NXP Semiconductors PCA2001
The PCA2001 uses the same circuit as the PCA2000, but without the EOL function. The definition of the abbreviations and acronyms used in this data sheet can be found in Section 15. General description The PCA2000 and PCA2001 are CMOS1 integrated circuits for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor.| Part No. | PCA2001 |
|---|---|
| Datasheet | PCA2001 Download |
| Manufacturer |  NXP Semiconductors |
| Description | CMOS |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● 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 connected
● Very low power consumption, typical 90 nA
● One second output pulses for bipolar stepping motor
● Minimum power consumption for the entire watch, due to self adaptation of the motor drive according to the required torque
● Reliable step detection circuit
● Motor pulse width, pulse modulation, and pulse adaptation range programmable in a wide range, stored in OTP memory
● Stop function for accurate time setting and power saving during shelf life 1. NXP Semiconductors PCA2000; PCA2001 32 kHz watch circuit with programmable adaptive motor pulse
● End Of Life (EOL) indication for silver oxide or lithium battery (only the PCA2000 has the EOL feature)
● Test mode for accelerated testing of the mechanical parts of the watch and the IC
● Test bits for type recognition 3.
