HY5DU28422BT Datasheet, PDF (15/33 Pages) Hynix Semiconductor – 128M-S DDR SDRAM

SIMPLIFIED STATE DIAGRAM
HY5DU28422B(L)T
HY5DU28822B(L)T
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
AUTOPRE-
CHARGE
READAP
WRITEAP
READ
READ
PRE(PALL)
PRE-
CHARGE
WRITE
PRE(PALL)
POWER-UP
POWER APPLIED
Command Input
Automatic Sequence
Rev. 0.3/May. 02
15