Cypress STK14C88-5 AutoStore or Power Up RECALL, Switching Waveforms, Page 11 of, tRESTORE, tHLHZ

STK14C88-5

AutoStore or Power Up RECALL

Parameter

Alt

Description

STK14C88-5

Unit

Min

Max

t

[15]

tRESTORE

Power up RECALL Duration

550

s

HRECALL

μ

t

STORE

[16]

tHLHZ

STORE Cycle Duration

10

ms

t

[16]

tHLQZ , tBLQZ

Time Allowed to Complete SRAM Cycle

1

s

DELAY

μ

VSWITCH

Low Voltage Trigger Level

4.0

4.5

V

VRESET

Low Voltage Reset Level

3.6

V

tVCCRISE

VCC Rise Time

150

μs

t

VSBL

[13]

Low Voltage Trigger (VSWITCH) to

HSB

low

300

ns

Switching Waveforms

Figure 12. 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: 001-51038 Rev. ** Page 11 of 17

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