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參數(shù)資料
| 型號： | MS82V16520 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | 262,144-Word x 32-Bit x 2-Bank Synchronous Graphics RAM |
| 中文描述： | 262,144字× 32位× 2，銀行同步圖形RAM |
| 文件頁數(shù)： | 5/67頁 |
| 文件大?。?/td> | 846K |
| 代理商： | MS82V16520 |
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Semiconductor
MS82V16520
COMMAND OPERATION
Mode Register Set Command (
CS
,
RAS
,
CAS
,
WE
, DSF = "Low")
The MS82V16520 has the mode register that defines the operation mode "
CAS
Latency, Burst
Length, Burst Sequence". The mode register is composed of eleven bits of memories
corresponding to address inputs A0 - A9 and BA. The Mode Register Set command should be
executed just after the MS82V16520 is powered on. Before entering this command, all banks
must be precharged. Next command can be issued after t
RSC
.
Special Mode Register Set Command (
CS
,
RAS
,
CAS
,
WE
= "Low", DSF = "High")
The MS82V16520 has the 32-bit color register for block write operation and the 32-bit mask
register for write per bit operation. The Special Mode Register Set command performs loading
mask register or color register. When A5 is "high", The mask data presented on the DQ0 - DQ31
is latched into the mask register. When A6 is "high", The color data presented on the DQ0 - DQ31
is latched into the color register. The Special Mode Register Set command must be executed
before Masked Block Write and Write Per Bit operations. Next command can be issued after
t
RSC
.
Auto Refresh Command (
CS
,
RAS
,
CAS
, DSF = "Low",
WE
, CKE = "High")
The Auto Refresh command performs refresh automatically by the address counter. The refresh
operation must be performed 2048 times within 32 ms and the next command can be issued after
t
RC
from last Auto Refresh command. Before entering this command, all banks must be
precharged.
Self Refresh Entry/Exit Command (
CS
,
RAS
,
CAS
, DSF, CKE = "Low",
WE
= "High")
The self refresh operation continues after the Self Refresh Entry command is entered, with CKE
level left "low". This operation terminates by making CKE level "high". The self refresh
operation is performed automatically by the internal address counter on the MS82V16520 chip.
In self refresh mode, no external refresh control is required. Before entering self refresh mode,
all banks must be precharged. Next command can be issued after t
RC
.
Single Bank Precharge Command (
CS
,
RAS
,
WE
, DSF, A9 = "Low",
CAS
= "High")
The Single Bank Precharge command triggers bank precharge operation. Precharge bank is
selected by BA.
All Banks Precharge Command (
CS
,
RAS
,
WE
, DSF = "Low",
CAS
, A9 = "High")
The All Bank Precharge command triggers precharge of both bank A and bank B.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MS82V16520-8AGA | 制造商:OKI Semiconductor 功能描述:SGRAM, 2X256KX32, 100 Pin, Plastic, QFP |
| MS82V16520A | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:262,144-Word 】 32-Bit 】 2-Bank SGRAM |
| MS82V16520A-7 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:262,144-Word 】 32-Bit 】 2-Bank SGRAM |
| MS82V16520A-8 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:262,144-Word 】 32-Bit 】 2-Bank SGRAM |
| MS82V32520 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:524,288-Word 】 32-Bit 】 2-Bank FIFO-SGRAM |
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