2–10
Chapter 2: Device Datasheet for Cyclone V Devices
Electrical Characteristics
Internal Weak Pull-Up Resistor
Table 2–13 lists the weak pull-up resistor values for Cyclone V devices.
(1), (2)
Table 2–13. Internal Weak Pull-Up Resistor Values for Cyclone V Devices—Preliminary
Symbol
Description
Conditions (V) (3)
Typ (4)
25
Unit
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
kΩ
VCCIO = 3.3 5%
V
V
CCIO = 3.0 5%
CCIO = 2.5 5%
25
25
Value of the I/O pin pull-up resistor before and during
configuration, as well as user mode if you have enabled the
programmable pull-up resistor option.
VCCIO = 1.8 5%
CCIO = 1.5 5%
CCIO = 1.35 5%
VCCIO = 1.25 5%
CCIO = 1.2 5%
25
RPU
V
25
V
25
25
V
25
Notes to Table 2–13:
(1) All I/O pins have an option to enable weak pull-up except the configuration, test, and JTAG pins.
(2) The internal weak pull-down feature is only available for the JTAG TCKpin. The typical value for this internal weak pull-down resistor is
approximately 25 kΩ.
(3) Pin pull-up resistance values may be lower if an external source drives the pin higher than VCCIO
.
(4) These specifications are valid with 10% tolerances to cover changes over PVT.
I/O Standard Specifications
Table 2–14 through Table 2–19 list the input voltage (VIH and VIL), output voltage
(VOH and VOL), and current drive characteristics (IOH and IOL) for various I/O
standards supported by Cyclone V devices. These tables also list the Cyclone V device
family I/O standard specifications. The VOL and VOH values are valid at the
corresponding IOH and IOL, respectively.
For an explanation of terms used in Table 2–14 through Table 2–19, refer to “Glossary”
on page 2–37.
Table 2–14. Single-Ended I/O Standards for Cyclone V Devices—Preliminary (Part 1 of 2)
V
CCIO (V)
VIL (V)
Max
VIH (V)
VOL (V)
Max
VOH (V)
Min
I/O
Standard
IOL
IOH
(mA) (mA)
Min Typ Max Min
Min
Max
3.3-V
LVTTL
3.135 3.3 3.465 –0.3
0.8
0.8
0.8
1.7
3.6
0.45
0.2
0.4
2.4
VCCIO – 0.2
2.4
4
2
2
–4
–2
–2
3.3-V
LVCMOS
3.135 3.3 3.465 –0.3
1.7
1.7
1.7
3.6
3.6
3.6
3.0-V
LVTTL
2.85
3
3
3.15 –0.3
3.15 –0.3
3.0-V
LVCMOS
2.85
2.85
0.8
0.2
VCCIO – 0.2 0.1 –0.1
3.0-V PCI
3
3
3.15
3.15
—
—
0.3 x VCCIO
0.5 x VCCIO
VCCIO + 0.3
VCCIO + 0.3
3.6
0.1 x VCCIO 0.9 x VCCIO
0.1 x VCCIO 0.9 x VCCIO
1.5 –0.5
1.5 –0.5
3.0-V PCI-X 2.85
0.35 x VCCIO 0.5 x VCCIO
0.7 1.7
2.5 V
1.8 V
2.375 2.5 2.625 –0.3
0.4
2
1
2
–1
–2
1.71 1.8 1.89 –0.3 0.35 x VCCIO 0.65 x VCCIO VCCIO + 0.3
0.45
VCCIO – 0.45
Cyclone V Device Handbook
February 2012 Altera Corporation
Volume 1: Device Overview and Datasheet
ALTERA [ ALTERA CORPORATION ]
