The DS38464 is a self-contained 2,621,440-bit, nonvolatile static RAM (NV SRAM), which is organized as a 64k x 40 memory. Built using three 64k x 16 SRAMs, one nonvolatile control IC, and one lithium battery, this nonvolatile memory contains all the necessary control circuitry and lithium energy source to maintain data integrity in the absence of power for more than 6 years. The DS38464 employs the popular JEDEC standard 72-position SIMM connection scheme and requires no additional circuitry.
Key Features
2Mbits organized as a 64k x 40 memory
6 years minimum data retention in the absence of external power
Nonvolatile circuitry transparent to and independent of host system
Automatic write protection circuitry safeguards against data loss
Battery monitor checks remaining capacity daily
Fast access time of 70ns
Operating VCC range of 3.0V to 3.6V
Employs popular JEDEC standard 72-position SIMM connector
* 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.
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