Description
The M48Z58/Y ZEROPOWER® RAM is an 8 Kbit x 8 non-volatile static RAM that integrates power-fail deselect circuitry and battery control logic on a single die. The monolithic chip is available in two special packages to provide a highly integrated battery-backed memory solution.

Features
■ Integrated, ultra low power SRAM, power-fail control circuit, and battery
■ READ cycle time equals WRITE cycle time
■ Automatic power-fail chip deselect and WRITE protection
■ WRITE protect voltages: (VPFD = power-fail deselect voltage)
    – M48Z58: VCC = 4.75 to 5.5 V; 4.5 V ≤ VPFD ≤ 4.75 V
    – M48Z58Y: VCC = 4.5 to 5.5 V; 4.2 V ≤ VPFD ≤ 4.5 V
■ Self-contained battery in the CAPHAT™ DIP package
■ Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered separately)
■ SOIC package provides direct connection for a SNAPHAT® top which contains the battery
■ Pin and function compatible with JEDEC standard 8 Kbit x 8 SRAMs
■ RoHS compliant
     – Lead-free second level interconnect