概述:
DS2045W是1Mb,可回流焊的非易失(NV) SRAM,由一个静态RAM (SRAM),一个NV控制器和一个内部可充电锰锂(ML)电池构成。这些元件封装在表贴模块内,采用256焊球BGA封装。模块VCC上电后,ML电池开始充电,SRAM由外部电源供电,SRAM内容可修改。VCC断电或超出容限时,控制器对SRAM的内容进行写保护,并由电池对SRAM供电。DS2045W还含有电源监控输出,/RST指示,可用作微处理器的CPU监视器.可用在工业控制器数据采集系统,RAID系统和服务器POS终端,路由器/交换器PLC.

The DS2045W is a 1Mb reflowable nonvolatile (NV) SRAM, which consists of a static RAM (SRAM), an NV controller, and an internal rechargeable manganese lithium (ML) battery. These components are encased in a surface-mount module with a 256-ball BGA footprint. Whenever VCC is applied to the module, it recharges the ML battery, powers the SRAM from the external power source, and allows the contents of the SRAM to be modified. When VCC is powered down or out of tolerance, the controller write-protects the SRAM's contents and powers the SRAM from the battery. The DS2045W also contains a power-supply monitor output, RST-bar, which can be used as a CPU supervisor for a microprocessor.Applications:Data-Acquisition Systems,Fire Alarms,Gaming,Industrial Controllers,PLC,POS Terminals,RAID Systems and Servers,Router/Switches.

• DS2045W 单片,可回流焊,27mm x 27mm BGA封装
• DS2045W 内部ML电池和充电器
• DS2045W VCC超出容限后,对SRAM无条件进行写保护
• DS2045W VCC电源失效后,自动切换到电池供电
• DS2045W 内部电源监控,检测电源是否低于标称VCC (3.3V)
• DS2045W 复位输出可用作微处理器的CPU监视器
• DS2045W 工业级温度范围(-40°C至+85°C)
• DS2045W 通过UL认证
• DS2045W Single-Piece, Reflowable, 27mm x 27mm BGA Package Footprint
• DS2045W Internal ML Battery and Charger
• DS2045W Unconditionally Write-Protects SRAM when VCC is Out-of-Tolerance
• DS2045W Automatically Switches to Battery Supply when VCC Power Failures Occur
• DS2045W Internal Power-Supply Monitor Detects Power Fail Below Nominal VCC (3.3V)
• DS2045W Reset Output can be used as a CPU Supervisor for a Microprocessor
• DS2045W Industrial Temperature Range (-40°C to +85°C)
• DS2045W UL Recognized