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首页 > Products > MCU Memory ADC Clock  > Real Time Clock >Cxcl3455 is a low-power real-time clock circuit It can communicate with CPU in real time through I2C two-wire interface circuit It is mainly used in all systems that need to provide time base
Cxcl3455 is a low-power real-time clock circuit It can communicate with CPU in real time through I2C two-wire interface circuit It is mainly used in all systems that need to provide time base

The chip can generate a variety of periodic interrupt pulses (up to one month) and has two sets of time reporting systems. The cxcl3455 is internally integrated with a low-power regulated power supply, so it can keep the oscillator working normally at a very low power consumption under severe environmental conditions (typical value: 400na @ 3.6V). The cxcl3455 has the function of crystal stop detection and latch. The validity of internal clock data can be detected by detecting this bit.

Cxcl3455 is a low-power real-time clock circuit It can communicate with CPU in real time through I2C two-wire interface circuit It is mainly used in all systems that need to provide time base
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                          目录1Ns嘉泰姆

   1.产品概述      2.产品特点      3.应用范围     4.技术规格书下载(PDF文档)1Ns嘉泰姆

   5.产品封装      6.电路原理图     7.相关产品1Ns嘉泰姆

一.产品概述1Ns嘉泰姆


   CXCL3455是一款低功耗实时时钟电路,通过I2C两线接口电路可以与CPU实时通信,主要用于一切需要提供时基的系统中。该芯片能够产生多种周期性中断脉冲(最长周期可长 达1个月),还具有两套报时系统。CXCL3455内部集成一低功耗的稳压电源,故能够使恶 劣的环境条件下仍能保持振荡器正常在很低的功耗工作(典型值:400nA@3.6V)。 CXCL3455具有晶振停振检测锁存的功能,通过检测该位可以检测内部时钟数据的有效性。 BJCXCL3455数字时间调整电路,可以保证时钟走时的高精度,并且有32KHz和 32.768KHz两种晶振选择模式。该产品与理光RS5C372A完全兼容。  1Ns嘉泰姆

二.产品特点1Ns嘉泰姆


● 超低功耗(典型值400nA@3.6V)1Ns嘉泰姆

● 实时时钟(12时制或者24时制两种计时方式)1Ns嘉泰姆

● 自动识别闰年、平年(2000~2099)1Ns嘉泰姆

● BCD码表示的时钟计数(包括时、分、秒)和万年历(包括闰年、平年、月、日、周)1Ns嘉泰姆

● 30秒数字校时功能1Ns嘉泰姆

● 可控的32.768KHz(或者32KHz)输出1Ns嘉泰姆

● 两个可编程闹钟输出1Ns嘉泰姆

● 两路可编程方波输出,为CPU提供多种中断(一个月至一秒的周期性中断)1Ns嘉泰姆

● 通过I2C两线接口与CPU相连(最大数据时钟频率为100KHz)1Ns嘉泰姆

● 晶振停振检测锁存功能保证了时钟数据有效性1Ns嘉泰姆

● 32KHz和32.768KHz晶振选择1Ns嘉泰姆

● 高精度的时间调整电路,保证了时钟走时的精确1Ns嘉泰姆

● 超低电压工作(计时电压最低可至1.8V,通讯电压最低可至1.8V)1Ns嘉泰姆

● SOP8或TSSOP8封装1Ns嘉泰姆

三.应用范围1Ns嘉泰姆


    时钟1Ns嘉泰姆

四.技术规格书(产品PDF)1Ns嘉泰姆


需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持!1Ns嘉泰姆

 QQ截图20160419174301.jpg1Ns嘉泰姆

五.产品封装图1Ns嘉泰姆


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六.电路原理图1Ns嘉泰姆


   blob.png1Ns嘉泰姆

七.相关芯片选择指南1Ns嘉泰姆


微功耗实时时钟(Real Time   Clock)
Part   No. Alarm Sets Periodic INT Standby CLK/INT Output Clock Adj. I/O Clock VDD Work   VDD Package
CXCL3455 2 2Hz to 1   Month 400nA   @5.0V Open Drain Yes Two-wire   Serial 1.8~5.5V 1.8~5.5V SOP8  TSSOP8
CXCL3456T 1.4~5.5V 1.6~5.5V @23C<0.04S/d, Temperature Coefficient   <0.01S/d.C Two-wire Serial SOP14