LFE2-12E-5F256C LATTICE SEMICONDUCTOR, LFE2-12E-5F256C Datasheet - Page 95
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LFE2-12E-5F256C
Manufacturer Part Number
LFE2-12E-5F256C
Description
FPGA LatticeECP2 Family 12000 Cells 90nm (CMOS) Technology 1.2V 256-Pin FBGA
Manufacturer
LATTICE SEMICONDUCTOR
Datasheet
1.LFE2-12SE-6FN256C.pdf
(389 pages)
Specifications of LFE2-12E-5F256C
Package
256FBGA
Family Name
LatticeECP2
Device Logic Units
12000
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
193
Ram Bits
226304
In System Programmability
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LFE2-12E-5F256C
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
10 000
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Lattice Semiconductor
SERDES External Reference Clock (LatticeECP2M Family Only)
The external reference clock selection and its interface are a critical part of system applications for this product.
Table 3-14 specifies reference clock requirements, over the full range of operating conditions.
Table 3-14. External Reference Clock Specification (refclkp/refclkn)
Figure 3-13. Jitter Transfer
SERDES Power-Down/Power-Up Specification
Table 3-15. Power-Down and Power-Up Specification
F
F
V
V
V
V
D
T
T
Z
C
1. The signal swing for a single-ended input clock must be as large as the p-p differential swing of a differential input clock to get the same
2. When AC coupled, the input common mode range is determined by:
3. Measured at 50% amplitude.
4. Input capacitance of 1.5pF is total capacitance, including both device and package.
t
t
PWRDN
PWRUP
REF
REF-PPM
REF-R
REF-F
REF-IN-TERM
REF-IN-SE
REF-IN
REF-CM-DC
REF-CM-AC
REF
REF-IN-CAP
gain at the input receiver. Lower swings for the clock may be possible, but will tend to increase jitter.
(Min input level) + (Peak-to-peak input swing)/2
Symbol
Symbol
Frequency range
Frequency tolerance
Input swing, single-ended clock
Input levels
Input common mode range (DC coupled)
Input common mode range (AC coupled)
Duty cycle
Rise time (20% to 80%)
Fall time (80% to 20%)
Input termination
Input capacitance
-10.00
-15.00
-20.00
-25.00
-5.00
5.00
0.00
Power-down time after all power down register bits set to ‘0’
Power-up time after all power down register bits set to ‘1’
0.1
3
Note: This graph is for a nominal device.
Description
4
1
(Input common mode voltage)
Frequency (MHz)
1
Description
2
3-43
Min.
-300
10
100
0.5
25
40
—
0
0
(Max input level) - (Peak-to-peak input swing)/2
50/2K
DC and Switching Characteristics
Typ.
LatticeECP2/M Family Data Sheet
500
500
—
—
—
—
—
—
—
—
100
V
CCP
Jitter T.
Gain@25°C,1.20V,
PJ=100ps
Max.
1200
1000
1000
320
300
1.2
1.5
1.5
60
+ 0.8
Max.
100
10
mV, p-p
Ohms
Units
MHz
ppm
pF
ps
ps
%
V
V
V
Units
s
s
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