参数资料
型号: XC2S50-5PQ208I
厂商: Xilinx Inc
文件页数: 42/99页
文件大小: 0K
描述: IC FPGA 2.5V I-TEMP 208-PQFP
标准包装: 24
系列: Spartan®-II
LAB/CLB数: 384
逻辑元件/单元数: 1728
RAM 位总计: 32768
输入/输出数: 140
门数: 50000
电源电压: 2.375 V ~ 2.625 V
安装类型: 表面贴装
工作温度: -40°C ~ 100°C
封装/外壳: 208-BFQFP
供应商设备封装: 208-PQFP(28x28)
Spartan-II FPGA Family: Functional Description
DS001-2 (v2.8) June 13, 2008
Module 2 of 4
Product Specification
47
R
SSTL2_I
A sample circuit illustrating a valid termination technique for
SSTL2_I appears in Figure 49. DC voltage specifications
appear in Table 27 for the SSTL2_I standard. See "DC
Specifications" in Module 3 for the actual FPGA
characteristics
SSTL2 Class II
A sample circuit illustrating a valid termination technique for
SSTL2_II appears in Figure 50. DC voltage specifications
appear in Table 28 for the SSTL2_II standard. See "DC
Specifications" in Module 3 for the actual FPGA
characteristics.
Figure 49: Terminated SSTL2 Class I
Table 27: SSTL2_I Voltage Specifications
Parameter
Min
Typ
Max
VCCO
2.3
2.5
2.7
VREF = 0.5 × VCCO
1.15
1.25
1.35
VTT = VREF + N(1)
1.11
1.25
1.39
VIH ≥ VREF + 0.18
1.33
1.43
3.0(2)
VIL ≤ VREF – 0.18
–0.3(3)
1.07
1.17
VOH ≥ VREF + 0.61
1.76
-
VOL ≤ VREF – 0.61
-
0.74
IOH at VOH (mA)
–7.6
-
IOL at VOL (mA)
7.6
-
Notes:
1.
N must be greater than or equal to –0.04 and less than or
equal to 0.04.
2.
VIH maximum is VCCO + 0.3.
3.
VIL minimum does not conform to the formula.
VREF = 1.25V
VCCO = 2.5V
50
Ω
Z = 50
SSTL2 Class I
DS001_49_061200
VTT = 1.25V
25
Ω
Figure 50: Terminated SSTL2 Class II
Table 28: SSTL2_II Voltage Specifications
Parameter
Min
Typ
Max
VCCO
2.3
2.5
2.7
VREF = 0.5 × VCCO
1.15
1.25
1.35
VTT = VREF + N(1)
1.11
1.25
1.39
VIH ≥ VREF + 0.18
1.33
1.43
3.0(2)
VIL ≤ VREF – 0.18
–0.3(3)
1.07
1.17
VOH ≥ VREF + 0.8
1.95
-
VOL ≤ VREF - 0.8
-
0.55
IOH at VOH (mA)
–15.2
-
IOL at VOL (mA)
15.2
-
Notes:
1.
N must be greater than or equal to –0.04 and less than or
equal to 0.04.
2.
VIH maximum is VCCO + 0.3.
3.
VIL minimum does not conform to the formula.
VREF = 1.25V
VCCO = 2.5V
50
Ω
Z = 50
SSTL2 Class II
DS001_50_061200
VTT = 1.25V
50
Ω
VTT = 1.25V
25
Ω
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