參數(shù)資料
型號(hào): LC4256B-5T100I
文件頁數(shù): 19/57頁
文件大小: 1078K
代理商: LC4256B-5T100I
Lattice Semiconductor
ispMACH 4000V/B/C Family Data Sheet
19
ispMACH 4000V/B/C External Switching Characteristics (Cont.)
Over Recommended Operating Conditions
Parameter
t
PD
Description
1, 2, 3
-5
-75
-10
5
Units
ns
ns
Min.
Max.
5.0
5.5
Min.
Max.
7.5
8.0
Min.
Max.
10.0
10.5
5-PT bypass combinatorial propagation delay
20-PT combinatorial propagation delay through macro-
cell
GLB register setup time before clock
GLB register setup time before clock with
T-type register
GLB register setup time before clock, input register path
GLB register setup time before clock with zero hold
GLB register hold time after clock
GLB register hold time after clock with
T-type register
GLB register hold time after clock, input register path
GLB register hold time after clock, input register path with
zero hold
GLB register clock-to-output delay
External reset pin to output delay
External reset pulse duration
Input to output local product term output enable/disable
Input to output global product term output enable/disable
Global OE input to output enable/disable
Global clock width, high or low
Global gate width low (for low transparent) or high (for
high transparent)
Input register clock width, high or low
Clock frequency with internal feedback
Clock frequency with external feedback,
[1/ (t
S
+ t
CO
)]
t
PD_MC
t
S
3.0
3.2
4.5
4.7
5.5
5.5
ns
ns
t
ST
t
SIR
t
SIRZ
t
H
1.2
2.2
0.0
0.0
1.7
2.7
0.0
0.0
1.7
2.7
0.0
0.0
ns
ns
ns
ns
t
HT
t
HIR
1.0
0.0
1.0
0.0
1.0
0.0
ns
t
HIRZ
ns
t
CO
t
R
t
RW
t
PTOE/DIS
t
GPTOE/DIS
t
GOE/DIS
t
CW
2.0
2.2
2.2
3.40
6.30
7.00
9.00
5.00
4.0
3.3
3.3
4.5
9.0
9.0
10.3
7.0
4.0
4.0
4.0
6.0
10.5
10.5
12.0
8.0
ns
ns
ns
ns
ns
ns
ns
t
GW
ns
t
WIR
f
MAX
2.2
227
156
3.3
168
111
4.0
125
86
ns
MHz
4
f
MAX
(Ext.)
MHz
Timing v.3.1
1. Timing numbers are based on default LVCMOS 1.8 I/O buffers. Use timing adjusters provided to calculate other standards.
2. Measured using standard switching circuit, assuming GRP loading of 1 and 1 output switching.
3. Pulse widths and clock widths less than minimum will cause unknown behavior.
4. Standard 16-bit counter using GRP feedback.
5. Only available in industrial grade.
相關(guān)PDF資料
PDF描述
LC4256B-5T176C
LC4256B-5T176I
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LC4256B-75F256AI
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