Description
The M48Z512A/Y/V ZEROPOWER® RAM is a non-volatile, 4,194,304-bit static RAM organized as 524,288 words by 8 bits. The devices combine an internal lithium battery, a CMOS SRAM and a control circuit in a plastic, 32-pin DIP module.

Features
■ Integrated, ultra low power SRAM, power-fail control circuit, and battery
■ Conventional SRAM operation; unlimited WRITE cycles
■ 10 years of data retention in the absence of power
■ Automatic power-fail chip deselect and WRITE protection
■ Two WRITE protect voltages:
   (VPFD = power-fail deselect voltage)
   – M48Z512A: VCC = 4.75 to 5.5 V;
      4.5 V ≤ VPFD ≤ 4.75 V
   – M48Z512AY: VCC = 4.5 to 5.5 V;
      4.2 V ≤ VPFD ≤ 4.5 V
   – M48Z512AV: VCC = 3.0 to 3.6 V;
      2.8 V ≤ VPFD ≤ 3.0 V
■ Battery internally isolated until power is applied
■ Pin and function compatible with JEDEC standard 512 K x 8 SRAMs
■ PMDIP32 is an ECOPACK® package
■ RoHS compliant
   – Lead-free second level interconnect