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PCA2002
Datasheet
(Product Specification)
11-Nov-08, 25 pages, 125 kB
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 | Orderable part number | Ordering code (12NC) | Product status | Package | Packing | Marking | ECCN |
|---|---|---|---|---|---|---|---|
| PCA2002CX8/5/1 | PCA2002CX8/5/1,025 | 9352 868 21025 | Volume production | Uncased die | Chips on Wafer, Un-Sawn, Electrical Tested | No Marking | |
| PCA2002U/10AB/1 | PCA2002U/10AB/1,00 | 9352 781 68005 | Volume production | Uncased die | Chips on Wafer, Pre-Sawn, On FFC | No Marking | |
| PCA2002U/AB/1 | PCA2002U/AB/1,026 | 9352 781 65026 | Volume production | Uncased die | Die In Waffle Carriers | No Marking |
Quality/reliability/chemical content
| Type number | Orderable part number | Chemical content | RoHS | Leadfree Conversion date | RHF | IRF (FIT) | MTBF (hours) | MSL |
|---|---|---|---|---|---|---|---|---|
| PCA2002CX8/5/1 | PCA2002CX8/5/1,025 | PCA2002CX8_5_1 |
| Always Pb-free | ||||
| PCA2002U/10AB/1 | PCA2002U/10AB/1,00 | PCA2002U_10AB_1 |
| Always Pb-free | ||||
| PCA2002U/AB/1 | PCA2002U/AB/1,026 | PCA2002U_AB_1 |
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Orderable part number | Indicative price/unit($) | Region | Distributor | In stock | Order quantity | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|---|---|
| PCA2002CX8/5/1 | 9352 868 21025 | PCA2002CX8/5/1,025 | not available | |||||||
| PCA2002U/10AB/1 | 9352 781 68005 | PCA2002U/10AB/1,00 | Order samples | |||||||
| PCA2002U/AB/1 | 9352 781 65026 | PCA2002U/AB/1,026 | not available |
Applications
- Driver circuits for bipolar stepping motors
- High immunity motor drive circuits
- High production volumes
