DS1643P中文资料Nonvolatile Timekeeping RAMs数据手册ADI规格书

特性 Features

• Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit and Lithium Energy Source
• Clock Registers are Accessed Identically to the Static RAM. These Registers Reside in the Eight Top RAM Locations.
• Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
• Access Times of 70ns and 100ns
• BCD-Coded Year, Month, Date, Day, Hours,Minutes, and Seconds with Leap Year Compensation Valid Up to 2100
• Power-Fail Write Protection Allows for ±10% VCC Power Supply Tolerance
• Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time
• DS1643 Only (DIP Module) Standard JEDEC Byte-Wide 8K x 8 RAM Pinout
• UL Recognized
• DS1643P Only (PowerCap Module Board)

简介

DS1643P属于集成电路（IC）的实时时钟。由制造生产的DS1643P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。