参数资料
型号: LFECP20E-5FN672C
厂商: Lattice Semiconductor Corporation
文件页数: 119/163页
文件大小: 0K
描述: IC FPGA 19.7KLUTS 672FPBGA
标准包装: 40
系列: ECP
逻辑元件/单元数: 19700
RAM 位总计: 434176
输入/输出数: 400
电源电压: 1.14 V ~ 1.26 V
安装类型: 表面贴装
工作温度: 0°C ~ 85°C
封装/外壳: 672-BBGA
供应商设备封装: 672-FPBGA(27x27)
3-23
DC and Switching Characteristics
LatticeECP/EC Family Data Sheet
sysCLOCK PLL Timing
Over Recommended Operating Conditions
Parameter
Description
Conditions
Min.
Typ.
Max.
Units
fIN
Input Clock Frequency (CLKI, CLKFB)
25
420
MHz
fOUT
Output Clock Frequency (CLKOP, CLKOS)
25
420
MHz
fOUT2
K-Divider Output Frequency (CLKOK)
0.195
210
MHz
fVCO
PLL VCO Frequency
420
840
MHz
fPFD
Phase Detector Input Frequency
25
MHz
AC Characteristics
tDT
Output Clock Duty Cycle
Default Duty Cycle
Elected
3
45
50
55
%
tPH
4
Output Phase Accuracy
0.05
UI
tOPJIT
1
Output Clock Period Jitter
fOUT >= 100MHz
+/- 125
ps
fOUT < 100MHz
0.02
UIPP
tSK
Input Clock to Output Clock Skew
Divider ratio = integer
+/- 200
ps
tW
Output Clock Pulse Width
At 90% or 10%
3
1—
ns
tLOCK
2
PLL Lock-in Time
150
s
tPA
Programmable Delay Unit
100
250
450
ps
tIPJIT
Input Clock Period Jitter
+/- 200
ps
tFBKDLY
External Feedback Delay
10
ns
tHI
Input Clock High Time
90% to 90%
0.5
ns
tLO
Input Clock Low Time
10% to 10%
0.5
ns
tRST
RST Pulse Width
10
ns
1. Jitter sample is taken over 10,000 samples of the primary PLL output with clean reference clock.
2. Output clock is valid after tLOCK for PLL reset and dynamic delay adjustment.
3. Using LVDS output buffers.
4. Relative to CLKOP.
Timing v.G 0.30
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