STK14C88
b, f
AutoStore™/POWER-UP RECALL
(V = 5.0V ± 10%)
CC
SYMBOLS
NO.
STK14C88
PARAMETER
UNITS NOTES
Standard
Alternate
MIN
MAX
550
10
27
28
29
30
31
32
t
t
t
t
Power-up RECALL Duration
STORE Cycle Duration
µs
ms
ns
µs
V
t
r, u
m
r
RESTORE
STORE
VSBL
t
t
HLHZ
BLQZ
Low Voltage Trigger (V
) to HSB Low
300
SWITCH
Time Allowed to Complete SRAM Cycle
Low Voltage Trigger Level
1
DELAY
V
V
4.0
4.5
3.9
SWITCH
RESET
Low Voltage Reset Level
V
Note t: tRESTORE starts from the time VCC rises above VSWITCH
.
Note u: 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
V
CC
31
SWITCH
V
32
V
RESET
AutoStore™
POWER-UP RECALL
29
VSBL
28
STORE
27
RESTORE
t
t
t
HSB
30
DELAY
t
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
July 1999
5-26
SIMTEK [ SIMTEK CORPORATION ]
