LFE2M70E-5FN900C Lattice, LFE2M70E-5FN900C Datasheet - Page 66

• Manufacturer Part Number: LFE2M70E-5FN900C
• Description: IC, LATTICEECP2M FPGA, 420MHZ, FPBGA-900
• Manufacturer: Lattice
• Series: LatticeECP2Mr

Specifications of LFE2M70E-5FN900C

• No. Of Logic Blocks: 67000
• No. Of Macrocells: 34000
• No. Of Speed Grades: 5
• Total Ram Bits: 4534Kbit
• No. Of I/o's: 416
• Clock Management: DLL, PLL
• I/o Supply Voltage: 3.465V
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Lattice Semiconductor
RSDS
The LatticeECP2/M devices support differential RSDS standard. This standard is emulated using complementary
LVCMOS outputs in conjunction with a parallel resistor across the driver outputs. The RSDS input standard is sup-
ported by the LVDS differential input buffer. The scheme shown in Figure 3-4 is one possible solution for RSDS
standard implementation. Resistor values in Figure 3-4 are industry standard values for 1% resistors.
Figure 3-4. RSDS (Reduced Swing Differential Signaling)
Table 3-5. RSDS DC Conditions
8mA
8mA
V CCIO = 2.5V
V CCIO = 2.5V
V
Z
R
R
R
V
V
V
V
Z
I
1. For input buffer, see LVDS table.
Parameter
DC
OUT
BACK
CCIO
OH
OL
OD
CM
S
P
T
On-chip
(+/-5%)
(+/-5%)
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
1
Over Recommended Operating Conditions
R
R
S
S
Off-chip
= 294 ohms
= 294 ohms
(+/-1%)
(+/-1%)
Description
R
P
Zo = 100 ohm differential
= 121 ohms
(+/-1%)
3-15
Transmission line,
R
T
DC and Switching Characteristics
= 100 ohms
LatticeECP2/M Family Data Sheet
(+/-1%)
Typical
101.5
2.50
1.35
1.15
0.20
1.25
3.66
294
121
100
20
Off-chip
Units
mA
Ω
Ω
Ω
Ω
Ω
V
V
V
V
V
On-chip
+
-