STK17T88_08 Datasheet, PDF (9/29 Pages) Simtek Corporation – 32K x 8 AutoStore nvSRAM with Real-Time Clock

SOFTWARE-CONTROLLED STORE/RECALL CYCLE^l,m
STK17T88
SYMBOLS
NO.
E Cont Alternate
PARAMETER
STK17T88-35 STK17T88-45
UNITS NOTES
MIN MAX MIN MAX
26
t_AVAV
t_RC
27
t_AVEL
t_AS
28
t_ELEH
t_CW
29
t_EHAX
30
t_RECALL
STORE / RECALL Initiation Cycle Time 25
45
ns
m
Address Set-up Time
0
0
ns
Clock Pulse Width
20
30
ns
Address Hold Time
1
1
ns
RECALL Duration
100
100 μs
note l: The software sequence is clocked on the falling edge of E controlled READs
note m: The six consecutive addresses must be read in the order listed in the Software STORE/RECALL Mode Selection Table. W must be high
during all six consecutive cycles.
SOFTWARE STORE/RECALL CYCLE: E CONTROLLED^m
26
t_AVAV
26
t_AVAV
ADDRESS
ADDRESS #1
ADDRESS #6
27
28
E
t_AVEL
t_ELEH
G
DQ (DATA)
29
t_EHAX
DATA VALID
23 _/ 30
t_STORE t_RECALL
HIGH IMPEDENCE
DATA VALID
Document Control #ML0024 Rev 2.0
9
Jan, 2008