Cypress CY14E256L - Manual (Page 11)

CY14E256L
Document Number: 001-06968 Rev. *F Page 11 of 18
AutoStore or Power Up RECALL
Parameter Alt Description
CY14E256L
Unit
Min Max
t
HRECALL
[15]
t
RESTORE
Power up RECALL Duration 550
μs
t
STORE
[16]
t
HLHZ
STORE Cycle Duration 10 ms
t
DELAY
[16]
t
HLQZ ,
t
BLQZ
Time Allowed to Complete SRAM Cycle 1
μs
V
SWITCH
Low Voltage Trigger Level 4.0 4.5 V
V
RESET
Low Voltage Reset Level 3.6 V
t
VCCRISE
V
CC
Rise Time 150
μs
t
VSBL
[13]
Low Voltage Trigger (V
SWITCH
) to HSB low 300 ns
Switching Waveforms
Figure 11. AutoStore/Power Up RECALL
WE
Notes
15. t
HRECALL
starts from the time V
CC
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 is released and no store
takes place.
[+] Feedback