CY14B104L, CY14B104N
Software Controlled STORE/RECALL Cycle
In the following table, the software controlled STORE/RECALL cycle parameters are listed.[25, 26]
Parameters | Description |
| 20 ns |
| 25 ns |
| 45 ns | Unit | |
Min | Max | Min | Max | Min | Max | ||||
|
|
| |||||||
tRC | STORE/RECALL Initiation Cycle Time | 20 |
| 25 |
| 45 |
| ns | |
tSA | Address Setup Time | 0 |
| 0 |
| 0 |
| ns | |
tCW | Clock Pulse Width | 15 |
| 20 |
| 30 |
| ns | |
tHA | Address Hold Time | 0 |
| 0 |
| 0 |
| ns | |
tRECALL | RECALL Duration |
| 200 |
| 200 |
| 200 | μs | |
tSS [27, 28] | Soft Sequence Processing Time |
| 100 |
| 100 |
| 100 | μs |
Switching Waveforms
Figure 12. CE and OE Controlled Software STORE/RECALL Cycle[26]
| W5& | W5& |
|
$GGUHVV | $GGUHVV | $GGUHVV |
|
W6$ | W&: | W+$ |
|
W |
| ||
|
| &: |
|
&( | W+$ | W66 |
|
W6$ |
| ||
W+$ |
| ||
W+$ |
| ||
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| ||
2( |
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|
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| W'(/$< | W+++' |
+6% 6725(RQO\ | W+=&( |
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W/=&( |
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| W/=+6% |
'4 '$7$ |
|
| +LJK |
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| ,PSHGDQFH | |
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| |
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| W6725( | W5(&$// |
5:, |
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Figure 13. Autostore Enable / Disable Cycle
| W5& | W5& | |
$GGUHVV | $GGUHVV | $GGUHVV | |
W6$ | W&: | W&: | |
| |||
&( | W+$ | W+$ | |
W6$ | |||
W+$ | |||
| W | ||
|
| +$ | |
2( |
|
| |
| W+=&( | W66 | |
W/=&( | W | ||
|
| '(/$< | |
'4 '$7$ |
|
| |
5:, |
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Notes
25.The software sequence is clocked with CE controlled or OE controlled reads.
26.The six consecutive addresses must be read in the order listed in Table 1 on page 5. WE must be HIGH during all six consecutive cycles. After the sixth address read cycle, no further read or write operation must be performed for tSS duration. If these conditions are not met, the software sequence is aborted.
Document #: | Page 13 of 25 |
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