參數(shù)資料
型號(hào)： PCA2002CX8/5/1,025
廠商： NXP Semiconductors
文件頁數(shù)： 26/30頁
文件大?。?/td> 0K
描述： IC WATCH CIRCUIT 32KHZ DIE
標(biāo)準(zhǔn)包裝： 15,064
系列： *
PCA2002
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 8 — 25 November 2011
5 of 30
NXP Semiconductors
PCA2002
32 kHz watch circuit with programmable output period and pulse width
8.
Functional description
8.1 Motor pulse
The motor driver delivers pulses with an alternating polarity. The output waveform across
the motor terminals is illustrated in Figure 3. Between the motor pulses, both terminals are
connected to VDD, which means that the motor is short-circuit.
The following parameters can be selected and are stored in a One Time Programmable
(OTP) memory:
Output periods of 1 s, 5 s, 10 s, 20 s and 30 s
Pulse width (tp) between 0.98 ms and 7.8 ms in steps of 0.98 ms
Full or chopped (75 %) output pulse
Pulse stretching: an enlargement pulse is added to the primary motor pulse. This
enlargement pulse has a duty cycle of 25 % and a width, which is twice the
programmed motor pulse width.
8.2 Time calibration
The quartz crystal oscillator has an integrated capacitance of 5.2 pF, which is lower than
the specified capacitance (CL) of 8.2 pF for the quartz crystal (see Table 10). Therefore,
the oscillator frequency is typically 60 ppm higher than 32.768 kHz. This positive
frequency offset is compensated by removing the appropriate number of 8192 Hz pulses
in the divider chain (maximum 127 pulses), every 1 or 2 minutes. The time correction is
given in Table 4.
Fig 3.
Motor output waveforms
full pulse
mgu718
chopped
pulse
full pulse
with stretching
chopped pulse
with stretching
period
tp
2tp
tp
2tp
相關(guān)PDF資料
PDF描述
W3A43C221KAT2A CAP ARRAY 4CH 220PF 25V 0612
W3A41C331KAT2A CAP ARRAY 4CH 330PF 100V 0612
W3A41C221KAT2A CAP ARRAY 4CH 220PF 100V 0612
W2A4ZC103KAT2A CAP ARRAY 4CH 10000PF 10V 0508
3386V-1-502LF TRIMMER 5K OHM 0.5W TH
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
PCA2002TK-T 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
PCA2002U/10AA 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*