Cypress CY14B256K Instrukcja Użytkownika Pobierz pdf (Strona 19)

CY14B256K

Document Number: 001-06431 Rev. *H Page 19 of 28

AutoStore or Power Up RECALL

Parameter Description

CY14B256K

Unit

Min Max

HRECALL

[17]

Power Up RECALL Duration 40 ms

STORE

[18, 19]

STORE Cycle Duration Commercial 12.5 ms

Industrial 15 ms

SWITCH

Low Voltage Trigger Level 2.65 V

VCCRISE

VCC Rise Time 150 μs

Figure 12. AutoStore/Power Up RECALL

SWITCH

STORE

HRECALL

AutoStore

POWER-UP RECALL

Read & Write Inhibited

STORE occurs only

if a SRAM write

has happened

No STORE occurs

without atleast one

SRAM write

VCCRISE

Notes

17. t

HRECALL

starts from the time V

rises above V

SWITCH

18. If an SRAM Write does not taken place since the last nonvolatile cycle, no STORE takes place.

19. Industrial Grade Devices require 15 ms Max.

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Cypress CY14B256K Instrukcja Użytkownika Strona 19