參數(shù)資料
型號(hào)： PCA2002
廠商： NXP Semiconductors N.V.
英文描述： 32 kHz watch circuit with programmable output period and pulse width
中文描述： 32千赫的可編程輸出和脈沖寬度的手表電路
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 124K
代理商： PCA2002
2004 Jan 20
2
Philips Semiconductors
Product specification
32 kHz watch circuit with programmable
output period and pulse width
PCA2002
FEATURES
32 kHz quartz oscillator, amplitude regulated with
excellent frequency stability and high immunity to
leakage currents
Electrically programmable time calibration with 1 ppm
resolution (stored in OTP memory)
The quartz crystal is the only external component
required
Very low current consumption: typically 90 nA
Output pulses for bipolar stepping motors
Five different programmable output periods (1 s to 30 s)
Output pulse width programmable between
1 ms and 8 ms
Full or chopped motor pulse and pulse stretching,
selectable
Stop function for accurate time setting and current
saving during the shelf life
Test mode for accelerated testing of the mechanical
parts of the watch.
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 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.
Pin RESET is used for stopping the motor, accurate time
setting and for an accelerated testing of the watch.
ORDERING INFORMATION
TYPE NUMBER
PACKAGE
NAME
PMFP8
HVSON10
DESCRIPTION
VERSION
SOT144-1
SOT650-1
PCA2002U/AA
PCA2002U/10AA
PCA2002T
PCA2002TK
bare die; chip in tray
bare die; chip on film frame carrier
plastic micro flat package; 8 leads (straight)
plastic thermal enhanced very thin small outline package;
no leads; 10 terminals; body 3
×
3
×
0.85 mm
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA2002CX8/5/1 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:32 kHz watch circuit with programmable output period and pulse width
PCA2002CX8/5/1,025 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 32KHZ WATCH CIRCUIT RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
PCA2002T 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:32 kHz watch circuit with programmable output period and pulse width
PCA2002TK 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:32 kHz watch circuit with programmable output period and pulse width
PCA2002TK/1,118 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 WATCH IC RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
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