DS1216B数据手册集成电路（IC）的控制器规格书PDF

描述 Description

The DS1216 SmartWatch RAM and SmartWatch ROM sockets are 600-mil-wide DIP sockets with a built-in CMOS watch function, an NV RAM controller circuit, and an embedded lithium energy source. The sockets provide an NV RAM solution for memory sized from 2k x 8 to 512k x 8 with package sizes from 26 pins to 32 pins. When a socket is mated with a CMOS SRAM, it provides a complete solution to problems associated with memory volatility and uses a common energy source to maintain time and date. The SmartWatch ROM sockets use the embedded lithium source to maintain the time and date only. A key feature of the SmartWatch is that the watch function remains transparent to the RAM. The SmartWatch monitors VCC for an out-of-tolerance condition. When such a condition occurs, an internal lithium energy source is automatically switched on and write protection is unconditionally enabled to prevent loss of watch and RAM data.

特性 Features

• Keeps Track of Hundredths of Seconds, Seconds, Minutes, Hours, Days, Date of the Month, Months, and Years
• Converts Standard 2k x 8 Up to 512k x 8 CMOS Static RAMs into Nonvolatile Memory
• Embedded Lithium Energy Cell Maintains Watch Information and Retains RAM Data
• Watch Function is Transparent to RAM Operation
• Automatic Leap Year Compensation Valid Up to 2100
• Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time
• Proven Gas-Tight Socket Contacts
• Full ±10% Operating Range
• Accuracy Better Than ±1 Minute/Month at +25°C

简介

DS1216B属于集成电路（IC）的控制器。由制造生产的DS1216B控制器该系列产品主要用于在采用不同通信协议和/或信令方法的端点之间提供信息连接。示例包括将 I2C 总线连接到 UART，将 USB 连接到 I2C、SPI、以太网或 UART、以太网 MAC 和 PHY 等的器件。此外，还包括用于通过为点对点通信设计的接口建立多路连接的器件，例如 USB 集线器控制器。