EM564081 sram equivalent, 512k x 8 low power sram.
* Single power supply voltage of 2.3V to 3.6V
* Power down features using CE1# and CE2
* Low power dissipation
* Data retention supply voltage: 1.0V to 3..
where high speed, low power and battery backup are required. And, with a guaranteed operating range from -40°C to 85°C, .
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