BQ2205LY - 用于双 SRAM 内存组的电池备份监控器

BQ2205LY是TI德州仪器公司的一款无产品，BQ2205LY是用于双 SRAM 内存组的电池备份监控器，本站介绍了BQ2205LY的封装应用图解、特点和优点、功能等，并给出了与BQ2205LY相关的TI元器件型号供参考。

BQ2205LY - 用于双 SRAM 内存组的电池备份监控器 - 无 - 监控器和复位IC - 德州仪器

产品描述

The CMOS bq2205 SRAM non-volatile controller with reset provides all the necessary functions for converting one or two banks of standard CMOS SRAM into non-volatile read/write memory.

A precision comparator monitors the 3.3-V VCC input for an out-of-tolerance condition. When out-of-tolerance is detected, the two conditioned chip-enable outputs are forced inactive to write-protect both banks of SRAM.

Power for the external SRAMs, VOUT, is switched from the VCC supply to the battery-backup supply as VCC decays. On a subsequent power-up, the VOUT supply is automatically switched from the backup supply to the VCC supply. The external SRAMs are write-protected until a power-valid condition exists. The reset output provides power-fail and power-on resets for the system. During power-valid operation, the input decoder, A, selects one of two banks of SRAM.

产品特性

Power Monitoring and Switching for Non-Volatile Control of SRAMs
Input Decoder Allows Control of 1 or 2 Banks of SRAM
Write-Protect Control
3-V Primary Cell Input
3.3-V Operation
Reset Output for System Power-On Reset
Less than 20-ns Chip Enable Propagation Delay
Small 16-Lead TSSOP Package
APPLICATIONS
- NVSRAM Modules
- Point-of-Sale Systems
- Facsimile, Printers and Photocopiers
- Internet Appliances
- Servers
- Medical Instrumentation and Industrial Products

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