LFE2-20E-5FN256I Lattice, LFE2-20E-5FN256I Datasheet - Page 90

• Manufacturer Part Number: LFE2-20E-5FN256I
• Description: IC FPGA 21KLUTS 193I/O 256FPBGA
• Manufacturer: Lattice
• Series: ECP2r

Specifications of LFE2-20E-5FN256I

• Number Of Logic Elements/cells: 21000
• Number Of Labs/clbs: 2625
• Total Ram Bits: 282624
• Number Of I /o: 193
• Number Of Gates: -
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 256-BGA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 220-1170; LFE2-20E-5FN256I; Q6411457

Lattice Semiconductor
SERDES High-Speed Data Transmitter (LatticeECP2M Family Only)
Table 3-7. Serial Output Timing and Levels
Table 3-8. Channel Output Jitter - x10 Mode
Deterministic
Random
Total
Deterministic
Random
Total
Deterministic
Random
Total
Deterministic
Random
Total
Note: Values are measured with PRBS 2
x10 mode.
V TX-DIFF-P-P-1
V TX-DIFF-P-P-1.25
V TX-DIFF-P-P-1.3
V TX-DIFF-P-P-1.35
V OCM
T TX-R
T TX-F
Z TX-OI-SE
R TX-RL
1. All measurements are with 50 ohm impedance.
2. See TN1124,
Description
Symbol
LatticeECP2M SERDES/PCS Usage Guide
Differential swing (1V setting)
Differential swing (1.25V setting)
Differential swing (1.3V setting)
Differential swing (1.35V setting)
Output common mode voltage
Rise time (20% to 80%)
Fall time (80% to 20%)
Output impedance 50/75/HiZ 
K Ohms (single-ended)
Return loss (with package)
3.125 Gbps
3.125 Gbps
3.125 Gbps
2.5 Gbps
2.5 Gbps
2.5 Gbps
1.25 Gbps
1.25 Gbps
1.25 Gbps
250 Mbps
250 Mbps
250 Mbps
Frequency
Description
7
-1, all channels operating, FPGA Logic active, I/Os around SERDES pins quiet, reference clock at
1, 2
Min.
—
—
—
—
—
—
—
—
—
—
—
—
1, 2
1, 2
1, 2
for actual binary settings.
0.25 to 3.125 Gbps
0.25 to 3.125 Gbps
0.25 to 3.125 Gbps
0.25 to 3.125 Gbps
3-38
Frequency
—
—
—
—
—
Typ.
0.08
0.22
0.33
0.08
0.20
0.25
0.03
0.14
0.17
0.04
0.12
0.15
DC and Switching Characteristics
LatticeECP2/M Family Data Sheet
V CCOB
Min.
0.79
1.00
1.04
1.08
0.75
—
—
—
—
-
Max.
V CCOB
0.12
0.17
0.10
0.17
0.38
0.43
0.25
0.35
0.19
0.24
0.13
0.29
50/70
Typ.
0.99
1.25
1.30
1.35
0.60
HiZ
70
70
9
-
V CCOB
Max.
1.19
1.50
1.56
1.62
0.45
—
—
—
—
1, 2
-
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
UI, p-p
Units
Ohms
V, p-p
V, p-p
V, p-p
V, p-p
Units
dB
ps
ps
V