EP1C20F324C7N Altera, EP1C20F324C7N Datasheet - Page 42

• Manufacturer Part Number: EP1C20F324C7N
• Description: IC CYCLONE FPGA 20K LE 324-FBGA
• Manufacturer: Altera
• Series: Cyclone®r

Specifications of EP1C20F324C7N

• Number Of Logic Elements/cells: 20060
• Number Of Labs/clbs: 2006
• Total Ram Bits: 294912
• Number Of I /o: 233
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 324-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Other names: 544-1678

Cyclone Device Handbook, Volume 1
2–36
Preliminary
External Clock Inputs
Each PLL supports single-ended or differential inputs for source-
synchronous receivers or for general-purpose use. The dedicated clock
pins (CLK[3..0]) feed the PLL inputs. These dual-purpose pins can also
act as LVDS input pins. See
Table 2–8
pins.
For more information on LVDS I/O support, refer to
page
External Clock Outputs
Each PLL supports one differential or one single-ended output for
source-synchronous transmitters or for general-purpose external clocks.
If the PLL does not use these PLL_OUT pins, the pins are available for use
as general-purpose I/O pins. The PLL_OUT pins support all I/O
standards shown in
The external clock outputs do not have their own V
supplies. Therefore, to minimize jitter, do not place switching I/O pins
next to these output pins. The EP1C3 device in the 100-pin TQFP package
3.3-V LVTTL/LVCMOS
2.5-V LVTTL/LVCMOS
1.8-V LVTTL/LVCMOS
1.5-V LVCMOS
3.3-V PCI
LVDS
SSTL-2 class I
SSTL-2 class II
SSTL-3 class I
SSTL-3 class II
Differential SSTL-2
Table 2–8. PLL I/O Standards
2–54.
I/O Standard
shows the I/O standards supported by PLL input and output
Table
2–8.
Figure
2–25.
CLK Input
v
v
v
v
v
v
v
v
v
v
—
CC
“LVDS I/O Pins” on
and ground voltage
Altera Corporation
EXTCLK Output
v
v
v
v
v
v
v
v
v
v
v
May 2008