
Document Number: 001-51038 Rev. *B Page 12 of 18
AutoStore or Power Up RECALL
Parameter Alt Description
STK14C88-5
Unit
Min Max
t
HRECALL
[17]
t
RESTORE
Power up RECALL duration – 550 s
t
STORE
[18]
t
HLHZ
STORE cycle duration – 10 ms
t
DELAY
[18]
t
HLQZ ,
t
BLQZ
Time allowed to complete SRAM cycle 1 – s
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 – s
t
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
CC
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.
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