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
STK1743
(VCC = 5.0V ± 10%)
STK1743
MIN MAX
UNITS NOTES
550
µs
k
10
ms
g
1
µs
g
4.0
4.5
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
March 1999
7-5