K4H280438B-TCA0 Datasheet, PDF (37/53 Pages) Samsung semiconductor – 128Mb DDR SDRAM

128Mb DDR SDRAM
Current State
RE-
FRESHING
MODE
REGISTER
SETTING
CS RAS CAS WE
Address
Command
L H H LX
Burst Stop
L H L X BA, CA, A10
READ/WRITE
L L H H BA, RA
Active
L L H L BA, A10
L L L HX
PRE/PREA
Refresh
L L L L Op-Code, Mode-Add MRS
L H H LX
L H L X BA, CA, A10
Burst Stop
READ/WRITE
L L H H BA, RA
Active
L L H L BA, A10
PRE/PREA
L L L HX
Refresh
L L L L Op-Code, Mode-Add MRS
Table 9-4. Functional truth table
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
ILLEGAL
Action
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REV. 1.0 November. 2. 2000