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參數(shù)資料
| 型號： | SMJ44C251 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 262144 BY 4-BIT MULTIPORT VIDEO RAM |
| 中文描述： | 262144 4位多端口視頻內(nèi)存 |
| 文件頁數(shù)： | 51/53頁 |
| 文件大?。?/td> | 950K |
| 代理商： | SMJ44C251 |
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SMJ44C251B
262144 BY 4-BIT
MULTIPORT VIDEO RAM
SGMS058A – MARCH 1995 – REVISED JUNE 1995
51
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
PARAMETER MEASUREMENT INFORMATION
tw(SCH)
tw(SCL)
tw(SCH)
tw(SCL)
tw(SCH)
th(TRG)
tsu(TRG)
ta(SQ)
th(SHSQ)
tc(SC)
tc(SC)
RAS
TRG
SC
SDQ0–SDQ3
Valid Out
Valid Out
Valid Out
ta(SQ)
tdis(SE)
ta(SQ)
th(SHSQ)
Valid Out
SE
Data
In
td(SDSE)
ta(SE)
NOTES: A. While reading data through the serial-data register, the state of TRG is a don’t care as long as TRG is held high when RAS goes
low. This is to avoid the initiation of a register-to-memory-to-register data-transfer operation.
B. The serial data-out cycle is used to read data out of the data registers. Before data can be read via SDQ, the device must be put
into the read mode by performing a transfer-read cycle. Any transfer-write cycles occurring between the transfer-read cycle and the
subsequent shifting out of data take the device out of the read mode and put it in the write mode, not allowing the reading of data.
Figure 39. Serial-Read-Cycle Timing (SE-Controlled Read)
device symbolization
Speed (-10, -12)
Package Code
JD = ZIP
Lot Traceability Code
Date Code
Assembly Site Code
Die Revision Code
Wafer Fab Code
F
R
A
XXX
LLL
-SS
SMJ44C251B
TI
JD
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| SMJ55161 | 262144 BY 16-BIT MULTIPORT VIDEO RAM |
| SMJ55166 | 262144 BY 16-BIT MULTIPORT VIDEO RAM |
| SMJ626162 | 524288 BY 16-BIT BY 2-BANK SYNCHRONOUS DYNAMIC RANDOM-ACCESS MEMORY |
| SML-010DT | Chip LEDs with reflectors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SMJ44C251A-12JDM | 制造商:Texas Instruments 功能描述: |
| SMJ44C251B | 制造商:AUSTIN 制造商全稱:Austin Semiconductor 功能描述:256K X 4 VRAM 256K x 4 DRAM with 512K x 4 SAM |
| SMJ44C251B10HJM | 制造商:AUSTIN 制造商全稱:Austin Semiconductor 功能描述:256K X 4 VRAM 256K x 4 DRAM with 512K x 4 SAM |
| SMJ44C251B-10HJM | 制造商:AUSTIN 制造商全稱:Austin Semiconductor 功能描述:256K X 4 VRAM 256K x 4 DRAM with 512K x 4 SAM |
| SMJ44C251B10HMM | 制造商:AUSTIN 制造商全稱:Austin Semiconductor 功能描述:256K X 4 VRAM 256K x 4 DRAM with 512K x 4 SAM |
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