®
IS42S32400B
ISSI
STATE DIAGRAM
Self
Refresh
SELF
SELF exit
REF
Mode
Register
Set
MRS
CBR (Auto)
Refresh
IDLE
CKE
CKE
ACT
Power
Down
CKE
Active
Power
Down
Row
Active
CKE
BST
Write
BST
Read
Write
Read
Read
CKE
CKE
CKE
WRITE
SUSPEND
READ
SUSPEND
READ
WRITE
Write
CKE
CKE
CKE
READA
SUSPEND
WRITEA
SUSPEND
WRITEA
READA
CKE
CKE
Precharge
POWER
ON
Precharge
Automatic sequence
Manual Input
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
13
PRELIMINARYINFORMATION Rev. 00G
06/15/06