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參數(shù)資料
| 型號： | M5M4V16G50DFP-10 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | 16M (2-BANK x 262144-WORD x 32-BIT) Synchronous Graphics RAM |
| 中文描述： | 1,600（2 -銀行甲262144字× 32位）同步圖形RAM |
| 文件頁數(shù)： | 5/33頁 |
| 文件大?。?/td> | 167K |
| 代理商： | M5M4V16G50DFP-10 |
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M5M4V16G50DFP -8, -10, -12
Jan'97
Preliminary
MITSUBISHI LSIs
16M (2-BANK x 262144-WORD x 32-BIT) Synchronous Graphics RAM
MITSUBISHI ELECTRIC
SGRAM (Rev. 0.0)
BASIC FUNCTIONS
The M5M4V16G50DFP provides basic functions, bank (row) activate, burst read / write, bank (row)
precharge, and auto / self refresh.
Each command is defined by control signals of /RAS, /CAS, /WE, and DSF at CLK rising edge. In
addition to 3 signals, /CS ,CKE and A9 are used as chip select, refresh option, and precharge option,
respectively.
For a more detailed definition of commands, please see the command truth table.
Activate (ACT) [/CS, /RAS, DSF = L, /CAS, /WE = H]
ACT command activates a row in an idle bank indicated by A10 (BA) and row address
selected by A0 - A9.
Activate with WPB enable (ACTWPB) [/CS, /RAS = L, /CAS, /WE, DSF = H]
This command is the same as Activate except that Write-Per-Bit (WPB) is enabled. The Mask
Register’s contents are used as the WPB data.
Read (READ) [/CS, /CAS, DSF = L, /RAS, /WE = H]
READ command starts burst read from the active bank indicated by A10 (BA). First output data
appears after /CAS latency. When A9 = H at this command, the bank is deactivated after the burst read
(auto-precharge,
READA
).
Write (WRITE) [/CS, /CAS, /WE, DSF = L, /RAS = H]
WRITE command starts burst write to the active bank indicated by A10 (BA). Total data length to be
written is set by burst length. When A9 = H at this command, the bank is deactivated after the burst
write (auto-precharge,
WRITEA
).
Precharge (PRE) [/CS, /RAS, /WE, DSF = L, /CAS = H]
PRE command deactivates the active bank indicated by A10 (BA). This command also terminates
burst read /write operation. When A9 = H at this command, both banks are deactivated
(precharge all,
PREA
).
/CS
Chip Select : L=select, H=deselect
/RAS
Command
/CAS
Command
/WE
Command
CKE
Refresh Option @refresh command
A9
Precharge Option @precharge or read/write command
CLK
define basic commands
DSF
Command
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M5M4V16G50DFP-12 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16M (2-BANK x 262144-WORD x 32-BIT) Synchronous Graphics RAM |
| M5M4V16G50DFP-8 | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16M (2-BANK x 262144-WORD x 32-BIT) Synchronous Graphics RAM |
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