EP4CE55F23C8 Altera, EP4CE55F23C8 Datasheet - Page 145

• Manufacturer Part Number: EP4CE55F23C8
• Description: IC CYCLONE IV FPGA 55K 484FBGA
• Manufacturer: Altera
• Series: CYCLONE® IV Er

Specifications of EP4CE55F23C8

• 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: -

Chapter 6: I/O Features in Cyclone IV Devices
High-Speed I/O Timing
Figure 6–22. Cyclone IV Devices High-Speed I/O Timing Budget
Note to
(1) The equation for the high-speed I/O timing budget is:
© December 2010 Altera Corporation
Period
Figure
=
6–22:
f
Internal Clock Period
0.5

TCCS
Figure 6–21. High-Speed I/O Timing Diagram
Figure 6–22
For more information, refer to the
+
RSKM
+
SW
shows the Cyclone IV devices high-speed I/O timing budget.
0.5 × TCCS
Internal Clock
+
Input Clock
Input Data
RSKM
Receiver
External
RSKM
+
0.5

TCCS
TCCS.
RSKM
Cyclone IV Device Datasheet
(Note 1)
SW
Sampling Window (SW)
Time Unit Interval (TUI)
RSKM
Cyclone IV Device Handbook, Volume 1
RSKM
0.5 × TCCS
chapter.
TCCS
6–37