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PCA148x

Features: · 32 kHz oscillator, amplitude regulated with excellent frequency stability· High immunity of the oscillator to leakage currents· Time calibration electrically programmable and reprogrammable (via EEPROM)· A quartz crystal is the only external component required· Very low current consump...

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SeekIC No. : 004456216 Detail

PCA148x: Features: · 32 kHz oscillator, amplitude regulated with excellent frequency stability· High immunity of the oscillator to leakage currents· Time calibration electrically programmable and reprogramma...

PCA148x Data Sheet

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Part Number:
PCA148x
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· 32 kHz oscillator, amplitude regulated with excellent frequency stability
· High immunity of the oscillator to leakage currents
· Time calibration electrically programmable and reprogrammable (via EEPROM)
· A quartz crystal is the only external component required
· Very low current consumption; typically 170 nA
· Output for bipolar stepping motors of different types
· Up to 50% reduction in motor current compared with conventional circuits, by self adaption of the motor pulse width in accordance with the required torque of the motor
· No loss of motor steps possible because of on-chip detection of the induced motor voltage
· Indication for battery end-of-life
· Stop function for accurate timing
· Power-on reset for fast testing
· Various test modes for testing the mechanical parts of the watch and the IC.


Pinout

Connection Diagram


Description

The PCA148x series devices are CMOS integrated circuits specially suited for battery-operated, quartz-crystal-controlled wrist-watches, with a bipolar stepping motor.




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