HY5DU56422DTP Datasheet, PDF (15/37 Pages) Hynix Semiconductor – 256M DDR SDRAM (268,435,456-bit CMOS Double Data Rate(DDR) Synchronous DRAM)

SIMPLIFIED STATE DIAGRAM
HY5DU56422D(L)TP
HY5DU56822D(L)TP
HY5DU561622D(L)TP
MODE
REGISTER
SET
MRS
PDEN
IDLE
POWER
DOWN
PDEX
ACT
POWER
DOWN
PDEN
PDEX
BANK
ACTIVE
SREF
SREX
AREF
SELF
REFRESH
AUTO
REFRESH
BST
WRITE
WRITE
READ
READAP
WRITEAP
WRITE
WITH
AUTOPRE-
CHARGE
READ
WITH READAP
AUTOPRE-
CHARGE _WRITEAP
READ
READ
PRE(PALL)
PRE-
CHARGE
WRITE
PRE(PALL)
POWER-UP
POWER APPLIED
Command Input
Automatic Sequence
Rev. 0.1 /May 2004
15