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參數(shù)資料
| 型號： | MSM548263 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 262,144-Word ×8-Bit Multiport DRAM(256k字×8位多端口動態(tài)RAM) |
| 中文描述： | 262,144字× 8位多端口內(nèi)存（256k字× 8位多端口動態(tài)RAM）的 |
| 文件頁數(shù)： | 30/40頁 |
| 文件大?。?/td> | 390K |
| 代理商： | MSM548263 |
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Semiconductor
MSM548263
30/40
OPERATION MODES
Table-1 shows the function truth table for a listing of all available RAM ports and transter
operation of MSM548263.
The RAM port and data transfer operations are determined by the state of
CAS
,
TRG
,
WE
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
Code
Address
CAS TRG WE
DSF DSF
RAS
CAS
/
WE
Write Pers.
WM
Color
0
*
1
0
—
*
*
*
*
—
Reset Reset
—
CBRR
CAS
Mask W.M.
RAS
W/IO
CAS
Register
Function
CBR Refresh
(Register Reset)
CBR Refresh
(Stop Register Set)
0
*
0
1
—
STOP
*
*
*
—
—
—
—
CBRS
0
*
1
1
—
*
*
*
*
—
—
—
—
CBRN
CBR Refresh (No Reset)
1
1
*
0
—
Row
—
*
—
—
—
—
—
ROR
RAS
Only Refresh
1
0
0
0
*
Row TAP WM1
*
Yes
No/ Load
Yes
—
MWT
Masked Write Transfer
1
0
0
1
*
Row TAP WM1
*
Yes
No/
Yes
—
MSWT
Masked Split
Write Transfer
1
0
1
0
*
Row TAP
*
*
—
—
—
—
RT
Read Transfer
1
0
1
1
*
Row TAP
*
*
—
—
—
—
SRT
Split Read Transfer
1
1
0
0
0
Row
Column
WM1
Din, Dout
Yes
No/
Yes
—
RWM
Read/Write
(New/Old Mask)
Masked Block Write
(New/Old)
Masked Flash Write
(New/Old)
Read/Write
(No Mask)
Block Write
(No Mask)
Load Mask Register
(Old Mask Set)
1
1
0
0
1
Row
Column
WM1
A2c - 8c
Yes
No/
Yes
Use
BWM
1
1
0
1
*
Row
*
WM1
—
Yes
No/
Yes
Use
FWM
1
1
1
0
0
Row
Column
*
Din, Dout
No
No
—
—
RW
1
1
1
0
1
Row
*
No
No
—
Use
BW
1
1
1
1
0
Row
*
*
—
Set
Load
—
LMR
1
1
1
1
1
Row
*
*
—
—
—
Load
LCR
Load Color Register
Column
A2c - 8c
Column
Select
Column
Select
Mask
Data
Color
Data
Use
Load
Use
Load
Use
Load
Use
Load
Use
Notes:
1. With CBRS and SAM operations use stop register
2. After LMR, RWM, BWM, FWM and MSWT, use old mask which can be reset by
CBRR.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM548263-60JS | 制造商:ROHM Semiconductor 功能描述: |
| MSM548263-60TS-K | 制造商:OK International 功能描述: |
| MSM54V12222A-30TS-K | 制造商:OKI Semiconductor 功能描述:FIELD/FRAME/LINE MEMORY, 44 Pin, Plastic, TSOP |
| MSM54V12222B-25JDR17 | 制造商:ROHM Semiconductor 功能描述: |
| MSM54V12222B-25JSDR1 | 制造商:ROHM Semiconductor 功能描述: |
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