DS3030W

Rev 0; 6/05 3.3V Single-Piece 256kb Nonvolatile SRAM with Clock General Description The DS3030W consists of a static RAM, a nonvolatile (NV) controller, a year 2000-compliant real-time clock (RTC), 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 clock and SRAM from the external power source, and allows the contents of the clock registers or SRAM to be modified. When VCC is powered down or out-of-tolerance, the controller writeprotects the memory contents and powers the clock and SRAM from the battery. The DS3030W also contains a power-supply monitor output (RST), as well as a user-programmable interrupt output (IRQ/FT). www.DataSheet4U.com Features ♦ Single-Piece, Reflowable, 27mm x 27mm BGA Package Footprint ♦ Internal Manganese Lithium Battery and Charger ♦ Integrated Real-Time Clock ♦ Unconditionally Write-Protects the Clock and SRAM when VCC is Out-of-Tolerance ♦ Automatically Switches to Battery Supply when VCC Power Failures Occur ♦ Reset Output can be Used as a CPU Supervisor ♦ Interrupt Output can be Used as a CPU Watchdog Timer ♦ Industrial Temperature Range (-40°C to +85°C) ♦ UL Recognized DS3030W Applications RAID Systems and Servers POS Terminals Industrial Controllers Data-Acquisition Systems Gaming Fire Alarms PLCs Routers/Switches Ordering Information PART DS3030W-100 TEMP RANGE -...