NXP Semiconductors UM10301 PCF2123 User Manual
NXP Semiconductors Hardware
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Table of contents
Document Outline
- 1. Introduction
- 2. Features
- 3. Comparison
- 4. Power-on reset (POR)
- 5. Voltage-low detector
- 6. Oscillator
- 7. Crystal and crystal selection
- 8. Capacitors and capacitor selection
- 9. Accuracy
- 10. Oscillator tuning
- 11. Century and leap year, Daylight Saving Time
- 12. Initialization and setting of alarm and timer
- 13. Backup power supply
- 14. PCB layout guidelines
- 15. Partial circuit switch down
- 16. Hints to keep power consumption low
- 17. First period inaccuracy when using the timer
- 18. Timing requirements for I2C read and write
- 19. Troubleshooting
- 20. References
- 21. Legal information
- 22. Contents