PCA2002CX8SLASH5SLASH1 datasheet(1/25 Pages) NXP

tên linh kiện	PCA2002CX8/5/1

Giải thích chi tiết về linh kiện	32 kHz watch circuit with programmable output period and pulse width

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1.

General description

The PCA2002 is a CMOS integrated circuit for battery operated wrist watches with a

32 kHz quartz crystal as the timing element and a bipolar stepping motor. The quartz

crystal oscillator and the frequency divider are optimized for minimum current

consumption. A timing accuracy of 1 ppm is achieved with a programmable, digital

frequency adjustment.

The output period and the output pulse width can be programmed. It can be selected

between a full output pulse or a chopped output pulse with a duty cycle of 75 %. In

addition, a stretching pulse can be added to the primary driving pulse.

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 required

I Very low current consumption: typically 90 nA

I Output pulses for bipolar stepping motors

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

I Output pulse width programmable between 1 ms and 8 ms

I Full or chopped motor pulse and pulse stretching, selectable

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

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

I Test bits for type recognition

3.

Applications

I Driver circuits for bipolar stepping motors

I High immunity motor drive circuits

I High production volumes

PCA2002

32 kHz watch circuit with programmable output period and

pulse width

Rev. 05 — 11 November 2008

Product data sheet

Số phần tương tự - PCA2002CX8/5/1

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
NXP Semiconductors	PCA2002	124Kb / 20P	32 kHz watch circuit with programmable output period and pulse width 2004 Jan 20
	PCA2002T	124Kb / 20P	32 kHz watch circuit with programmable output period and pulse width 2004 Jan 20
	PCA2002TK	124Kb / 20P	32 kHz watch circuit with programmable output period and pulse width 2004 Jan 20
	PCA2002U/10AA	124Kb / 20P	32 kHz watch circuit with programmable output period and pulse width 2004 Jan 20
	PCA2002U/AA	124Kb / 20P	32 kHz watch circuit with programmable output period and pulse width 2004 Jan 20

More results

Mô tả tương tự - PCA2002CX8/5/1

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
NXP Semiconductors	PCA2000	120Kb / 19P	32 kHz watch circuit with programmable adaptive motor pulse 2003 Dec 17
	PCA2002	124Kb / 20P	32 kHz watch circuit with programmable output period and pulse width 2004 Jan 20
	PCA2001	140Kb / 28P	32 kHz watch circuit with programmable adaptive motor pulse Rev. 05-11 November 2008
	PCA2003	108Kb / 21P	32 kHz watch circuit with programmable adaptive motor pulse and pulse period Rev. 01-15 December 2008
	PCA2003	118Kb / 21P	32 kHz watch circuit with programmable adaptive motor pulse and pulse period Rev. 02-21 July 2009
	PCA2000	609Kb / 30P	32 kHz watch circuit with programmable adaptive motor pulse Rev. 08-23 August 2010
	PCA1461U	100Kb / 24P	32 kHz watch circuits with adaptive motor pulse 1998 Apr 21
	PCA146X	115Kb / 24P	32 kHz watch circuits with adaptive motor pulse 1998 Apr 21
	PCA148X	104Kb / 20P	32 kHz watch circuits with adaptive motor pulse 1998 Apr 21
	PCA16XX	81Kb / 16P	32 kHz watch circuits with EEPROM 1997 Dec 12

More results

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