Cypress Semiconductor STK14C88-3 Instrukcja Użytkownika Pobierz pdf (Strona 12)

STK14C88-3

Document Number: 001-50592 Rev. *A Page 12 of 17

AutoStore or Power Up RECALL

Parameter Alt Description

STK14C88-3

Unit

Min Max

HRECALL

[15]

RESTORE

Power up RECALL Duration 550 μs

STORE

[16, 17]

HLHZ

STORE Cycle Duration 10 ms

VSBL

[16]

Low Voltage Trigger (V

SWITCH

) to HSB low 300 ns

RESET

Low Voltage Reset Level 2.4 V

SWITCH

Low Voltage Trigger Level 2.7 2.95 V

DELAY

[16]

BLQZ

Time Allowed to Complete SRAM Cycle 1 μs

Switching Waveforms

Figure 11. AutoStore/Power Up RECALL

Notes

15. t

HRECALL

starts from the time V

rises above V

SWITCH

16. CE

and OE low and WE high for output behavior.

17. HSB

is asserted low for 1us when V

CAP

drops through V

SWITCH

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

store will take place.

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