DS3070W

3.3V Single-Piece 16Mb Nonvolatile SRAM with clock

Industry's First and Only Single-Piece, Reflowable NV SRAM Module

Viewing:

Overview

Single-Piece, Reflowable, 27mm x 27mm BGA Package Footprint
Integrated RTC
Internal ML Battery and Charger
Unconditionally Write-Protects SRAM when V_CC is Out-of-Tolerance
Automatically Switches to Battery Supply when V_CC Power Failures Occur
Internal Power-Supply Monitor Detects Power Fail Below Nominal V_CC (3.3V)
Reset Output can be Used as a CPU Supervisor for a Microprocessor
Industrial Temperature Range (-40°C to +85°C)

The DS3070W 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 V_CC 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 V_CC is powered down or out-of-tolerance, the controller write protects the memory contents and powers the clock and SRAM from the battery. The DS3070W also contains a power-supply monitor output (active-low RST), as well as a user-programmable interrupt output (active-low IRQ/FT).

Applications