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參數(shù)資料
| 型號： | LH540215 |
| 廠商： | Sharp Corporation |
| 英文描述： | 512 x 18 / 1024 x 18 Synchronous FIFO |
| 中文描述： | 512 ×一千〇二十四分之一十八× 18同步FIFO |
| 文件頁數(shù)： | 27/48頁 |
| 文件大?。?/td> | 423K |
| 代理商： | LH540215 |
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540215-10
Q
0
- Q
17
REN
RCLK
EF
OE
WEN
D
0
- D
17
WCLK
DATA READ
t
DS
DATA IN OUTPUT REGISTER
t
DS
DATA WRITE 1
DATA WRITE 2
t
ENS
t
ENH
t
ENH
t
ENS
t
FRL(2)
t
SKEW2(1)
t
SKEW2(1)
t
REF
t
REF
t
REF
t
A
t
FRL(2)
NOTES:
1. t
is the minimum time between a rising WCLK edge and a
rising RCLK edge for EF to change predictably during the current
clock cycle. If the time between the rising edge of WCLK and the
rising edge of RCLK is less than t
, then it is not guaranteed
that EF will change state until the next following RCLK edge.
2. t
(First-Read Latency) is the minimum time between a rising WCLK
edge and a rising RCLK edge to assure a correct readout of the first data
word D
in response to the next RCLK edge. Thus, t
= t
CLK
+ t
.
If t
is not met, D
may be available either at t
+ t
, or after
one more clock cycle delay at 2 t
CLK
+ t
SKEW2
. The First-Read Latency
timing restrictions apply only when the FIFO has been empty (EF = LOW).
3. EF may be used to determine when the first data word D
0
may be read.
D
0
always is available on the next cycle after EF has gone HIGH.
LOW
BOLD ITALIC = Enhanced Operating Mode.
EF
2
t
REF
t
REF
Figure 11. Empty-Flag Timing
TIMING DIAGRAMS (cont’d)
512 x 18/1024 x 18 Synchronous FIFO
LH540215/25
27
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PDF描述 |
|---|---|
| LH540235 | 2048 x 18 / 4096 x 18 Synchronous FIFOs |
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| LH5424-S | 5 mm T1 3/4 LED, Non Diffused Super-Bright, Hyper-Red GaAIAs-LED |
| LH5424-QT | 5 mm T1 3/4 LED, Non Diffused Super-Bright, Hyper-Red GaAIAs-LED |
| LH5424-T | 5 mm T1 3/4 LED, Non Diffused Super-Bright, Hyper-Red GaAIAs-LED |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LH540215U-15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x18 Synchronous FIFO |
| LH540215U-20 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x18 Synchronous FIFO |
| LH540215U-25 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x18 Synchronous FIFO |
| LH540215U-35 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x18 Synchronous FIFO |
| LH540215U-50 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x18 Synchronous FIFO |
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