BQ2204APN 供应商
-
BQ2204APN
品牌：TI 封装/批号：原厂原装/22+
BQ2204APN 属性参数
- 标准包装：25
- 类别：集成电路 (IC)
- 家庭：存储器 - 控制器
- 系列：-
- 控制器类型：非易失性 SRAM
- 电源电压：4.5 V ~ 5.5 V
- 工作温度：0°C ~ 70°C
- 封装/外壳：16-DIP（0.300"，7.62mm）
- 供应商设备封装：16-PDIP
- 包装：管件
- 其它名称：296-9375-5
产品特性
- Power monitoring and switching for 3-volt battery-backup applications
- Write-protect control
- 2-input decoder for control of up to 4 banks of SRAM
- 3-volt primary cell inputs
- Less than 10ns chip-enable propagation delay
- 5% or 10% supply operation
产品概述
The CMOS bq2204A SRAM Non-volatile Controller Unit provides all necessary functions for converting up to four banks of standard CMOS SRAM into nonvolatile read/write memory.
A precision comparator monitors the 5V VCC input for an out-of-tolerance condi-tion. When out-of-tolerance is detected, the four conditioned chip-enable outputs are forced inactive to write-protect up to four banks of SRAM.
During a power failure, the external SRAMs are switched from the VCC supply to one of two 3V backup sup-plies. On a subsequent power-up, the SRAMs are write-protected until a power-valid condition exists.
During power-valid operation, a two-input decoder transparently selects one of up to four banks of SRAM.
BQ2204APN