实时时钟芯片ECT1302完全替代DS1302

唯武独尊的说

实时时钟芯片ECT1302完全替代DS1302 [复制链接]

概述 

ECT1302涓流充电计时芯片包含一个实时时钟/日历和31字节的静态RAM。它通过一个简单的串行接口与微处理器通信。实时时钟/日历提供秒、分钟、小时、天、日期、月份和年份信息。对于少于31天的月份，月末日期会自动调整，包括闰年的更正。时钟以24小时或12小时的形式运行，带有AM/PM指示器。

利用同步串行通信简化了ECT1302与微处理器的接口。与时钟/RAM通信只需要三根导线：CE、I/O（数据线）和SCLK（串行时钟）。数据可以一次向时钟/RAM传输1个字节，也可以突发传输高达31个字节。ECT1302设计用于在非常低的功率下工作，并在小于1μW的功率下保留数据和时钟信息。

ECT1302还具有用于主电源和备用电源的双电源引脚、用于VCC1的可编程涓流充电器以及七个额外字节的暂存存储器的额外功能。

 

DESCRIPTION

The ECT1302 trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator.

Interfacing the ECT1302 with a microprocessor is simplified by using synchronous serial communication. Only three wires are required to communicate with the clock/RAM: CE, I/O (data line), and SCLK (serial clock). Data can be transferred to and from the clock/RAM 1 byte at a time or in a burst of up to 31 bytes. The ECT1302 is designed to operate on very low power and retain data and clock information on less than 1μW.

The ECT1302 has the additional features of dual power pins for primary and backup power supplies, programmable trickle charger for VCC1 , and seven additional bytes of scratchpad memory.

 

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