EP4CE55F23C7 Altera, EP4CE55F23C7 Datasheet - Page 114

• Manufacturer Part Number: EP4CE55F23C7
• Description: IC CYCLONE IV FPGA 55K 484FBGA
• Manufacturer: Altera
• Series: CYCLONE® IV Er

Specifications of EP4CE55F23C7

• Number Of Logic Elements/cells: 55856
• Number Of Labs/clbs: 3491
• Total Ram Bits: 2340000
• Number Of I /o: 324
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Gates: -

6–6
PCI-Clamp Diode
Cyclone IV Device Handbook, Volume 1
Cyclone IV devices provide an optional PCI-clamp diode enabled input and output
for each I/O pin. Dual-purpose configuration pins support the diode in user mode if
the specific pins are not used as configuration pins for the selected configuration
scheme. For example, if you are using the active serial (AS) configuration scheme, you
cannot use the clamp diode on the ASDO and nCSO pins in user mode. Dedicated
configuration pins do not support the on-chip diode.
The PCI-clamp diode is available for the following I/O standards:
■
■
■
■
■
■
■
If the input I/O standard is one of the listed standards, the PCI-clamp diode is
enabled by default in the Quartus II software.
3.3-V LVTTL
3.3-V LVCMOS
3.0-V LVTTL
3.0-V LVCMOS
2.5-V LVTTL/LVCMOS
PCI
PCI-X
Chapter 6: I/O Features in Cyclone IV Devices
© December 2010 Altera Corporation
I/O Element Features