DS1211数据手册集成电路（IC）的控制器规格书PDF

描述 Description

The DS1211 Nonvolatile Controller x8 Chip performs five circuit functions required to render standard CMOS RAM nonvolatile: Monitor Vcc using a precise comparator that detects power-fail and inhibits chip-enable Monitor battery status and warn the processor of low status Switch power between a battery and Vcc, whichever is greater Write-protect data Provide for automatically switching between two batteries Power-fail detection occurs in the range of 4.75V to 4.5V with the tolerance Pin 3 grounded. If Pin 3 in connected to Vcco, then power-fail detection occurs in the range of 4.5 volts to 4.25 volts.
By combining the DS1211 nonvolatile controller/decoder chip and lithium batteries, nonvolatile RAM operation can be achieved for up to eight CMOS memories.

特性 Features

• Controller circuitry with monitoring and logic functions to make CMOS RAM nonvolatile
• Controls up to 8 memories
• Monitors Vcc and write-protects when out of tolerance
• Consumes less than 100nA battery current
• Tests battery condition on power-up
• Supports redundant batteries
• Thermal operating ranges:
• DS1211: 0°C to +70°C
• DS1211-IND: -40° to +85°C
• Voltage/tolerances: 5V ±5% or ±10%

简介

DS1211属于集成电路（IC）的控制器。由制造生产的DS1211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。