Select site:
- English
PCA2002
Datasheet
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 pct. 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.
Features
- Amplitude-regulated 32 kHz quartz crystal oscillator, with excellent frequency stability and high immunity to leakage currents
- Electrically programmable time calibration with 1 ppm resolution stored in One Time Programmable (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 shelf life
- Test mode for accelerated testing of the mechanical parts of the watch
- Test bits for type recognition
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| PCA2002CX8/5/1 | 9352 868 21025 | Volume production | Uncased die | Chips on Wafer, Un-Sawn, Electrical Tested | No Marking | PCA2002CX8/5/1
| Always Pb-free | |
| PCA2002U/10AB/1 | 9352 781 68005 | Volume production | Uncased die | Chips on Wafer, Pre-Sawn, On FFC | No Marking | PCA2002U/10AB/1
| Always Pb-free | |
| PCA2002U/AB/1 | 9352 781 65026 | Volume production | Uncased die | Die In Waffle Carriers | No Marking | PCA2002U/AB/1
| Always Pb-free | |
| PCA2003U/10AA/1 | 9352 797 24005 | Volume production | Uncased die | Chips on Wafer, Pre-Sawn, On FFC | No Marking | PCA2003U/10AA/1
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|
| PCA2002CX8/5/1 | 9352 868 21025 | not available | |||||||
| PCA2002U/10AB/1 | 9352 781 68005 | Order samples | |||||||
| PCA2002U/AB/1 | 9352 781 65026 | Order samples | |||||||
| PCA2003U/10AA/1 | 9352 797 24005 | Order samples |
Applications
- Driver circuits for bipolar stepping motors
- High immunity motor drive circuits
- High production volumes
Disclaimer
The information published on product information pages of the www.nxp.com or www.semiconductors.com websites is an extract from product data sheets and is for information purposes only. For detailed information please check the most recent version of the relevant product data sheet as published on these websites. In the event of any conflict between product information pages and data sheets or deviations from information provided in the product data sheets on these product information pages, the information provided in the product data sheets shall prevail.
The product status of the product(s) described in the product data sheet may have changed since publication of the data sheet and therefore information in datasheets on product status may be outdated. The latest information on product status is published on the product information pages of the above-mentioned websites.
As from October 1st, 2006 Philips Semiconductors has a new trade name - NXP Semiconductors, which will be used in future data sheets together with new contact details. In data sheets where the previous Philips references remain, please use the new links as shown below.
- http://www.philips.semiconductors.com use http://www.nxp.com
- http://www.semiconductors.philips.com use http://www.nxp.com (Internet)
- sales.addresses@www.semiconductors.philips.com use salesaddresses@nxp.com (e-mail)
The copyright notice at the bottom of each page (or elsewhere in the document, depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved -
is replaced with:
- © NXP B.V. (year). All rights reserved.-
If you have any questions related to the data sheet, please contact our nearest sales office via e-mail or phone (details via salesaddresses@nxp.com). Thank you for your cooperation and understanding.