PCA1487 Description
chip with bumps on tape chip with bumps on tape chip on foil chip on foil GENERAL DESCRIPTION PCA148x series 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. The PCA148x series devices are CMOS...
PCA1487 Key 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 ponent required
- Very low current consumption; typically 170 nA
- Output for bipolar stepping motors of different types
- DESCRIPTION chip with bumps on tape chip with bumps on tape chip on foil chip on foil GENERAL DESCRIPTION
- 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