NXP实时时钟用户手册

本应用笔记的目的是协助用户在应用中实现实时时钟的的设计。
UM10301
User Manual for NXP Real Time Clocks PCF85x3, PCA8565
and PCF2123, PCA2125
Rev. 01 ― 23 December 2008 User manual




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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