Specifications | PCF8523 Real-Time Clock \RTC\ and calendar NXP Semiconductors |
Business section |

Specifications | PCF8523 Real-Time Clock \RTC\ and calendar NXP Semiconductors |
Business section |
Specifications | PCF8523 Real-Time Clock \RTC\ and calendar NXP Semiconductors |
Outline | 1. General description 2. Features and benefits 3. Applications 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 7.1 Pinning 7.2 Pin description 4. Ordering information 5. Marking 6. Block diagram 7. Pinning information 8. Functional description 9. Internal circuitry 10. Limiting values 11. Static characteristics 12. Dynamic characteristics 13. Application information 14. Package outline 15. Bare die outline 16. Handling information 17. Packing information 18. Soldering of SMD packages 19. Abbreviations 20. References 21. Revision history 22. Legal information 23. Contact information 24. Contents |
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Content | 1. General description The PCF8523 is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption. Data is transferred serially via an I2C-bus with a maximum data rate of 1000kbit/s. Alarm and timer functions are available with the possibility to generate a wake-up signal on an interrupt pin. An offset register allows fine-tuning of the clock. The PCF8523 has a backup battery switch-over circuit, which detects power failures and automatically switches to the battery supply when a power failure occurs. 2. Features and benefits Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768kHz quartz crystal Resolution: seconds to years Clock operating voltage: 1.0Vto5.5V Low backup current: typical 150nAat VDD=3.0V and Tamb=25qC 2 line bidirectional 1 MHz Fast-mode Plus (Fm+) I2C interface Battery backup input pin and switch-over circuit Freely programmable timer and alarm with interrupt capability Selectable integrated oscillator load capacitors for CL=7pF or CL=12.5pF Internal Power-On Reset (POR) Open-drain interrupt or clock output pins Programmable offset register for frequency adjustment 3. Applications Time keeping application Battery powered devices Metering PCF8523 Real-Time Clock (RTC) and calendar Rev. 3 — 30 March 2011Product data sheet 1.The definition of the abbreviations and acronyms used in this data sheet can be found in Section19. |
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Following Datasheets | PCIe-x4_AOC_User_Manual_2 (12 pages) PCIe-x8_AOC_User_Manual_2 (12 pages) pcimchina03pwrmosdesign (4 pages) pci_32_ds206_1 (13 pages) pci_64_ds205_1 (12 pages) PCN-1026_2 (1 pages) PCN-1027_2 (1 pages) PCN-1042_2 (2 pages) PCN-1084_2 (2 pages) PCN-2003-1028_2 (1 pages) |
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