AutoStore™/POWER-UP RECALL
SYMBOLS
NO.
Standard
PARAMETER
22
tRESTORE
23
tSTORE
24
tDELAY
25
VSWITCH
26
VRESET
Power-up RECALL Duration
STORE Cycle Duration
Time Allowed to Complete SRAM Cycle
Low Voltage Trigger Level
Low Voltage Reset Level
Note k: tRESTORE starts from the time VCC rises above VSWITCH.
AutoStore™/POWER-UP RECALL
VCC
5V
25
VSWITCH
26
VRESET
AutoStore™
POWER-UP RECALL
W
22
tRESTORE
DQ (DATA OUT)
24
tDELAY
STK25CA8
(VCC = 5.0V 10%)
STK25CA8
MIN MAX
550
10
1
4.0
4.5
UNITS NOTES
µs
k
ms
g
µs
g
V
3.9
V
23
tSTORE
POWER-UP
BROWN OUT
RECALL NO STORE DUE TO
NO SRAM WRITES
NO RECALL
(VCC DID NOT GO
BELOW VRESET)
BROWN OUT
AutoStore™
NO RECALL
(VCC DID NOT GO
BELOW VRESET)
BROWN OUT
AutoStore™
RECALL WHEN
VCC RETURNS
ABOVE VSWITCH
August 1999
6-5