参数资料
型号: A54SX08A-2CQ208
厂商: Electronic Theatre Controls, Inc.
元件分类: FPGA
英文描述: SX-A Family FPGAs
中文描述: 的SX - A系列FPGA的
文件页数: 53/108页
文件大小: 720K
代理商: A54SX08A-2CQ208
SX-A Family FPGAs
v5.1
2-33
Table 2-27
A54SX16A Timing Characteristics
(Worst-Case Commercial Conditions V
CCA
= 2.25 V, V
CCI
= 4.75 V, T
J
= 70°C)
Parameter
5 V PCI Output Module Timing
1
Description
–3 Speed
–2 Speed
–1 Speed
Std. Speed
–F Speed
Units
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
t
DLH
Data-to-Pad Low to High
2.2
2.5
2.8
3.3
4.6
ns
t
DHL
Data-to-Pad High to Low
2.8
3.2
3.6
4.2
5.9
ns
t
ENZL
Enable-to-Pad, Z to L
1.3
1.5
1.7
2.0
2.8
ns
t
ENZH
Enable-to-Pad, Z to H
2.2
2.5
2.8
3.3
4.6
ns
t
ENLZ
Enable-to-Pad, L to Z
3.0
3.5
3.9
4.6
6.4
ns
t
ENHZ
d
TLH2
d
THL2
5 V TTL Output Module Timing
3
Enable-to-Pad, H to Z
2.8
3.2
3.6
4.2
5.9
ns
Delta Low to High
0.016
0.016
0.02
0.022
0.032
ns/pF
Delta High to Low
0.026
0.03
0.032
0.04
0.052
ns/pF
t
DLH
Data-to-Pad Low to High
2.2
2.5
2.8
3.3
4.6
ns
t
DHL
Data-to-Pad High to Low
2.8
3.2
3.6
4.2
5.9
ns
t
DHLS
Data-to-Pad High to Low—low slew
6.7
7.7
8.7
10.2
14.3
ns
t
ENZL
Enable-to-Pad, Z to L
2.1
2.4
2.7
3.2
4.5
ns
t
ENZLS
Enable-to-Pad, Z to L—low slew
7.4
8.4
9.5
11.0
15.4
ns
t
ENZH
Enable-to-Pad, Z to H
1.9
2.2
2.5
2.9
4.1
ns
t
ENLZ
Enable-to-Pad, L to Z
3.6
4.2
4.7
5.6
7.8
ns
t
ENHZ
d
TLH2
d
THL2
d
THLS2
Enable-to-Pad, H to Z
2.5
2.9
3.3
3.9
5.4
ns
Delta Low to High
0.014
0.017
0.017
0.023
0.031
ns/pF
Delta High to Low
0.023
0.029
0.031
0.037
0.051
ns/pF
Delta High to Low—low slew
0.043
0.046
0.057
0.066
0.089
ns/pF
Notes:
1. Delays based on 50 pF loading.
2. To obtain the slew rate, substitute the appropriate Delta value, load capacitance, and the V
CCI
value into the following equation:
Slew Rate [V/ns] = (0.1*V
CCI
– 0.9*V
CCI)
/ (C
load
* d
T[LH|HL|HLS]
)
where C
load
is the load capacitance driven by the I/O in pF
d
T[LH|HL|HLS]
is the worst case delta value from the datasheet in ns/pF.
3. Delays based on 35 pF loading.
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