STK25C48
AutoStore™/POWER-UP RECALL
SYMBOLS
NO.
Standard
22
23
24
25
26
t
RESTORE
t
STORE
t
DELAY
V
SWITCH
V
RESET
Power-up
RECALL
Duration
STORE
Cycle Duration
Time Allowed to Complete SRAM Cycle
Low Voltage Trigger Level
Low Voltage Reset Level
1
4.0
4.5
3.6
PARAMETER
MIN
MAX
550
10
μs
ms
μs
V
V
e
k
g
g
(V
CC
= 5.0V ± 10%)
STK25C48
UNITS
NOTES
Note k: t
RESTORE
starts from the time V
CC
rises above V
SWITCH
.
AutoStore™/POWER-UP RECALL
V
CC
5V
25
V
SWITCH
26
V
RESET
AutoStore™
23
t
STORE
POWER-UP
RECALL
22
t
RESTORE
W
DQ (DATA OUT)
24
t
DELAY
POWER-UP
RECALL
BROWN OUT
NO
STORE
DUE TO
NO SRAM WRITES
NO
RECALL
(V
CC
DID NOT GO
BELOW V
RESET
)
BROWN OUT
AutoStore™
NO
RECALL
(V
CC
DID NOT GO
BELOW V
RESET
)
BROWN OUT
AutoStore™
RECALL
WHEN
V
CC
RETURNS
ABOVE V
SWITCH
March 2006
5
Document Control # ML0005 rev 0.2