STK12C68 (SMD5962-94599)
SYMBOLS
NO.
Standard
33
34
35
36
37
t
AVAV
t
AVEL
t
ELEH
t
ELAX
t
RECALL
Alternate
t
RC
t
AS
t
CW
PARAMETER
SOFTWARE-CONTROLLED
STORE/RECALL
CYCLE
v
STK12C68-25
MIN
STORE/RECALL
Initiation Cycle
Time
Address Set-up Time
Clock Pulse Width
Address Hold Time
RECALL
Duration
25
0
20
20
20
MAX
STK12C68-35
MIN
35
0
25
20
20
MAX
MIN
45
0
30
20
20
(V
CC
= 5.0V
±
10%)
e
STK12C68-45
MAX
STK12C68-55
UNITS NOTES
MIN
55
0
30
20
20
MAX
ns
ns
ns
ns
μs
p
u
u
u
Note u: The software sequence is clocked with E controlled READs.
Note v: The six consecutive addresses must be in the order listed in the Hardware Mode Selection Table: (0000, 1555, 0AAA, 1FFF, 10F0, 0F0F) for a
STORE
cycle or (0000, 1555, 0AAA, 1FFF, 10F0, 0F0E) for a
RECALL
cycle. W must be high during all six consecutive cycles.
SOFTWARE
STORE/RECALL
CYCLE:
E Controlled
v
t
AVAV
ADDRESS
34
ADDRESS #1
33
t
AVAV
ADDRESS #6
33
t
AVEL
E
t
ELEH
35
t
ELAX
t
STORE
DQ (DATA OUT)
DATA VALID
DATA VALID
28
37
/
t
RECALL
36
HIGH IMPEDANCE
Document Control #ML0008 Rev 0.7
February 2007
8
SIMTEK [ SIMTEK CORPORATION ]
