Philips PCA16xx series Data Sheet
Summary
This comprehensive technical document details the PCA16xx series, a specialized CMOS integrated circuit designed for ultra-low current, battery-operated quartz crystal wristwatches. These advanced circuits provide precise timing and essential diagnostics, including power-on reset, crystal oscillator stability, and critical end-of-life (EOL) detection for both silver-oxide and lithium batteries. The manual covers functional specifications, detailed testing modes (T1, T2, T3), and ordering information, making it an essential resource for electronics engineers and watch manufacturers designing reliable, high-performance timing mechanisms.
Page 1 Text Content
查询PCA16xx series供应商
INTEGRATED CIRCUITS
DATA SHEET
PCA16xx series k Hz watch circuits with EEPROM
Product specification Dec
Supersedes data of 1997 Apr File under Integrated Circuits, IC16
Page Summary Contents For Philips PCA16xx series Data Sheet
Manual Details
| Brand | Philips |
|---|---|
| Pages | 16 |
| File Size | 69.92 KB |
| Published | June 19, 2026 |
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Frequently Asked Questions
What external components are needed for the oscillator?
A quartz crystal is the only external component required for the oscillator.
How does the reset functionality work?
Connecting RESET to VDD stops the motor pulses and provides a jitter-free 32 Hz signal at TEST.
Which conditions trigger voltage level detection?
Supply voltage is compared with internal references every minute, with a debounce circuit.
What distinguishes silver-oxide from lithium modes?
Lithium mode uses 75% duty factor motor pulse; silver-oxide mode activates below V_lit above V_eol.
When are test modes accessible?
Test modes 1, 2, and 3 are activated by connecting RESET to VDD under specific voltage thresholds.