LFEC10E-3F256C Lattice Semiconductor Corp., LFEC10E-3F256C Datasheet - Page 96

• Manufacturer Part Number: LFEC10E-3F256C
• Description: Latticeecp/ec Family of Fpga Devices Has Been Optimized to Deliver Mainstream Fpga Features at Low Cost.for Maximum Performance And Value, The Latticeecp (EConomy Plus) Fpga Concept Combines an Efficient Fpgafabric With High-speed Dedicated Functions
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Table 7-4. O_TYPE Attribute Values (Continued)
DRIVE
The drive strength attribute is available for LVTTL and LVCMOS output standards. These can be set or each I/O pin
individually.
Values: NA, 2, 4, 8, 12, 16, 20
LatticeECP/EC Default: 6
The programmable drive available on a pad will depend on the V
for different V
Table 7-5. Programmable Drive Strength Values at Various V
PULLMODE
The PULLMODE attribute is available for all the LVTLL and LVCMOS inputs and outputs. This attribute can be
enabled for each I/O independently.
Values: UP, DOWN, NONE, KEEPER
Default: UP
PCICLAMP
PCI33 inputs and outputs on the top of the device have an optional PCI clamp that is enabled via the PCICLAMP
attribute. The PCICLAMP is also available for all LVCMOS33 and LVTTL inputs and outputs.
Values: ON, OFF
Default: OFF
2.5V LVCMOS, Open Drain
1.8V LVCMOS, Open Drain
1.5V LVCMOS, Open Drain
1.2V LVCMOS, Open Drain
3.3V PCI
1. These differential standards are implemented by using complementary LVCMOS driver with external resistor pack.
2. IO_TYPE with a “OD” at the end indicate that the I/O is configures as an open drain output.
CCIO.
sysIO Signaling Standard
Drive
12
16
20
2
4
6
8
1.2 V
X
X
1.5 V
X
X
7-8
LVCMOS25_OD
LVCMOS18_OD
LVCMOS15_OD
LVCMOS12_OD
PCI33
V
1.8 V
CCIO
X
X
X
X
CCIO
CCIO.
Voltages
LatticeECP/EC sysIO Usage Guide
Table 7-5 shows the drive strength available
2
2
2
2
2.5 V
X
X
X
X
X
IO_TYPE
3.3 V
X
X
X
X
X
X