RX4901CE数据手册集成电路（IC）的实时时钟规格书PDF

特性 Features

• Built in frequency adjusted
32.768 kHz crystal unit
• Interface Type
SPI-Bus interface 3 wire, 4 wire
• Low backup current
240 nA Typ. / 3 V
• Autopower switching function
Automatically switches to backup power supply by
monitoring the VDD voltage
• Time stamp function
32 times max. stamped from year to 1/1024 seconds.
• Time update interruption
Hourly, minutely, and secondly
• Alarm interruption in Day, date,
hour, minute, second
• Auto repeat wakeup timer interruption
• Self-monitoring interruption
Crystal oscillation stop.
VBAT low, VDD low.
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简介

RX4901CE属于集成电路（IC）的实时时钟。由制造生产的RX4901CE实时时钟实时时钟 (RTC) 为几乎所有需要保持精确时间的电子设备提供时间和/或日期信息。时钟类型有二进制计数器、时钟/日历/监控器、历时计时器、幻时钟芯片、便携式系统控制器、温度记录器、时间事件记录器和计时器时钟外设。其包含 2 B 至 2 MB 不等的存储器，接口选项有 I2C、并行、串行、SPI、1 线式、2 线式、3 线式和 4 线式。