HYB25L256160AC Datasheet, PDF (19/55 Pages) Infineon Technologies AG – 256-Mbit Mobile-RAM

3.5
Simplified State Diagram
HYB25L256160AC
256-Mbit Mobile-RAM
Functional Description
Power
applied
Power
On
DPDSX
Deep
Power
Down
Precharge
All
PREALL
DPDS
REFSX
Self
Refresh
Mode
Register
Set
MRS
REFS
Idle
REFA
CKEL
Auto
Refresh
Active
Power
Down
CKEH
ACT
CKEH
Precharge
Power
Down
Clock
Suspend
CKEL
WRITE ^CKEH
CKEL
WRITE
Row
BST
WRITE
Active
BST
READ
WRITEA
READA
WRITE
READ
READ
CKEL
Clock
Suspend
CKEH _READ
WRITEA
Clock
CKEL
Suspend
WRITE A
WRITEA ^CKEH
WRITEA
READ
A
PRE
PRE
PRE
READA
CKEL
Clock
READ A
Suspend
CKEH _READA
PRE
PREALL = Precharge All Banks
REFS = Enter Self Refresh
REFSX = Exit Self Refresh
REFA = Auto Refresh
DPDS = Enter Deep Power Down
DPDSX = Exit Deep Power Down
Precharge
CKEL = Enter Power Down
CKEH = Exit Power Down
READ = Read w/o Auto Precharge
READA = Read with Auto Precharge
WRITE = Write w/o Auto Precharge
WRITEA = Write with Auto Precharge
Automatic Sequence
Command Sequence
ACT = Active
PRE = Precharge
BST = Burst Terminate
MRS = Mode Register Set
Figure 3 Simplified State Diagram
Data Sheet
19
V1.1, 2003-04-16