Does the Portable assert that Standby signal that you mentioned? It may not be worth the power savings, but the SRAM can maintain contents on 1V or something like that (mentioned in the datasheet). It would require another voltage regulator and a three more CPLD pins and maybe a couple of switching transistors, but you could set the thing up to supply 1V to the RAM when the Standby signal is asserted. That would reduce the power consumption while the machine is off. Might also need a largish capacitor to smooth over the transition between power supplies.
Post #175 by trag
| Source Forum | 68kMLA |
|---|---|
| Category | Hardware |
| Post Date | Tue, 11 Nov 2014 - 05:45 |
| Original URL | https://68kmla.org/bb/threads/designing-a-portable-ram-card.314/ |
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