msm548263 Oki Semiconductor, msm548263 Datasheet - Page 13

• Manufacturer Part Number: msm548263
• Description: Msm548263256k X 8 Multiport Dram
• Manufacturer: Oki Semiconductor

¡ Semiconductor
WRITE MASK DATA: "Low" = Mask, "High" = No Mask
Code
RWM
BWM
FWM
LMR
LCR
RW
BW
DQ1 - 4
DSF
DQ1
DQ2
DQ3
DQ4
A
0
0
1
0
0
1
1
RAS Falling Edge
WE
C
0
0
0
1
1
1
1
Write Mask
Write Mask
Write Mask
DQ
D
X
X
X
X
Column 0 (A0 = 0, A1 = 0)
Column 1 (A0 = 1, A1 = 0)
Column 2 (A0 = 0, A1 = 1)
Column 3 (A0 = 1, A1 = 1)
Column Mask Data
DSF
B
0
1
X
0
1
0
1
Write Cycle Function Table
CAS Falling Edge
Column Mask Data
Write Mask Data
Column Mask
Column Mask
Color Data
Valid Data
Valid Data
DQ
E
X
Masked Write (New/Old)
Masked Block Write (New/Old)
Masked Flash Write (New/Old)
Normal Write
Block Write
Load Mask Register
Load Color Register
Low: Mask
High: No Mask
Function
MSM548263
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