MB81P643287 Datasheet, PDF (20/65 Pages) Fujitsu Component Limited. – 8 x 256K x 32 BIT, FCRAMTM CORE BASED DOUBLE DATA RATE SDRAM

MB81P643287-50/-60
Fig. 2 - STATE DIAGRAM (Simplified for Single Bank Operation)
MODE
REGISTER
SET
MRS
PDEX
PDEN
POWER
DOWN
IDLE
SELF
SELFX
REF
SELF-
REFRESH
AUTO
REFRESH
BANK
ACTIVE
BST
WRIT
WRIT
READ
READ
WRITE
WRITA
WRIT
READA
READ
READ
WRITA
READA
WRITA
READA
WRITE
WITH AUTO
PRECHARGE
PRE or
PALL
PRE or
PALL
READ WITH
AUTO
PRECHARGE
POWER
ON
PDEX and 8 PRE (or 1 PALL)
PRECHARGE
POWER
APPLIED
with PDEN
20
DEFINITION OF ALLOWS
Manual
Input
Automatic
Sequence