LFEC LATTICE [Lattice Semiconductor], LFEC Datasheet - Page 34

• Manufacturer Part Number: LFEC
• Description: LatticeECP/EC Family Data Sheet
• Manufacturer: LATTICE [Lattice Semiconductor]

Lattice Semiconductor
Table 2-14. Supported Output Standards
Hot Socketing
The LatticeECP/EC devices have been carefully designed to ensure predictable behavior during power-up and
power-down. Power supplies can be sequenced in any order. During power up and power-down sequences, the
I/Os remain in tristate until the power supply voltage is high enough to ensure reliable operation. In addition,
leakage into I/O pins is controlled to within specified limits, this allows for easy integration with the rest of the
system. These capabilities make the LatticeECP/EC ideal for many multiple power supply and hot-swap applica-
tions.
Recommended Power Up Sequence: As described in the previous paragraph, the supplies can be sequenced
in any order. However, once internal power good is achieved (determined by VCC, VCCAUX, VCCIO bank 5) the
part releases I/Os from tri-state and the management of I/Os becomes the designers responsibility. To simplify a
system design it is therefore recommended that supplies be sequenced VCCIO, VCC, VCCAUX.
Single-ended Interfaces
LVTTL
LVCMOS33
LVCMOS25
LVCMOS18
LVCMOS15
LVCMOS12
LVCMOS33, Open Drain
LVCMOS25, Open Drain
LVCMOS18, Open Drain
LVCMOS15, Open Drain
LVCMOS12, Open Drain
PCI33
HSTL18 Class I, II, III
HSTL15 Class I, III
SSTL3 Class I, II
SSTL2 Class I, II
SSTL18 Class I
Differential Interfaces
Differential SSTL3, Class I, II
Differential SSTL2, Class I, II
Differential SSTL18, Class I
Differential HSTL18, Class I, II, III
Differential HSTL15, Class I, III
LVDS
BLVDS
LVPECL
RSDS
1. Emulated with external resistors.
1
1
1
Output Standard
4mA, 8mA, 12mA, 16mA, 20mA
4mA, 8mA, 12mA, 16mA, 20mA
4mA, 8mA, 12mA 16mA, 20mA
4mA, 8mA, 12mA 16mA, 20mA
4mA, 8mA, 12mA 16mA, 20mA
2-31
4mA, 8mA, 12mA, 16mA
4mA, 8mA, 12mA 16mA
4mA, 8mA
2mA, 6mA
4mA, 8mA
2mA, 6mA
Drive
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
LatticeECP/EC Family Data Sheet
V
CCIO
3.3
3.3
2.5
1.8
1.5
1.2
3.3
1.8
1.5
3.3
2.5
3.3
2.5
1.8
1.8
1.5
2.5
2.5
3.3
2.5
—
—
—
—
—
1.8
(Nom.)
Architecture