2 Nov
2018
2 Nov
'18
1:13 a.m.
On Sat, 13 Oct 2018 at 02:11, Michael Mrozek EvilDragon@openpandora.org wrote:
But our chip also supports the (optional) feature "Auto Self- Refresh".
How do you know that? It's not mentioned in feature list of our RAM's datasheet.
Well, it says on page 36 of the datasheet: " Auto Self-Refresh (ASR): set MR2 A6 = 0B to disable or 1B to enable feature"
That bit doesn't mean what you think it does. It means that when in self-refresh, the RAM will automatically increase its refresh rate when it detects it is operating at extended temperatures (85͏°C - 95͏°C).
You can find an overview of all JEDEC-defined MR bits in the MR sheet of this spreadsheet of mine: https://docs.google.com/spreadsheets/d/13UBY1PXElPrd8bldaBXN-_bWHXSzUKWU8Lmy...
Matthijs