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K4H1G0438M-TCA0 Datasheet

  • K4H1G0438M-TCA0

  • 128Mb DDR SDRAM

  • 669.26KB

  • 53頁

  • SAMSUNG   SAMSUNG

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128Mb DDR SDRAM
Current State
WRITE
CS
L
L
RAS CAS
H
H
H
L
WE
L
H
X
Address
Command
Burst Stop
READ/READA
ILLEGAL
Action
BA, CA, A
10
Terminate Burst With DM=High,
Latch CA, Begin Read, Deter-
mine Auto-Precharge*3
L
L
L
L
L
READ with
AUTO
PRECHARGE
*6
(READA)
L
L
L
L
L
L
L
WRITE with
AUTO
RECHARGE
*7
(WRITEA)
L
L
L
L
L
L
L
H
L
L
L
L
H
H
H
L
L
L
L
H
H
H
L
L
L
L
L
H
H
L
L
H
L
L
H
H
L
L
H
L
L
H
H
L
L
L
H
L
H
L
L
H
L
H
L
H
L
L
H
L
H
L
H
L
BA, CA, A
10
BA, RA
BA, A
10
X
Op-Code, Mode-Add
X
BA, CA, A
10
BA, CA, A
10
BA, RA
BA, A
10
X
Op-Code, Mode-Add
X
BA, CA, A
10
BA, CA, A
10
BA, RA
BA, A
10
X
Terminate Burst, Latch CA,
WRITE/WRITEA Begin new Write, Determine
Auto-Precharge*3
Active
PRE/PREA
Refresh
MRS
Burst Stop
READ/READA
Bank Active/ILLEGAL*2
Terminate Burst With DM=High,
Precharge
ILLEGAL
ILLEGAL
ILLEGAL
*6
WRITE/WRITEA ILLEGAL
Active
PRE/PREA
Refresh
MRS
Burst Stop
READ/READA
*6
*6
ILLEGAL
ILLEGAL
ILLEGAL
*7
WRITE/WRITEA *7
Active
PRE/PREA
Refresh
*7
*7
ILLEGAL
ILLEGAL
Op-Code, Mode-Add MRS
Table 9-2. Functional truth table
- 35 -
REV. 1.0 November. 2. 2000

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