NXP Semiconductors UM10301 PCA2125 Bedienungsanleitung PDF herunterladen

UM10301

User Manual for NXP Real Time Clocks PCF85x3, PCA8565

and PCF2123, PCA2125

Rev. 01 — 23 December 2008 User manual

Document information

Info Content

Keywords PCF8563, PCF8573, PCF8583, PCF8593, PCA8565, PCF2123,

PCA2125, PCF2120, RTC, real time clock, timekeeping, crystal,

32.768 kHz, backup.

Abstract This application note aims to assist a user of above mentioned Real Time

Clocks in achieving succesful design-in and application. It contains useful

hints with respect to electrical schematic and PCB layout as well as code

examples for the well established NXP PCF8563 and related Real Time

Clocks. Also the more recent Real Time Clocks PCF2123 and PCA2125

have been taken into account.

1 2 3 4 5 6 ... 51 52

Inhaltsverzeichnis

Seite 1 - UM10301

UM10301 User Manual for NXP Real Time Clocks PCF85x3, PCA8565 and PCF2123, PCA2125 Rev. 01 — 23 December 2008 User manual Document

Seite 2 - Contact information

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 3 - 1. Introduction

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 4 - 2. Features

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 5

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 6 - 3. Comparison

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 7

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 8 - 5. Voltage-low detector

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 9 - 6. Oscillator

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 10 - NXP Semiconductors

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 11

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 12

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01

Seite 13

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 14

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 15 - 6.1 Oscillation allowance

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 16

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 17 - 7.2 Effect of temperature

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 18 - 1 TTBfff

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 19

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 20 - 9. Accuracy

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 21

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 22 - 10. Oscillator tuning

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 23

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 24

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 25 - 11.1 Century tracking

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 26

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 27 - 12.2 Alarm

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 28

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 29 - 12.3 Setting the timer

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 30 - 13. Backup power supply

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 31

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 32

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 33 - 13.3 Capacitors

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 34

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 35 - CbackupendrtCbackupsta

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 36 - 14. PCB layout guidelines

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 37

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 38

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 39

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 40 - 0005.003.06.41085.8

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 41

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 42

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 43 - INT is set to pulsed mode

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 44

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 45 - C read and write

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 46 - Fig 21. Block diagram I

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 47

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 48 - 19. Troubleshooting

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125 Please be aware that important notices concerning this document and th

Seite 49

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 50 - 20. References

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 51 - 21. Legal information

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

Seite 52 - 22. Contents

NXP Semiconductors UM10301 User Manual PCF85x3, PCA8565 and PCF2123, PCA2125UM10301_1 © NXP B.V. 2008. All rights reserved.User manual Rev. 01 —

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