DS2404数据手册集成电路（IC）的实时时钟规格书PDF

描述 Description

The DS2404 1-Wire® EconoRAM time chip offers a simple solution for storing and retrieving vital data and time information with minimal hardware. The DS2404 contains a unique lasered ROM, real-time clock/calendar, interval timer, cycle counter, programmable interrupts, and 4096-bits of SRAM. Two separate ports are provided for communication: 1-Wire and 3-wire. Using the 1-Wire port, only one pin is required for communication, and the lasered-ROM can be read even when the DS2404 is without power. The 3-wire port provides high-speed communication using the traditional Dallas Semiconductor 3-wire interface. With either interface, a strict protocol for accessing the DS2404 ensures data integrity. Utilizing backup energy sources, the data is nonvolatile (NV) and allows for stand-alone operation. The DS2404 features can be used to create a stopwatch, alarm clock, time and date stamp, logbook, hour meter, calendar, system power-cycle timer, expiration timer, and event scheduler.

特性 Features

• 4096 bits of nonvolatile dual-port memory including real-time clock/calendar in binary format, programmable interval timer, and programmable power-on cycle counter
• 1-Wire interface for communication at 16.3kbps
• 3-wire host interface for high-speed data communications at 2Mb/s
• Unique, factory-lasered and tested 64-bit registration number assures absolute traceability because no two parts are alike
• Programmable alarms can be set to generate interrupts for interval timer, real-time clock, and/or cycle counter
• 16-pin DIP, SO, and SSOP packages
• Operating temperature range from -40°C to +85°C
• Operating voltage range from 2.8V to 5.5V

简介

DS2404属于集成电路（IC）的实时时钟。由制造生产的DS2404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。