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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)： | 3/48頁 |
| 文件大?。?/td> | 423K |
| 代理商： | LH540215 |
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In the Enhanced Operating Mode, coordinated op-
eration of two 18-bit FIFOs as one 36-bit FIFO may be
ensured by ‘interlocked’ crosscoupling of the status-
flag outputs from each FIFO to the expansion inputs
of the other one; that is, FF to WXI/WEN
2
, and EF to
RXI/REN
2
, in both directions between two paralleled
FIFOs. This ‘interlocked’ operation takes effect
automatically, if two paralleled FIFOs are crosscon-
nected in this manner, with the EMODE control input
being asserted (LOW). (See Tables 1 and 2, also
Figures 27 and 30.) IDT-compatible depth cascading
no longer is available when operating in this ‘inter-
locked-paralleled’ mode; however, pipelined depth
cascading remains available.
TOP VIEW
540215-2
3
2
1
68 67 66 65 64 63
62 61
9
8
7
6
5
4
Q
1
Q
1
Q
1
L
O
V
C
E
V
C
D
1
D
1
D
1
R
R
R
16
17
18
19
20
23
24
21
22
26
15
11
12
13
14
10
25
D
2
D
0
D
13
D
12
D
14
D
11
D
9
D
10
D
8
V
SS
V
CC
D
7
D
6
D
5
D
3
D
4
D
1
55
54
53
52
51
48
47
50
49
46
44
60
59
58
57
56
45
Q
11
V
CC
Q
10
Q
9
Q
8
Q
7
EMODE
*
Q
6
Q
5
Q
4
V
CC
Q
14
Q
13
V
SS
Q
12
33 34
35 36 37 38 39 40 41
42 43
27 28 29 30 31 32
Q
2
Q
3
W
Q
0
Q
1
V
C
V
C
F
R
W
R
E
2
F
R
R
2
P
W
W
2
W
P
V
SS
V
SS
V
S
V
S
V
S
V
S
BOLD ITALIC = Enhanced Operating Mode.
*
This pin is V
CC
on IDT pinout; if EMODE pin is simply
biased to V
CC
, part will behave identical to IDT functionality.
68-PIN PLCC
Figure 2. Pin Connections for 68-Pin PLCC Package
BOLD ITALIC = Enhanced Operating Mode
512 x 18/1024 x 18 Synchronous FIFO
LH540215/25
3
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| LH540235 | 2048 x 18 / 4096 x 18 Synchronous FIFOs |
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| LH5424-QT | 5 mm T1 3/4 LED, Non Diffused Super-Bright, Hyper-Red GaAIAs-LED |
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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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