同类型的电机。自动脉冲适应方案基于成功电机步进的安全动态监测。

提供RESET引脚（用于停止电机）以实现精确时间设置和手表的加速测试。

wx暗夜霜

概述
PCA2003是用于电池供电手表的CMOS集成电路，带有32 kHz石英晶体作为定时元件和双极1 Hz步进电机。石英晶体振荡器和分频器经过优化可实现最小功耗。通过可编程数字频率调节实现1 ppm的定时精度。

为获得手表的最小总体功耗，提供自动电机脉冲适应功能。电路仅供应确保正确电机步进所需的最小驱动电流。通过使用可变占空比斩截电机脉冲来更改电机的驱动电流。可对可变占空比的脉冲周期和范围进行编程以适合不同类型的电机。自动脉冲适应方案基于成功电机步进的安全动态监测。

提供RESET引脚（用于停止电机）以实现精确时间设置和手表的加速测试。

eefocus_3736717

The PCF2003 is a CMOS integrated circuit for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum power consumption. A timing accuracy of 1 ppm is achieved with a programmable, digital frequency adjustment.

To obtain the minimum overall power consumption for the watch, an automatic motor pulse adaptation function is provided. The circuit supplies only the minimum drive current, which is necessary to ensure a correct motor step. Changing the drive current of the motor is achieved by chopping the motor pulse with a variable duty cycle. The pulse period and the range of the variable duty cycle can be programmed to suit different types of motors. The automatic pulse adaptation scheme is based on a safe dynamic detection of successful motor steps.

A pad RESET is provided (used for stopping the motor) for accurate time setting and for accelerated testing of the watch.

eefocus_3761755

The PCF2003 is a CMOS integrated circuit for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum power consumption. A timing accuracy of 1 ppm is achieved with a programmable, digital frequency adjustment.

To obtain the minimum overall power consumption for the watch, an automatic motor pulse adaptation function is provided. The circuit supplies only the minimum drive current, which is necessary to ensure a correct motor step. Changing the drive current of the motor is achieved by chopping the motor pulse with a variable duty cycle. The pulse period and the range of the variable duty cycle can be programmed to suit different types of motors. The automatic pulse adaptation scheme is based on a safe dynamic detection of successful motor steps.

A pad RESET is provided (used for stopping the motor) for accurate time setting and for accelerated testing of the watch.

wx暗夜霜

The PCF2003 is a CMOS integrated circuit for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum power consumption. A timing accuracy of 1 ppm is achieved with a programmable, digital frequency adjustment.

To obtain the minimum overall power consumption for the watch, an automatic motor pulse adaptation function is provided. The circuit supplies only the minimum drive current, which is necessary to ensure a correct motor step. Changing the drive current of the motor is achieved by chopping the motor pulse with a variable duty cycle. The pulse period and the range of the variable duty cycle can be programmed to suit different types of motors. The automatic pulse adaptation scheme is based on a safe dynamic detection of successful motor steps.

A pad RESET is provided (used for stopping the motor) for accurate time setting and for accelerated testing of the watch.

eefocus_3761755

The PCF2003 is a CMOS integrated circuit for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum power consumption. A timing accuracy of 1 ppm is achieved with a programmable, digital frequency adjustment.

To obtain the minimum overall power consumption for the watch, an automatic motor pulse adaptation function is provided. The circuit supplies only the minimum drive current, which is necessary to ensure a correct motor step. Changing the drive current of the motor is achieved by chopping the motor pulse with a variable duty cycle. The pulse period and the range of the variable duty cycle can be programmed to suit different types of motors. The automatic pulse adaptation scheme is based on a safe dynamic detection of successful motor steps.

A pad RESET is provided (used for stopping the motor) for accurate time setting and for accelerated testing of the watch.

eefocus_3736717

The PCF2003 is a CMOS integrated circuit for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum power consumption. A timing accuracy of 1 ppm is achieved with a programmable, digital frequency adjustment.

To obtain the minimum overall power consumption for the watch, an automatic motor pulse adaptation function is provided. The circuit supplies only the minimum drive current, which is necessary to ensure a correct motor step. Changing the drive current of the motor is achieved by chopping the motor pulse with a variable duty cycle. The pulse period and the range of the variable duty cycle can be programmed to suit different types of motors. The automatic pulse adaptation scheme is based on a safe dynamic detection of successful motor steps.

A pad RESET is provided (used for stopping the motor) for accurate time setting and for accelerated testing of the watch.

ghost110

The PCF2003 is a CMOS integrated circuit for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum power consumption. A timing accuracy of 1 ppm is achieved with a programmable, digital frequency adjustment.

To obtain the minimum overall power consumption for the watch, an automatic motor pulse adaptation function is provided. The circuit supplies only the minimum drive current, which is necessary to ensure a correct motor step. Changing the drive current of the motor is achieved by chopping the motor pulse with a variable duty cycle. The pulse period and the range of the variable duty cycle can be programmed to suit different types of motors. The automatic pulse adaptation scheme is based on a safe dynamic detection of successful motor steps.

A pad RESET is provided (used for stopping the motor) for accurate time setting and for accelerated testing of the watch.