EtronTech
EM6A9160
8Mx16 DDR SDRAM
2) After power-up, No-Operation of 200 µ−seconds minimum is required.
3) Start clock and keep CKE “HIGH” to maintain either No-Operation or Device Deselect at the input.
4) Issue EMRS – enable DLL.
5) Issue MRS – reset DLL and set device to idle with bit A8 (An additional 200 cycles min of clock are
needed for DLL lock)
6) Precharge all banks of the device.
7) Two or more Auto Refresh commands.
8) Issue MRS – Initialize device operation.
15
Rev. 1.4
May 2006