AutoStore or Power Up RECALL
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t |
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| [13] |
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| tRESTORE |
| Power up RECALL Duration |
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| 550 |
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| HRECALL |
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| μ | |||||
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t | STORE | [14, 15, 16] | tHLHZ |
| STORE Cycle Duration |
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| 10 |
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t |
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| tHLQZ , tBLQZ |
| Time Allowed to Complete SRAM Cycle | 1 |
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| DELAY |
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VSWITCH |
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| Low Voltage Trigger Level | 4.0 |
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VRESET |
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| Low Voltage Reset Level |
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| 3.9 |
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tVCCRISE |
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| VCC Rise Time | 150 |
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t | VSBL | [11] |
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| Low Voltage Trigger (VSWITCH) to | HSB | Low |
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| 300 |
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Switching Waveform |
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| Figure 12. AutoStore/Power Up RECALL |
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WE
Notes
13.tHRECALL starts from the time VCC rises above VSWITCH.
14.CE and OE low for output behavior.
15.CE and OE low and WE high for output behavior.
16.HSB is asserted low for 1us when VCAP drops through VSWITCH. If an SRAM Write has not taken place since the last nonvolatile cycle, HSB is released and no store takes place.
Document Number: | Page 11 of 18 |
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