Key facts
- Brand
- Philips
- Model
- PCA146X
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-05
Start here
Philips PCA146x Series 32 kHz Watch Circuits Datasheet
The PCA146x series devices are CMOS integrated circuits specially suited for battery-operated, quartz-crystal-controlled wrist-watches with a bipolar stepping motor. They feature a 32 kHz oscillator with excellent frequency stability and high immunity to leakage currents. A key feature is the adaptive motor pulse width, which reduces motor current consumption by up to 50% by matching the pulse width to the required torque of the motor.
Read onlinePhilips PCA146X specifications
| Oscillator Frequency | 32 kHz |
|---|---|
| Current Consumption | Typically 170 nA |
| Motor Current Reduction | Up to 50% |
| External Components | Quartz crystal only |
| Motor Type | Bipolar stepping motor |
Source: Philips PCA146x Series 32 kHz Watch Circuits Datasheet
All Philips PCA146X documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What external components are required for the PCA146x?
Only a quartz crystal is required as an external component.
From: Philips PCA146x Series 32 kHz Watch Circuits Datasheet
How does the PCA146x reduce motor current?
It reduces motor current by up to 50% by adapting the motor pulse width to match the required torque.
From: Philips PCA146x Series 32 kHz Watch Circuits Datasheet
What external component is required to operate the PCA146x circuit?
A quartz crystal is the only external component required for operation.
From: Philips PCA146x Series 32 kHz Watch Circuits Datasheet
How does the circuit indicate that the battery has reached end-of-life?
The waveform is produced in bursts of 4 pulses every 4 seconds to indicate this condition.
From: Philips PCA146x Series 32 kHz Watch Circuits Datasheet