LFE2M20E-6FN256C LATTICE SEMICONDUCTOR, LFE2M20E-6FN256C Datasheet - Page 65

• Manufacturer Part Number: LFE2M20E-6FN256C
• Description: IC, LATTICEECP2M FPGA, 420MHZ, FPBGA-256
• Manufacturer: LATTICE SEMICONDUCTOR
• Series: LatticeECP2Mr

Specifications of LFE2M20E-6FN256C

• No. Of Logic Blocks: 19000
• No. Of Macrocells: 10500
• No. Of Speed Grades: 6
• No. Of I/o's: 140
• Clock Management: DLL, PLL
• I/o Supply Voltage: 3.465V
• Total Ram Bits: 1217Kbit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
LVPECL
The LatticeECP2/M devices support the differential LVPECL standard. This standard is emulated using comple-
mentary LVCMOS outputs in conjunction with a parallel resistor across the driver outputs. The LVPECL input stan-
dard is supported by the LVDS differential input buffer. The scheme shown in Figure 3-3 is one possible solution for
point-to-point signals.
Figure 3-3. Differential LVPECL
Table 3-4. LVPECL DC Conditions
16mA
16mA
V
V
V
Z
R
R
R
V
V
V
V
Z
I
1. For input buffer, see LVDS table.
DC
CCIO
CCIO
OUT
BACK
CCIO
T
OH
OL
OD
CM
S
P
Parameter
(+/-5%)
(+/-5%)
On-chip
= 3.3V
= 3.3V
R
R
Over Recommended Operating Conditions
Output Driver Supply (+/-5%)
Driver Impedance
Driver Series Resistor (+/-1%)
Driver Parallel Resistor (+/-1%)
Receiver Termination (+/-1%)
Output High Voltage
Output Low Voltage
Output Differential Voltage
Output Common Mode Voltage
Back Impedance
DC Output Current
S
S
1
Off-chip
= 93.1 ohms
= 93.1 ohms
(+/-1%)
(+/-1%)
Description
Zo = 100 ohm differential
R
P
Transmission line,
= 196 ohms
(+/-1%)
3-14
R
T
= 100 ohms
DC and Switching Characteristics
LatticeECP2/M Family Data Sheet
(+/-1%)
Typical
100.5
12.11
3.30
2.05
1.25
0.80
1.65
196
100
10
93
Off-chip
Units
mA
Ω
Ω
Ω
Ω
Ω
V
V
V
V
V
On-chip
+
-