Cypress manual AutoStore or Power Up Recall, Parameter Alt Description CY14E256L Unit Min Max

							CY14E256L
AutoStore or Power Up RECALL
Parameter	Alt	Description			CY14E256L			Unit
					Min	Max
tHRECALL [15]	tRESTORE	Power up RECALL Duration				550		μs
tSTORE [16]	tHLHZ	STORE Cycle Duration				10		ms
tDELAY [16]	tHLQZ , tBLQZ	Time Allowed to Complete SRAM Cycle			1			μs
VSWITCH		Low Voltage Trigger Level			4.0	4.5		V
VRESET		Low Voltage Reset Level				3.6		V
tVCCRISE		VCC Rise Time			150			μs
tVSBL[13]		Low Voltage Trigger (VSWITCH) to	HSB	low		300		ns

Switching Waveforms

Figure 11. AutoStore/Power Up RECALL

WE

Notes

15.tHRECALL starts from the time VCC rises above VSWITCH.

16.CE and OE low and WE high for output behavior.

17.HSB is asserted low for 1us when VCAP drops through VSWITCH. If an SRAM WRITE has not taken place since the last nonvolatile cycle, HSB is released and no store takes place.

Document Number: 001-06968 Rev. *F Page 11 of 18

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