Features
Battery Cell Controller, Advanced, 6 Channels, TPL, LQFP48.
Package
HLQFP48 LQFP64, plastic, low profile quad flat package; 64 terminals; 0.5 mm pitch; 10 mm x 10 mm x 1.4 mm body.
Features
32 kHz watch circuit with programmable adaptive motor pulse
Buy Options
PCA2000U/10AC/1,00
Active
12NC: 935289557005
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PCA2000U/10AA/1,00
No Longer Manufactured
12NC: 935269429005
Details
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PCA2000U/10AB/1,00
No Longer Manufactured
12NC: 935278082005
Details
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PCA2000U/AA/1,026
No Longer Manufactured
12NC: 935271523026
Details
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PCA2000U/AB/1,026
No Longer Manufactured
12NC: 935278081026
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PCA2000U/AC/1,026
No Longer Manufactured
12NC: 935289556026
Details
Order
Operating Features
| Parameter | Value |
|---|---|
Failures in time | 5 |
Mean time between failures | 200000000 |
| Parameter | Value |
|---|---|
Security Status | COMPANY PUBLIC |
Description | 32 kHz watch circuit with programmable adaptive motor pulse |
Environmental
| Part/12NC | PbFree | EU RoHS | Halogen Free | RHF Indicator | REACH SVHC | Weight (mg) |
|---|---|---|---|---|---|---|
PCA2000U/10AA/1,00(935269429005) | No | No | - | REACH SVHC | - | |
PCA2000U/10AB/1,00(935278082005) | No | No | - | REACH SVHC | - | |
PCA2000U/10AC/1,00(935289557005) | Yes | Yes Certificate Of Analysis (CoA) | Yes |  | REACH SVHC | 0.50328 |
PCA2000U/AA/1,026(935271523026) | No | No | - | REACH SVHC | - | |
PCA2000U/AB/1,026(935278081026) | Yes | Yes | No |  | REACH SVHC | 8130.0 |
PCA2000U/AC/1,026(935289556026) | Yes | Yes | Yes | | REACH SVHC | 0.50328 |
Quality
| Part/12NC | Safe Assure Functional Safety | FIT | MTBF |
|---|---|---|---|
PCA2000U/10AA/1,00 (935269429005) | - | 5 | 2.0E8 |
PCA2000U/10AB/1,00 (935278082005) | - | 5 | 2.0E8 |
PCA2000U/10AC/1,00 (935289557005) | No | 5 | 2.0E8 |
PCA2000U/AA/1,026 (935271523026) | - | 5 | 2.0E8 |
PCA2000U/AB/1,026 (935278081026) | - | 5 | 2.0E8 |
PCA2000U/AC/1,026 (935289556026) | No | 5 | 2.0E8 |
Shipping
| Part/12NC | Harmonized Tariff (US)Disclaimer |
|---|---|
PCA2000U/10AA/1,00 (935269429005) | 854239 |
PCA2000U/10AB/1,00 (935278082005) | 854239 |
PCA2000U/10AC/1,00 (935289557005) | 854239 |
PCA2000U/AA/1,026 (935271523026) | 854239 |
PCA2000U/AB/1,026 (935278081026) | 854239 |
PCA2000U/AC/1,026 (935289556026) | 854239 |
Discontinued and Replacement Part Data
| Part/12NC | Discontinuance Notice | Last Time Buy Date | Last Time Delivery Date | Replacement |
|---|---|---|---|---|
PCA2000U/10AA/1,00 (935269429005) | - | 2004-03-31 | 2004-06-30 | - |
PCA2000U/10AB/1,00 (935278082005) | - | 1998-01-30 | 1998-12-31 | PCA2000U/10AC/1,00 (935289557005) |
PCA2000U/AA/1,026 (935271523026) | - | 2004-03-31 | 2004-06-30 | - |
PCA2000U/AB/1,026 (935278081026) | - | 2014-12-31 | 2015-06-30 | PCA2000U/AC/1,026 (935289556026) |
PCA2000U/AC/1,026 (935289556026) | - | 2018-04-24 | 2018-07-24 | PCA2000U/10AC/1,00 (935289557005) |
More about PCA2000_PCA2001
The PCA2000 and PCA2001 are CMOS integrated circuits for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum power consumption. A timing accuracy of 1 ppm is achieved with a programmable, digital frequency adjustment.
To obtain the minimum overall power consumption for the watch, an automatic motor pulse adaptation function is provided. The circuit supplies only the minimum drive current, which is necessary to ensure a correct motor step. Changing the drive current of the motor is achieved by chopping the motor pulse with a variable duty cycle. The pulse width and the range of the variable duty cycle can be programmed to suit different types of motors. The automatic pulse adaptation scheme is based on a safe dynamic detection of successful motor steps.
A pad RESET is provided (used for stopping the motor) for accurate time setting and for accelerated testing of the watch.
The PCA2000 has a battery End Of Life (EOL) warning function. If the battery voltage drops below the EOL threshold voltage (which can be programmed for silver oxide or lithium batteries), the motor steps change from one pulse per second to a burst of four pulses every 4 seconds.
The PCA2001 uses the same circuit as the PCA2000, but without the EOL function.