K4C561638C-TCD4000 Datasheet, PDF (24/42 Pages) Samsung semiconductor – 256Mb Network-DRAM

K4C5608/1638C
256Mb Network-DRAM
State Diagram
Self
Refresh
SELFX
(PD = H)
PDEX
(PD = H)
Power
Down
PD = L
PD = H
Standby
(Idle)
PDEN
(PD = L)
Auto-
Refresh
WRA
RDA
Mode
Register
REF
MRS
Active
(Restore)
Active
LAL
Write
(Buffer)
LAL
Read
Command Input
Automatic Return
The second command at Active
state must be issued 1clock after
RDA or WRA command input
- 24 -
REV. 0.7 Aug. 2003