HC4GX15 Datasheet, PDF (638/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 1: DC and Switching Characteristics of HardCopy IV Devices
1–8
Electrical Characteristics
Pin Capacitance
Table 1–11 shows the HardCopy IV device family pin capacitance.
Table 1–11. HardCopy IV Device Capacitance—Preliminary (Note 1)
Symbol
Description
Typical
Unit
C_IOTB Input capacitance on top/bottom I/O pins
TBD
pF
C_IOLR Input capacitance on left/right I/O pins
TBD
pF
C_CLKTB Input capacitance on top/bottom dedicated clock input pins
TBD
pF
C_CLKLR Input capacitance on left/right dedicated clock input pins
TBD
pF
C_{O UTFB}
Input capacitance on dual-purpose clock output/feedback
pins
TBD
pF
C_CLK1
C_CLK3
C_CLK8
C_CLK10
Input capacitance for dedicated clock input pins
TBD
pF
Note to Table 1–11:
(1) Pending silicon characterization.
Hot Socketing
Table 1–12 defines the hot socketing specification for HardCopy IV devices.
Table 1–12. HardCopy IV Hot Socketing Specifications—Preliminary (Note 1)
Symbol
Description
Maximum
I_{IIOP IN(DC)}
I_{I O PIN (A C)}
DC current per I/O pin
AC current per I/O pin
300 μA
8 mA for t_RISE > 10 ns
Note to Table 1–12:
(1) Pending silicon characterization.
Internal Weak Pull-Up Resistor
Table 1–13 lists the weak pull-up resistor values for HardCopy IV devices.
Table 1–13. HardCopy IV Internal Weak Pull-Up Resistor—Preliminary (Note 1), (2)
Symbol
Parameter
Conditions
Min Typ Max Unit
The value of I/O pin pull-up resistor
R_PU before and during user mode, if the
pull-up resistor option is enabled.
Notes to Table 1–13:
V_CCIO = 3.0 V ± 5% (3)
V_CCIO = 2.5 V ± 5% (3)
V_CCIO = 1.8 V ± 5% (3)
V_CCIO = 1.5 V ± 5% (3)
V_CCIO = 1.2 V ± 5% (3)
— 25
—
kΩ
— 25
—
kΩ
— 25
—
kΩ
— 25
—
kΩ
— 25
—
kΩ
(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.
© June 2009 Altera Corporation
HardCopy IV Device Handbook Volume 4