STK14C88
AutoStore™/POWER-UP RECALL
(VCC = 5.0V ± 10%)e
SYMBOLS
NO.
STK14C88
PARAMETER
UNITS NOTES
Standard
tRESTORE
tSTORE
Alternate
MIN
MAX
550
10
27
28
29
30
31
32
Power-up RECALL Duration
STORE Cycle Duration
μs
ms
ns
μs
V
p
n, q
l
tHLHZ
tVSBL
Low Voltage Trigger (VSWITCH) to HSB Low
Time Allowed to Complete SRAM Cycle
Low Voltage Trigger Level
300
tDELAY
tBLQZ
1
n
VSWITCH
VRESET
4.0
4.5
3.6
Low Voltage Reset Level
V
Note p: tRESTORE starts from the time VCC rises above VSWITCH
.
Note q: HSB is asserted low for 1μs when VCAP drops through VSWITCH. If an SRAM WRITE has not taken place since the last nonvolatile cycle, HSB
will be released and no STORE will take place.
AutoStore™/POWER-UP RECALL
VCC
31
VSWITCH
32
VRESET
AutoStore
POWER-UP RECALL
29
tVSBL
28
tSTORE
27
tRESTORE
HSB
30
tDELAY
W
DQ (DATA OUT)
POWER-UP
RECALL
BROWN OUT
NO STORE
BROWN OUT
AutoStore
BROWN OUT
AutoStore
(NO SRAM WRITES)
NO RECALL
NO RECALL
RECALL WHEN
(V DID NOT GO
(V DID NOT GO
V
RETURNS
CC
CC
CC
BELOW V
)
BELOW V
)
ABOVE V
SWITCH
RESET
RESET
Rev 2.0
Document Control #ML0014
Feb, 2008
7
SIMTEK [ SIMTEK CORPORATION ]
