enters the self-refresh state.
* If the command is a burst terminate (CA0-2 = HHL), the chip enters the deep power-down state. (A full reset sequence is required when leaving.)

The mode registers have been greatly expanded compared to conventional SDRAM, with an 8-bit address space, and the ability to read them back. Although smaller than a serial presence detect EEPROM, enough information is included to eliminate the need for one.

S2 devices smaller than 4 Gbit,

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