Description
The M48Z2M1Y/V ZEROPOWER® RAM is a non-volatile 16,777,216-bit, static RAM organized as 2,097,152 words by 8 bits. The device combines two internal lithium batteries, CMOS SRAMs and a control circuit in a plastic 36-pin DIP, long module.
   
Features
■ Integrated, ultra low power SRAM, power-fail
    control circuit, and batteries
■ Conventional SRAM operation; unlimited
    WRITE cycles
■ 10 years of data retention in the absence of
    power
■ Automatic power-fail chip deselect and WRITE
    protection
■ WRITE protect voltages
    (VPFD = power-fail deselect voltage):
    – M48Z2M1Y: VCC = 4.5 to 5.5 V;
        4.2 V ≤ VPFD ≤ 4.5 V
    – M48Z2M1V: VCC = 3.0 to 3.6 V;
        2.8 V ≤ VPFD ≤ 3.0 V
■ Batteries are internally isolated until power is
    applied
■ Pin and function compatible with JEDEC
    standard 2 Mb x 8 SRAMs
■ RoHS compliant
    – Lead-free second level interconnect