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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.

■ INTEGRATED ULTRA LOW POWER SRAM,

POWER-FAIL CONTROL CIRCUIT and

BATTERY

■ UNLIMITED WRITE CYCLES

■ READ CYCLE TIME EQUALS WRITE CYCLE

TIME

■ AUTOMATIC POWER-FAIL CHIP DESELECT and

WRITE PROTECTION

■ WRITE PROTECT VOLTAGES

(VPFD = Power-fail Deselect Voltage):

– M48Z08: 4.50V ≤ VPFD ≤ 4.75V

– M48Z18: 4.20V ≤ VPFD ≤ 4.50V

■ 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 the

DS1225 and JEDEC STANDARD 8K x 8

SRAMs