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. 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.
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, a.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | PCA2001 |
NXP |
CMOS | |
2 | PCA2002 |
NXP |
CMOS | |
3 | PCA2003 |
NXP |
CMOS | |
4 | PCA21125 |
NXP |
SPI-bus Real-Time Clock/calendar | |
5 | PCA2117 |
NXP |
Automotive LCD driver | |
6 | PCA2125 |
NXP Semiconductors |
SPI Real-time clock/calendar | |
7 | PCA2129 |
NXP |
Automotive accurate RTC | |
8 | PCA24S08 |
NXP Semiconductors |
1024 x 8-bit CMOS EEPROM | |
9 | PCA24S08A |
NXP |
1024 x 8-bit CMOS EEPROM | |
10 | PCA0102A |
Z-Communications |
LOW COST - HIGH PERFORMANCE PHASE LOCKED LOOP | |
11 | PCA0163A |
Z-Communications |
LOW COST - HIGH PERFORMANCE PHASE LOCKED LOOP | |
12 | PCA0174A-LF |
Z-Communications |
Telecommunications - Satellite |