BQ2201中文资料用于 1 个 SRAM 组的 SRAM 非易失性控制器 IC数据手册TI规格书

描述 Description

The CMOS bq2201 SRAM Nonvolatile Controller Unit provides all necessary functions for converting a standard CMOS SRAM into nonvolatile read/write memory. A precision comparator monitors the 5V VCC input for an out-of-tolerance condition. When out of tolerance is detected, a conditioned chip-enable output is forced inactive to write-protect any standard CMOS SRAM. During a power failure, the external SRAM is switched from the VCC supply to one of two 3V backup supplies. On a subsequent power-up, the SRAM is write-protected until a power-valid condition exists. The bq2201 is footprint- and timing-compatible with industry standards with the added benefit of a chip-enable propagation delay of less than 10ns.

特性 Features

• Power monitoring and switching for 3-volt battery-backup applications
• Write-protect control
• 3-volt primary cell inputs
• Less than 10ns chip-enable propagation delay
• 5% or 10% supply operation

简介

BQ2201属于集成电路（IC）的控制器。由TI制造生产的BQ2201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。