PRELIMINARY
CY14B108L, CY14B108N
Document #: 001-45523 Rev. *B
Page 14 of 24
Software Controlled STORE/RECALL Cycle
In the following table, the software controlled STORE and RECALL cycle parameters are listed.
[22, 23]
Parameters
Description
20 ns
25 ns
45 ns
Unit
Min
Max
Min
Max
Min
Max
t
RC
STORE/RECALL Initiation Cycle Time
20
25
45
ns
t
SA
Address Setup Time
0
0
0
ns
t
CW
Clock Pulse Width
15
20
30
ns
t
HA
Address Hold Time
0
0
0
ns
t
RECALL
RECALL Duration
200
200
200
μ
s
Switching Waveforms
Figure 11. CE and OE Controlled Software STORE/RECALL Cycle
[23]
Figure 12. Autostore Enable/Disable Cycle
t
RC
t
RC
t
SA
t
CW
t
CW
t
SA
t
HA
t
LZCE
t
HZCE
t
HA
t
HA
t
HA
t
DELAY
t
STORE
/t
RECALL
t
HHHD
t
LZHSB
High Impedance
Address #1
Address #6
Address
CE
OE
HSB (STORE only)
DQ (DATA)
RWI
t
RC
t
RC
t
SA
t
CW
t
CW
t
SA
t
HA
t
LZCE
t
HZCE
t
HA
t
HA
t
HA
t
DELAY
Address #1
Address #6
Address
CE
OE
DQ (DATA)
t
SS
Notes
22. The software sequence is clocked with CE controlled or OE controlled reads.
23. The six consecutive addresses must be read in the order listed in
Table 2
on page 6. WE must be HIGH during all six consecutive cycles.
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