Cypress CY14B256L Manual do Utilizador descarregar pdf (Página 11)

CY14B256L

Document Number: 001-06422 Rev. *H Page 11 of 18

AutoStore or Power Up RECALL

Parameter Alt Description

CY14B256L

Unit

Min Max

HRECALL

[12]

RESTORE

Power up RECALL Duration 20 ms

STORE

[13, 14]

HLHZ

STORE Cycle Duration 12.5 ms

SWITCH

Low Voltage Trigger Level 2.65 V

VCCRISE

Rise Time 150

Switching Waveforms

Figure 9. 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

Note Read and Write cycles are ignored during STORE, RECALL, and while Vcc is below V

SWITCH

Notes

12. t

HRECALL

starts from the time V

rises above V

SWITCH

13. If an SRAM WRITE has not taken place since the last nonvolatile cycle, no STORE will take place.

14. Industrial grade devices requires 15 ms max.

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256 Kbit (32K x 8) nvSRAM 1
CY14B256L 10
HRECALL 11
Products 18
PSoC Solutions 18

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