STK12C68 Simtek, STK12C68 Datasheet - Page 7

• Manufacturer Part Number: STK12C68
• Description: 8Kx8 AutoStore nvSRAM
• Manufacturer: Simtek

Document Control #ML0008 Rev 0.7
AutoStore / POWER-UP RECALL
Note s: t
Note t:
AutoStore / POWER-UP RECALL
POWER-UP RECALL
NO.
27
28
29
30
31
32
DQ (DATA OUT)
February 2007
HSB is asserted low for 1
will be released and no STORE will take place.
AutoStore
RESTORE
V
V
Standard
t
t
t
t
V
V
SWITCH
RESTORE
STORE
VSBL
DELAY
31
32
RESET
SWITCH
RESET
HSB
TM
W
starts from the time V
V
SYMBOLS
CC
POWER-UP
Alternate
t
t
RECALL
t
HLHZ
BLQZ
RESTORE
μs
27
when V
CC
rises above V
(NO SRAM WRITES)
CAP
Power-up RECALL Duration
STORE Cycle Duration
Low Voltage Trigger (V
Time Allowed to Complete SRAM Cycle
Low Voltage Trigger Level
Low Voltage Reset Level
(V
BELOW V
CC
BROWN OUT
drops through V
NO RECALL
NO STORE
DID NOT GO
SWITCH
RESET
.
)
SWITCH
SWITCH
7
PARAMETER
. If an SRAM WRITE has not taken place since the last nonvolatile cycle, HSB
) to HSB Low
(V
BELOW V
CC
BROWN OUT
NO RECALL
t
VSBL
AutoStore
29
DID NOT GO
t
DELAY
30
RESET
STK12C68 (SMD5962-94599)
)
ABOVE V
RECALL WHEN
V
(V
BROWN OUT
CC
t
MIN
4.0
STORE
AutoStore
STK12C68
1
CC
28
RETURNS
= 5.0V ± 10%)
SWITCH
MAX
550
300
4.5
3.9
10
UNITS NOTES
ms
μs
ns
μs
V
V
p, q, t
p
s
l
e