EP1C4 ALTERA [Altera Corporation], EP1C4 Datasheet - Page 86

• Manufacturer Part Number: EP1C4
• Description: Cyclone FPGA Family Data Sheet
• Manufacturer: ALTERA [Altera Corporation]

Cyclone Device Handbook, Volume 1
4–16
Preliminary
t
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I N S U
I N H
O U T C O
I N S U P L L
I N H P L L
Table 4–29. Cyclone Global Clock External I/O Timing Parameters
Symbol
Setup time for input or bidirectional pin using IOE input
register with global clock fed by
Hold time for input or bidirectional pin using IOE input
register with global clock fed by
Clock-to-output delay output or bidirectional pin using IOE
output register with global clock fed by
Setup time for input or bidirectional pin using IOE input
register with global clock fed by Enhanced PLL with default
phase setting
Hold time for input or bidirectional pin using IOE input
register with global clock fed by enhanced PLL with default
phase setting
Figure 4–2. External Timing in Cyclone Devices
All external I/O timing parameters shown are for 3.3-V LVTTL I/O
standard with the maximum current strength and fast slew rate. For
external I/O timing using standards other than LVTTL or for different
current strengths, use the I/O standard input and output delay adders in
Tables 4–40
Table 4–29
clock networks.
Dedicated
Clock
Parameter
shows the external I/O timing parameters when using global
through 4–44.
CLK
CLK
pin
pin
CLK
pin
Output Register
Input Register
OE Register
D
D
D
CLRN
CLRN
CLRN
PRN
PRN
PRN
Q
Q
Q
Notes
C
LOAD
(1),
(2)
= 10 pF
(Part 1 of 2)
Conditions
Altera Corporation
t
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XZ
ZX
INSU
INH
OUTCO
Bidirectional
Pin
January 2007