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參數(shù)資料
| 型號： | QL82SD-PQ208 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 10 High Speed Bus LVDS Serial Links bandwidth up to 5 Gbps |
| 中文描述： | 10高速總線LVDS串行鏈路的帶寬高達(dá)5Gbps的 |
| 文件頁數(shù)： | 44/60頁 |
| 文件大?。?/td> | 3838K |
| 代理商： | QL82SD-PQ208 |
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www.quicklogic.com
2002 QuickLogic Corporation
QL82SD Device Data Sheet Rev C
Preliminary
44
.
NOTE:
Condition: 2.5 V, 25
°
C
Programmable Weak-Pull
Programmable weak pull-down resistors are available on each I/O. I/O Weak Pull-Down
eliminates the need for an external pull-down resistor for used I/O. The spec for pull-down
current is a maximum of 150 uA under a worst case condition.
-
148 uA @ 3.6 V,
-
55
°
C,
-
69 uA@ 2.5 V, 25
°
C.
Figure 53
illustrates the weak pull-down circuit.
Figure 53: I/O Weak Pull-Down Circuit
I/O Control and Local Hi-Drives
Each bank of I/Os has two input-only pins that can be programmed to drive the RST, CLK,
and EN inputs of I/O's in that bank. These input-only pins also double up as high-drive inputs
to a quadrant. Both as an I/O control or high-drive, these buffers can be driven by the
internal logic. The I/O control network and local high-drive performance is indicated in
Table 36
.
Table 35: 2.5 V Slew Rate
VCCIO = 2.5 V
Fast Slew
Slow Slew
Rising Edge
1.7 V/nS
0.6 V/vS
Falling Edge
1.9 V/nS
0.6 V/nS
Table 36: I/O Control Network/ Local Hi-Drive Performance
TT, 25C, 2.5V
From Pad
From Array
I/O (slow)
1.00 ns
1.14 ns
I/O (fast)
0.63 ns
0.78 ns
Skew
0.37 ns
0.36 ns
I/O
Register 1
PAD
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