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Description

The M48Z128/Y/V ZEROPOWER? RAM is a 128 Kbit x 8 non-volatile static RAM organized as131,072 words by 8 bits. The device combines an internal lithium battery, a CMOS SRAM and a control circuit in a plastic, 32-pin DIP module to provide a highly integrated batterybacked memory solution.

Features

¡ö Integrated, ultra low power SRAM, power-fail

control circuit, and battery

¡ö Conventional SRAM operation; unlimited

WRITE cycles

¡ö 10 years of data retention in the absence of

power

¡ö Battery internally isolated until power is first

applied

¡ö Automatic power-fail chip deselect and WRITE

protection

¡ö WRITE protect voltages:

(VPFD = power-fail deselect voltage)

¨C M48Z128: VCC = 4.75 to 5.5 V

4.5 V ¡Ü VPFD ¡Ü 4.75 V

¨C M48Z128Y: VCC = 4.5 to 5.5 V

4.2 V ¡Ü VPFD ¡Ü 4.5 V

¨C M48Z128V: VCC = 3.0 to 3.6 V

2.8 V ¡Ü VPFD ¡Ü 3.0 V

(contact ST sales office for availability)

¡ö Pin and function compatible with JEDEC

standard 128 K x 8 SRAMs

¡ö RoHS compliant

¨C Lead-free second level interconnect