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DESCRIPTION

The M48Z08/18 ZEROPOWER? RAM is an 8K x 8 non-volatile static RAM which is pin and functional compatible with the DS1225. The monolithic chip is available in two special packages to provide a highly integrated battery backed-up memory solution.

¡ö INTEGRATED ULTRA LOW POWER SRAM,

POWER-FAIL CONTROL CIRCUIT and

BATTERY

¡ö UNLIMITED WRITE CYCLES

¡ö READ CYCLE TIME EQUALS WRITE CYCLE

TIME

¡ö AUTOMATIC POWER-FAIL CHIP DESELECT and

WRITE PROTECTION

¡ö WRITE PROTECT VOLTAGES

(VPFD = Power-fail Deselect Voltage):

¨C M48Z08: 4.50V ¡Ü VPFD ¡Ü 4.75V

¨C M48Z18: 4.20V ¡Ü VPFD ¡Ü 4.50V

¡ö SELF-CONTAINED BATTERY in the CAPHAT

DIP PACKAGE

¡ö PACKAGING INCLUDES a 28 LEAD SOIC

and SNAPHAT? TOP (to be Ordered

Separately)

¡ö SOIC PACKAGE PROVIDES DIRECT

CONNECTION for a SNAPHAT TOP which

CONTAINS the BATTERY

¡ö PIN and FUNCTION COMPATIBLE with the

DS1225 and JEDEC STANDARD 8K x 8

SRAMs