LG Semicon
GM72V66841CT/CLT
64M SDRAM Function State Diagram
SELF-
REFRESH
MRS
*1
MODE
REGISTER
SET
AUTO-
REFRESH
REFRESH
IDLE
IDLE
Power
DOWN
ACTIVE
Clock
SUSPEND
ROW
ACTIVE
BST
(on full page)
BST
(on full page)
Write
Read
CKE=L
CKE=L
READ
WRITE
SUSPEND
READ
SUSPEND
WRITE
READ
WRITE
CKE=H
CKE=H
READ
WITH AP
WRITE
WITH AP
CKE=L
CKE=L
WRITEA
SUSPEND
READA
WRITEA
READA
SUSPEND
CKE=H
CKE=H
PRE-
CHARGE
Power
APPLIED
Power
ON
Precharge
Automatic Transition after completion of command.
Transition resulting from command input.
Note: 1. After the auto-refresh operation, Precharge is performed automatically and enter the IDLE state.
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LG [ LG SEMICON CO.,LTD. ]
