Datasheet > 消费电路 > 时钟集成电路> PCA2003U/10AA/1

PCA2003U/10AA/1

更新时间： 2024-09-15 06:01:39

品牌	Logo	应用领域
恩智浦 - NXP		消费电路时钟集成电路脉冲电机
页数	文件大小	规格书
21页	110K
描述
32 kHz watch circuit with programmable adaptive motor pulse and pulse period

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PCA2003U/10AA/1 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	, DIE OR CHIP	Reach Compliance Code：	unknown
风险等级：	5.84	最高工作温度：	60 °C
最低工作温度：	-10 °C	封装等效代码：	DIE OR CHIP
电源：	1.55 V	认证状态：	Not Qualified
子类别：	Clock ICs	技术：	CMOS
温度等级：	COMMERCIAL	Base Number Matches：	1

PCA2003U/10AA/1 数据手册

PCA2003

32 kHz watch circuit with programmable adaptive motor pulse

and pulse period

Rev. 02 — 21 July 2009

Product data sheet

1. General description

The PCA2003 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.

2. Features

I Amplitude-regulated 32 kHz quartz crystal oscillator, with excellent frequency stability

and high immunity to leakage currents

I Electrically programmable time calibration with 1 ppm resolution stored in One Time

Programmable (OTP) memory

I The quartz crystal is the only external component connected

I Very low supply current, typical 90 nA

I One second output pulses for bipolar stepping motor

I Five different programmable output periods (1 s to 30 s)

I Minimum power consumption for the entire watch, due to self adaptation of the motor

drive according to the required torque

I Reliable step detection circuit

I Motor pulse width, pulse modulation, and pulse adaptation range programmable in a

wide range, stored in OTP memory

I Stop function for accurate time setting and power saving during shelf life

I Test mode for accelerated testing of the mechanical parts of the watch and the IC

I Test bits for type recognition

12 3 4 5 6 7...21

中文翻译

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与PCA2003U/10AA/1相关器件

型号	品牌	获取价格	描述	数据表
PCA2003U/10AA/1,00	NXP	获取价格	PCA2003 - 32 kHz watch circuit with programmable adaptive motor pulse and pulse period
PCA2003U/10AC/1	NXP	获取价格	32 kHz watch circuit with programmable adaptive motor pulse and pulse period
PCA200A2	ETC	获取价格	Optoelectronic
PCA200A3K	VCC	获取价格	Visible LED, Transparent
PCA200AB	VCC	获取价格	Visible LED,
PCA200-ALP	VCC	获取价格	Single Color LED, Amber, Diffused, T-1 3/4, 5.1mm, 2PIN
PCA200-BA	VCC	获取价格	Single Color LED, Amber, Diffused, T-1 3/4, 5.1mm, 2PIN
PCA200-BA12V	VCC	获取价格	Single Color LED, Amber, Diffused, T-1 3/4, 5.1mm, 2PIN
PCA200-BA5V	VCC	获取价格	Single Color LED, Amber, Diffused, T-1 3/4, 5.1mm, 2PIN
PCA200-BCA	VCC	获取价格	Single Color LED, Amber, Tinted, T-1 3/4, 5.1mm, 2PIN

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