EP1C12F256C7 Altera, EP1C12F256C7 Datasheet - Page 56

• Manufacturer Part Number: EP1C12F256C7
• Description: IC CYCLONE FPGA 12K LE 256-FBGA
• Manufacturer: Altera
• Series: Cyclone®r

Specifications of EP1C12F256C7

• Number Of Logic Elements/cells: 12060
• Number Of Labs/clbs: 1206
• Total Ram Bits: 239616
• Number Of I /o: 185
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 256-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -
• Other names: 544-1011

Cyclone Device Handbook, Volume 1
2–50
Preliminary
of the standard. Using minimum settings provides signal slew rate
control to reduce system noise and signal overshoot.
possible settings for the I/O standards with drive strength control.
Open-Drain Output
Cyclone devices provide an optional open-drain (equivalent to an
open-collector) output for each I/O pin. This open-drain output enables
the device to provide system-level control signals (e.g., interrupt and
write-enable signals) that can be asserted by any of several devices.
Notes to
(1)
(2)
LVTTL (3.3 V)
LVCMOS (3.3 V)
LVTTL (2.5 V)
LVTTL (1.8 V)
LVCMOS (1.5 V)
Table 2–11. Programmable Drive Strength
SSTL-3 class I and II, SSTL-2 class I and II, and 3.3-V PCI I/O Standards do not
support programmable drive strength.
This is the default current strength setting in the Quartus II software.
Table
I/O Standard
2–11:
I
OH
/I
OL
Note (1)
Current Strength Setting (mA)
Table 2–11
24(2)
12(2)
16(2)
12(2)
8(2)
12
16
12
4
8
2
4
8
2
8
2
8
2
4
Altera Corporation
shows the
May 2008