DS1345Y Datasheet, PDF (3/12 Pages) Dallas Semiconductor – 1024k Nonvolatile SRAM with Battery Monitor

DS1345Y/AB
FRESHNESS SEAL
Each DS1345 is shipped from Dallas Semiconductor with its lithium energy source disconnected,
guaranteeing full energy capacity. When V_CC is first applied at a level greater than V_TP, the lithium
energy source is enabled for battery backup operation.
PACKAGES
The 34-pin PowerCap Module integrates SRAM memory and nonvolatile control along with contacts for
connection to the lithium battery in the DS9034PC PowerCap. The PowerCap Module package design
allows a DS1345 PCM device to be surface mounted without subjecting its lithium backup battery to
destructive high-temperature reflow soldering. After a DS1345 PCM is reflow soldered, a DS9034PC is
snapped on top of the PCM to form a complete Nonvolatile SRAM module. The DS9034PC is keyed to
prevent improper attachment. DS1345 PowerCap Modules and DS9034PC PowerCaps are ordered
separately and shipped in separate containers. See the DS9034PC data sheet for further information.
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