HC311 Datasheet, PDF (10/26 Pages) Altera Corporation – HardCopy III Device

1–8
Chapter 1: DC and Switching Characteristics of HardCopy III Devices
Electrical Characteristics
Internal Weak Pull-Up Resistor
Table 1–11 lists the weak pull-up resistor values for HardCopy III devices.
Table 1–11. HardCopy III Internal Weak Pull-Up Resistor – Preliminary (Note 1), (2)
Symbol
Parameter
Conditions
Min Typ Max Unit
V_CCIO = 3.0 V ± 5% (3)
— 25
—
kΩ
Value of I/O pin pull-up resistor
R_PU
before and during user mode, if the
pull-up resistor option is enabled
V_CCIO = 2.5 V ± 5% (3)
V_CCIO = 1.8 V ± 5% (3)
V_CCIO = 1.5 V ± 5% (3)
— 25
—
kΩ
— 25
—
kΩ
— 25
—
kΩ
V_CCIO = 1.2 V ± 5% (3)
— 25
—
kΩ
Notes to Table 1–11:
(1) Pending silicon characterization.
(2) All I/O pins have an option to enable weak pull-up except test and JTAG pins.
(3) Pin pull-up resistance values may be lower if an external source drives the pin higher than V_CCIO.
I/O Standard Specifications
Table 1–12 through Table 1–17 list input voltage sensitivities (V_IH and V_IL), output
voltage (V_OH and V_OL), and current drive characteristics (I_OH and I_OL) for all I/O
standards supported by HardCopy III devices. Refer to Table 1–33 on page 1–21 for an
explanation of terms used in Table 1–12 through Table 1–17. V_OL and V_OH values are
valid at the corresponding I_OL and I_OH, respectively.
Table 1–12. Single-Ended I/O Standards Specifications — Preliminary
VCCIO (V)
VIL (V)
VIH (V)
I/O Standard Min Typ Max Min Max Min Max
3.0-V LVTTL 2.85
3
3.15 –0.3 0.8
1.7
3.6
3.0-V
LVCMOS
2.85
3
3.15 –0.3 0.8
1.7
3.6
2.375 2.5 2.625 –0.3 0.7
1.7
3.6
2.5V LVTTL/
LVCMOS
2.5 2.625 –0.3 0.7
1.7
3.6
2.5 2.625 –0.3 0.7
1.7
3.6
1.8V LVTTL/ 1.71
1.8
1.89 –0.3 0.35 × 0.65 × V + CCIO
LVCMOS
VC CIO
V_{CC IO}
0.3
1.5 V LVTTL/ 1.425 1.5 1.575 –0.3 0.35 × 0.65 × V + _CCIO
LVCMOS
V_{C CIO}
V_{CC IO}
0.3
1.2V LVTTL/ 1.14
1.2
1.26 –0.3 0.35 × 0.65 × V + _CCIO
LVCMOS
V_{C CIO}
V_{CC IO}
0.3
3.0-V PCI
2.85
3
3.15 — 0.3 × 0.5 × 3.6
VC CIO
V_{CC IO}
3.0-V PCI-X 2.85
3
3.15 — 0.35 × 0.5 × —
V_{C CIO}
V_{CC IO}
VOL (V)
Max
0.4
0.2
0.2
0.4
0.7
0.45
0.25 ×
V_{C CIO}
0.25 ×
V_{C CIO}
0.1 ×
V_{C CIO}
0.1 ×
V_{C CIO}
VOH (V)
Min
2.4
V – _CCIO
0.2
2.1
2
1.7
V – CCIO
0.45
0.75 ×
V_{CC IO}
0.75 ×
V_{CC IO}
0.9 ×
V_{CC IO}
0.9 ×
V_{CC IO}
I_OL (mA)
2
0.1
0.1
1
2
2
2
2
1.5
1.5
IOH (mA)
–2
–0.1
–0.1
–1
–2
–2
–2
–2
–0.5
–0.5
HardCopy III Device Handbook, Volume 3
© December 2008 Altera Corporation