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 write-protects the memory contents and powers the clock and SRAM from the battery. The DS3030W also contains a power-supply monitor output (active-low RST), as well as a user-programmable interrupt output (active-low IRQ/FT).
Key Features
Applications/Uses
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
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Download
E-Mail