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EP4CGX75CF23I7N Datasheet, PDF (7/42 Pages) Altera Corporation – Cyclone IV Device Datasheet | |||
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Chapter 1: Cyclone IV Device Datasheet
1â7
Operating Conditions
DC Characteristics
This section lists the I/O leakage current, pin capacitance, on-chip termination (OCT)
tolerance, and bus hold specifications for Cyclone IV devices.
Supply Current
The device supply current requirement is the minimum current drawn from the
power supply pins that can be used as a reference for power size planning. Use the
Excel-based early power estimator (EPE) to get the supply current estimates for your
design because these currents vary greatly with the resources used. Table 1â6 lists the
I/O pin leakage current for Cyclone IV devices.
Table 1â6. I/O Pin Leakage Current for Cyclone IV Devices (1), (2)
Symbol
Parameter
Conditions
Device
Min
Typ Max Unit
II
Input pin leakage current VI = 0 V to VCCIOMAX
â
IOZ
Tristated I/O pin leakage
current
VO = 0 V to VCCIOMAX
â
â10
â
10 ïA
â10
â
10 ïA
Notes to Table 1â6:
(1) This value is specified for normal device operation. The value varies during device power-up. This applies for all VCCIO settings (3.3, 3.0, 2.5,
1.8, 1.5, and 1.2 V).
(2) The 10 ïA I/O leakage current limit is applicable when the internal clamping diode is off. A higher current can be observed when the diode is on.
Bus Hold
The bus hold retains the last valid logic state after the source driving it either enters
the high impedance state or is removed. Each I/O pin has an option to enable bus
hold in user mode. Bus hold is always disabled in configuration mode.
Table 1â7 lists bus hold specifications for Cyclone IV devices.
Table 1â7. Bus Hold Parameter for Cyclone IV Devices (Part 1 of 2) (1)
VCCIO (V)
Parameter Condition
1.2
1.5
1.8
2.5
3.0
3.3
Unit
Bus hold
low,
sustaining
current
Bus hold
high,
sustaining
current
Bus hold
low,
overdrive
current
Bus hold
high,
overdrive
current
VIN > VIL
(maximum)
Min Max Min Max Min Max Min Max Min Max Min Max
8 â 12 â 30 â 50 â 70 â 70 â ïA
VIN < VIL
(minimum)
â8 â â12 â â30 â â50 â â70 â â70 â ïA
0 V < VIN < VCCIO â 125 â 175 â 200 â 300 â 500 â 500 ïA
0 V < VIN < VCCIO â â125 â â175 â â200 â â300 â â500 â â500 ïA
December 2013 Altera Corporation
Cyclone IV Device Handbook,
Volume 3
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