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MSM5416282数据手册封面

MSM5416282 Datasheet

  • MSM5416282

  • 262,144-Word x 16-Bit Multiport DRAM

  • 368.06KB

  • OKI

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隆 Semiconductor
MSM5416282
OPERATION MODES
Table-1 shows the function truth table for a listing of all available RAM ports, and transfer
operations of the MSM5416282.
The RAM port and data transfer operations are determined by the state of
CAS, TRG, WEL, WEU
and DSF at the falling edge of
RAS,
and by the level of DSF at the falling edge of
CAS.
Table-1. Function Truth Table
RAS脴
Code
CAS脴
Address
W/IO
CAS
/WE脴
Write
Mask
鈥?/div>
鈥?/div>
Yes
Yes
鈥?/div>
鈥?/div>
Yes
Yes
Yes
No
No
鈥?/div>
Color
Register
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Use
Use
鈥?/div>
Use
Load
CAS TRG WE
DSF DSF
RAS脴 CAS脴 RAS脴
Function
CBR
ROR
MWT
MSWT
RT
SRT
RWM
BWM
FWM
RW
BW
LCR
0
1
1
1
1
1
1
1
1
1
1
1
*
1
0
0
0
0
1
1
1
1
1
1
*
*
0
0
1
1
0
0
0
1
1
1
*
0
0
1
0
1
0
0
1
0
0
1
鈥?/div>
*
*
鈥?/div>
*
*
*
鈥?/div>
*
*
*
*
CBR Refresh
RAS
Only Refresh
Masked Write Transfer
Masked Split
Write Transfer
Read Transfer
Split Read Transfer
Read/Write
(Mask)
Masked Block Write
Masked Flash Write
Read/Write
(No Mask)
Block Write
(No Mask)
Load Color Register
鈥?Row
*
*
*
*
0
1
*
0
1
1
Row TAP WM1
Row TAP WM1
Row TAP
Row TAP
*
*
Row
Column
WM1
Din,Dout
Row
Row
Column
A3c - 8c
WM1
Column
Select
*
WM1 鈥?/div>
*
*
*
Din,Dout
Row
Column
Row
Row
Column
A3c - 8c
Column
Select
*
Color
Data
If the DSF is "high" at the falling edge of
RAS,
special functions such as split transfer, flash write,
load color register can be invoked.
If the DSF is "low" at the falling edge of
RAS
and "high" at the falling edge of
CAS,
the block write
feature can be invoked.
29/37

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