K4H510438A-TCA0 SAMSUNG [Samsung semiconductor], K4H510438A-TCA0 Datasheet - Page 36

• Manufacturer Part Number: K4H510438A-TCA0
• Description: 128Mb DDR SDRAM
• Manufacturer: SAMSUNG [Samsung semiconductor]

128Mb DDR SDRAM
RECOVERING
(DURING tRP)
(DURING tWR
Current State
PRECHARG-
ACTIVATING
(FROM ROW
ACTIVE TO
OR tCDLR)
WRITE
tRCD)
ROW
ING
CS
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
RAS CAS
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
WE
Table 9-3. Functional truth table
H
H
H
H
H
H
H
L
X
L
L
L
X
L
L
L
L
L
L
X
BA, CA, A
BA, RA
BA, A
X
Op-Code, Mode-Add
X
BA, CA, A
BA, RA
BA, A
X
Op-Code, Mode-Add
X
BA, CA, A
BA, CA, A
BA, RA
BA, A
X
Op-Code, Mode-Add MRS
10
10
10
Address
- 36 -
10
10
10
10
Burst Stop
READ/WRITE
Active
PRE/PREA
Refresh
MRS
Burst Stop
READ/WRITE
Active
PRE/PREA
Refresh
MRS
Burst Stop
READ
WRITE
Active
PRE/PREA
Refresh
Command
REV. 1.0 November. 2. 2000
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
NOP*4(Idle after
ILLEGAL
ILLEGAL
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
ILLEGAL*2
ILLEGAL
ILLEGAL
ILLEGAL*2
ILLEGAL*2
WRITE
ILLEGAL*2
ILLEGAL*2
ILLEGAL
ILLEGAL
Action
t
RP
)