Cypress Semiconductor STK14C88-5 Manual do Utilizador descarregar pdf (Página 12)

STK14C88-5

Document Number: 001-51038 Rev. *B Page 12 of 18

AutoStore or Power Up RECALL

Parameter Alt Description

STK14C88-5

Unit

Min Max

HRECALL

[17]

RESTORE

Power up RECALL duration – 550 s

STORE

[18]

HLHZ

STORE cycle duration – 10 ms

DELAY

[18]

HLQZ ,

BLQZ

Time allowed to complete SRAM cycle 1 – s

SWITCH

Low voltage trigger level 4.0 4.5 V

RESET

Low voltage reset level – 3.6 V

VCCRISE

rise time 150 – s

VSBL

[19]

Low voltage trigger (V

SWITCH

) to HSB low – 300 ns

Switching Waveforms

Figure 12. AutoStore/Power Up RECALL

Notes

17. t

HRECALL

starts from the time V

rises above V

SWITCH

18. CE

and OE low and WE high for output behavior.

19. HSB

is asserted low for 1 s when V

CAP

drops through V

SWITCH

. If an SRAM WRITE has not taken place since the last nonvolatile cycle, HSB is released and no store

takes place.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18

STK14C88-5 1
HRECALL 12
Units of Measure 17
Products 18
PSoC Solutions 18

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